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MARCH 2013 Issue: 47www.tRAdeMAx.Co.zA sA R36 eACH InCl. / R360 peR AnnuM InCl.
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MARCH 2013 Issue: 47
MARCH 2013
EDITOR’S COMMENT ........................................................................................................ 2
fASTENERS .........................................................................................................................4-9
COvER STORy ............................................................................................................. 10-12
INSulATION ................................................................................................................ 14-19
INSulATION ...................................................................................................................... 20
HEIgHT SAfETy .......................................................................................................... 22-25
NEwS .............................................................................................................................. 26-28
wATERpROOfINg ........................................................................................................... 30
wATERpROOfINg ..................................................................................................... 32-33
STEEl ............................................................................................................................... 34-35
NEwS .............................................................................................................................. 36-39
NEwS .............................................................................................................................. 40-41
NEwS .............................................................................................................................. 42-43
fIRE SAfETy .................................................................................................................. 44-45
fIRE SAfETy ........................................................................................................................ 46
SOlAR ................................................................................................................................... 48
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trademax publications
SA Roofing
tel: 0861 sA RooF tel: 0861 727 663 Cell: 082 266 6976Fax: 0866 991 346www.trademax.co.za
p.o. Box 37053Chempet, 7442 puBlIsHeR: Billy perrin
0861 727 663
edItoR: Jennifer Rees
0861 727 663
edItoRIAl AssIstAnt: Alex Struck
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AdveRtIsIng: Billy perrin
0861 727 663
082 266 6976
Jacqui Marsh
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Bradley williams
0861 727 663
lAyout & desIgn: Craig patterson
suBsCRIptIons & dAtA:Celeste perrin
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dIsClAIMeRThe views expressed herein are not necessarily those of Trademax Publications. Although we have done our best to ensure the accuracy of our content, neither Trademax Publications nor SA Roofing magazine will be held liable for any views expressed or information disseminated in
this issue.
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ts onwards and upwards
we are proud to announce the launch of our very first annual publication dedicated entirely to the topic of roofing and insulation in South Africa. This
Directory will be published mid-2013 and aims to streamline the delivery of vital trade and regulatory information to our readers, keeping them up to date on topics and issues that have direct bearing on the success of these critical sectors of the construction industry.
Showcasing both inner and outer roofing systems for the residential, commercial, industrial and agricultural roofing and re-roofing industries, the SA Roofing & Insulation Directory 2013/2014, a superb companion to our regular instalments of the SA Roofing magazine, places strong emphasis on the production and supply of top quality products and services, laws and legislation, energy efficiency, as well as trends and developments in the roofing and insulation sectors.
We are also pleased to announce that the SA Roofing magazine is a media partner for the TotallyConcrete Expo taking place from the 4th to the 5th of June this year.
with that, I leave you to enjoy our latest issue and invite you to send us any feedback or suggestions at your leisure.
Jen
Welcome to another issue of the SA Roofing magazine, where we bring to you interesting industry insight, profiles on quality products and services in the industry, information about height safety and some great information
on expanded polystyrene.
MARCH 20132
FOR YOUR NEAREST STORE CALL OUR CALL CENTRE
or visit us at www.builders.co.za0860 builders/0860 284 533
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• Free roof truss quotations
• Professional advice and friendly service
• Supplier of all roof coverings at competitive prices
• Member of the ITC (Institute for Timber Construction)
• ITC certificate offered with all quotes
(Roof inspection A19 certificate)
• Precision truss manufacturing
• Installation of trusses and coverings
• 5-7 day turn-around from order to delivery* * (order means that money has been deposited and reflects in the Builders account)
At our Builders truss division we offer the following services:
We design & manufacture all precision roof trusses
“you travelled all the way from Singapore to Kenya to sell screws?” A statement made by the guest-of-Honour at Build Expo Kenya several years ago and one which I will never forget. Most people I meet think the same way. All that work for this tiny item? 15 years in the industry and traveling from country to country all to achieve one thing: Education.
In the steel roofing industry, there has been a shift in demand from ppgI (pre-painted galvanised Steel) Sheets to AZ (Aluminium-Zinc Alloy Coated) Sheets – mainly because of cost versus performance reasons, but more importantly, AZ coil producers have been doing a tremendous job educating the market. Today, demand for AZ Sheets outstrips its supply as customers become better informed. unfortunately, this is not the case for fasteners. Two main problems plague the fastener market:
1. fasteners (i.e. screws, bolts, nuts, etc.) constitute an insignificant percentage of the value of the entire project. As such, it is one building component that is commonly overlooked by contractors, owners, architects and consultants. Though conveniently forgotten, fasteners play a critical role in securing our building systems together. If you think about it, building failures like loose fitments, leakages or corrosion, are all results of fastener failure.
where owners, architects or consultants do not govern, builders maximise their profit. Where architects, consultants and builders do not recommend, owners minimise their cost. Either way it does not benefit anyone.
2. fasteners were used as early as 400BC when threads were invented for use in presses to extract oils from olives and juice from grapes. The function of the invention is the same today. But with modern manufacturing technology and engineering, fastener designs have evolved drastically. Sadly, customers only stick to fasteners that they know about and are available at their local hardware retail shops. It does not help that many are also unwilling to venture out of their comfort zone to try new designs.
At EESg (Engineering Edge, Singapore), we believe in engineering innovation that does not come at an unreasonably high cost to our customers. A screw is after all a screw and customers are used to the fact that they are supposed to cost the same as peanuts. fasteners should be designed to be affordable, yet they should work easily and improve the overall application performance. fasteners should make the building system problem free, if not stronger. Creating an Edge - that’s how we frame it.
Fastening Innovations and Solutions for Aluminium-zinc Alloy Coated sheets
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Many are not aware of the dangers of using the wrong grade of fasteners. We provide you with
fastener selection tips and introduce new fastening innovations that are now available in South Africa.
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AFFoRdABle InnovAtIons
CORROSHIElD® fasteners are available from CSSA (CORROSHIElD® South Africa) distributed from depots in Cape Town and gauteng. CORROSHIElD® fasteners are equipped with some of our unique innovations, such as lEvIN®. lEvIN® is a special in-house drill point design that improves effectiveness of drill penetration of our fasteners into steel by up to 30%.
The concept behind lEvIN® is to increase the blade cutting area and reduce the manual load requirements to provide an easier-to-use, faster-to-install experience. These design improvements not only bring benefits to the users, but also owners. with an easier-to-use fastener, owners can expect improvements in the workmanship of their contractors.
On top of lEvIN®, in 2013 we will also be launching two new products to the South African building industry: DuOTApp® and TIMTApp® S17.
duotApp®
Every roof and façade company in South Africa uses two main types of fasteners. One for steel purlins, another for timber purlins. permutate the two different designs with various diameters and lengths, you can imagine the inventory headache and selection dilemma.
Enter DuOTApp®: one drill point, two applications (Timber and Steel). Builders can now simplify their inventory by embracing one design of fastener to cater to their daily roof and façade installation needs.
DuOTApp® has been designed with a unique drill point that is able to handle soft or hard timber, as well as steel substrates up to 3mm thick. No special equipment or skills will be needed for installation using DuOTApp®. Besides reducing inventory, with a smaller range of fasteners to select from, application errors will also be reduced.
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DUOTAPP® -1 Drill point, 2 applications.
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tIMtApp® s17
How many times have we put in a fastener for timber application only to end up splitting that timber purlin under the sheets? worse, no one replaces that split purlin simply because it’s too much work. when the sheets go over, no one sees it, we are all home free… at the expense of the owners.
Introducing TIMTAPP® S17. Same old timber fixing fasteners, but with a more effective drill point design. TIMTApp® S17 does not cause your timber purlin to split during application. And you can even install it as close as 10mm to the timber’s edge without problems. we designed our TIMTApp® S17 based on customers’ feedback that the generic Type 17 timber fasteners did not perform up to their expectation. By splitting the timber purlin, this severely compromises the fasteners’ capability to hold down the substrates.
CoRRosIon pRoteCtIon
Almost every fastener importer in South Africa seems to either promise eternal anti-corrosion performance or they adopt the ‘talk about it but let’s not go into details’ approach. The science behind protecting steel from corrosion is rocket science to me. There are probably more than 50 different ways of carrying out steel surface treatment with more than 1,000 designs of equipment and a further 3,000 different types of chemicals to choose from. Steel surface treatment could have been a faculty on its own in our local universities; in reality it’s not available. It is common for innocent customers to play the role of guinea pigs for these importers to test batches of trial orders from their many internet suppliers. And in an attempt to discover which supplier has the most ‘stable’ (stable = no or least complaints or rejects) product, both importers and users end up having to carry out trials at their own expense.
So here’s to satisfying the ‘stability’ quality control aspect. CORROSHIElD® fasteners are used not only in the building and construction industry, they are also used by the oil and gas industry in the harsh offshore marine oil rig environment. CORROSHIElD® fasteners are also exported daily to 26 different countries around the world. But we didn’t think that by satisfying the ‘stability’ aspect it was enough for ourselves, so this is how we have done it.
All CS and HD coated CORROSHIElD® fasteners are guaranteed by EESg, the manufacturer, to perform a minimum number of years before corrosion affects the structural quality of our fasteners. And to confirm what our QC labs have concluded in their tests, we tie up with internationally accredited third party test labs to confirm those results. Reports are available upon request.
CORROSHIElD® fasteners with CS and HD coating are coated with multiple layers. Each layer is designed and concocted by a team of manufacturing and chemical experts. The base coat comprises mainly of zinc. Zinc has been used for its sacrificial protection of steel for centuries. However, the generic zinc coating used on the general hardware fasteners is inferior when it comes to corrosion protection. generic zinc coating is electroplated and is highly porous. And, for manufacturers, there is always the challenge of balancing between zinc thickness and embrittlement issues. Our zinc base coat has gone through drastic modifications in its density and steel surface immersion. This was done by toggling with the zinc’s molecular structure. As such, with just our zinc base coat, it would outlast the generic zinc coating by 4 to 6 times in a Salt Spray Test Chamber.
However, a single zinc layer is insufficient to meet the anti-corrosion performance requirements of the AZ coil producers. we needed the fasteners to complement the AZ coils in terms of lifespan. from the wide selection of coating materials, we had to make sure that our material choice had minimum galvanic reaction, yet best contamination prevention capabilities. Our top coat comprises mainly of Aluminium. A lot of attention was focused on achieving the desired density and porosity so that the top coat becomes truly a single solid phase microstructure. On top of that, extensive tests and research were carried out to identify performance of the coating’s adhesion to the multiple layers. Applying a coating on to a fastener isn’t as simple as painting the walls in your house. Coating’s adhesion performance determines how scratch-resistant the coating would be when used with the often worn out and overused sockets. So, while the base coat gives that last line of defence, the top coating plays an important role of not only preventing contaminants from penetrating, but also resisting abrasion.
Customers find it challenging to find fasteners from a reliable source. Hence, most simply opt for one that is most conveniently available at the lowest cost. Here are some tips to help you find your right source:
S 17.Type 17.
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The general importers of fasteners do not have the backing and support of a reputable fastener manufacturer. Reputable fastener manufacturer refers to one with extensive global market spread, a good manufacturing history and strong frontline technical support. The fastener industry is made up mainly of fully fledged manufacturers, sub-contract manufacturers and wholesale traders. Other than the fully fledged manufacturers, the rest have incomplete or no manufacturing or QC facilities at all. As such, general importers are forced to create their own marketing materials, using their own branding and technical materials from their own experience or the internet as a cover to make their products more presentable. However, their marketing materials are usually restricted to brochures and leaflets only. The packaging is also rarely customised with tracking labels or clear and detailed product identification. They also often have no idea of the manufacturer’s manufacturing process, quality control plan, coating details, warranty and even presence. Many have never even met their manufacturer before. And, if you can identify differences in the different batches of products supplied, then they probably internet shopped and are carrying out trials. without the backing of a reputable fastener manufacturer, general importers will also not be able to produce third party test reports or manufacturer’s warranty for the products they sell.
On the other hand, a reputable fastener manufacturer is usually in the market to stay for good. As such, they usually have a more structured approach to how their distribution channels are organised. Marketing materials and packaging designs of their distribution channel are usually in sync with the manufacturer’s. And their marketing options are a lot more varied – wide, yet complete. Their distribution channels will also be competent enough to provide customers with details to manufacturing processes, technologies, expert technical advice, site assessments and reports, independent test reports and factory warranty. It is also common for such companies to have a more prominent presence in the country. presence is usually in the form of seminars, road shows, articles, presentations, technical bulletins, etc.
with the amount of work the company is doing to objectively educate the market, one can clearly separate them by the substance of the content they are transmitting. we by far exceed the current hardware retail standard.
Even after reading this article, many will probably continue to procure fasteners based on convenience and costs. But as AZ coil producers and fastener manufacturers continue their efforts to educate the market, we see light at the end of the tunnel. Even the South African Bureau of Standards has created SANS 1273 (SABS 1273, Edition 2 of 2009) to provide the building industry with quality governance guidelines for fasteners.
Select wisely from the very limited range available in South Africa, and you won’t have to re-visit that site for rectification works. The next time someone asks me the same question again, my answer would be: “Because your building is not screwed together properly.”
ContACt detAIls.
tel: 086 126 2866 Fax: 086 610 5441 Mobile: 27 82 852 3424email: [email protected] [email protected]: www.corroshield.co.za
16 van Tonder Avenue, Malanshof, Randburg, gauteng, 2194.
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MARCH 2013 9
government has completed 3.2 million government-subsidised housing units since 1994. The National planning Commission’s new spatial development plan,
launched last August, encourages the creation of more compact cities to help reduce travel time and costs between home and work. South Africa’s housing backlog currently stands at 2.1 million.
Steelworld, which is twenty years old, is a subsidiary of Duraworld Enterprises group and has steadily increased market share in South Africa’s bulk housing market over the years.
The company is a manufacturer and supplier of steel roofing sheets, lightweight steel trusses and related products to the low-cost housing and construction industries in South Africa, with an extension into lesotho, Kenya, Zimbabwe, Nigeria, Botswana, India and Mozambique.
Since 2009 Steelworld has delivered 63 bulk housing projects for government in all nine provinces. The company’s manufacturing operations are located in van der Bijl park, the hub from which all projects around the country are rolled out.
• In 2009, we supplied 6 000 roofing systems, a total of eight projects, in gauteng and limpopo.
• In 2010, we completed 8 000 houses, a total of 10 projects, in limpopo, gauteng and the Eastern Cape.
• In 2011, we completed 12 000 houses, a total of 20 projects, in gauteng, limpopo, Mpumalanga and the Eastern Cape.
• last year we completed 15 000 houses, a total of 25 projects, in gauteng, Mpumalanga, limpopo, free State and the Eastern Cape.
loCAl pResenCe
Steelworld has grown a strong presence in the current development of the low-cost housing sector with quality and innovation as the focal point in its relationships with contractors on projects.
venish Dewrajh, the business development and operations manager at Steelworld, says, “We are firm believers in the value of partnerships. for example, we work closely with architects to improve on our methodology and go-to-market product offering. Our contractors actively engage with the communities in which they operate.”
“we strive to improve the current forms of materials to provide better delivery in terms of aesthetics, cost efficiency and overall engineering quality and specifications, to increase advantages of the delivery on the ground.”
The Growth Story
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The study was completed on Kanana Park Sweetwaters services in line with Emmendo designs.
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pRoduCt poRtFolIo
Through the development of the Dura v Tile and lightweight steel trussing, Steelworld’s architectural engineers design software aids in improved utilization for basic forms of sheeting, i.e. bull nose services for projects, better product variation, coated sheeting and wide spans, etc.
The company places a strong emphasis on providing the market with innovation, focusing on improved aesthetics of our universally used roofing systems. The lightweight, extensively enduring steel truss systems and range of roof sheets create the platform for cost saving and a creative vantage point for the housing industry.
with Dura Truss technology and Dura Truss building products, Steelworld turns architectural inspiration into commercial reality much faster and more cost-effectively than ever before, improving labour delivery times in a ratio of 5:1 compared to the traditional roofing systems. Dura Truss is an advanced end-to-end steel frame design and manufacturing system, allowing the company to mass produce cold formed steel frames with precision and accuracy that is determined by the system, not the skill level of factory workers or on-site assemblers.
loCAl pRojeCts
One of Steelworld’s most prominent projects is Kanana park, which is situated near the grasmere Toll plaza, gauteng.
To date, a thousand houses have been rolled out in phase One and president Jacob Zuma handed over 200 homes to the elderly in Kanana park, Sweetwaters and Thulamntwana in August last year.
At Kanana Park, Steelworld aligned to the specifications required by the Kanana park presidency Monitoring Committee project. Steelworld supplied Dura Truss, Dura v Tile and Dura Barge products, resulting in improved aesthetics from the conventional IBR or Corrugated Sheeting profiles to the new Dura v Tile.
The lightweight truss sections were especially designed to the suit the needs of the housing units. This gave the project individuality and precision. Dura Barge complemented the completion to create the overall look and feel of the units.
In Mpumalanga, Steelworld is currently supplying a formation of quality lightweight steel trusses and the Dura v Tile.
CAse study KAnAnA pARK
Steelworld’s recent sponsorship at the low Cost Housing Africa Conference allowed the company an opportunity to evaluate the status quo surrounding traditional products and the need to build innovation into the go-to-market proposition.
A key topic at the conference for most participants was the important area of skills injection into the industry. Steelworld supports national initiatives to bring in more engineers, artisans and other vocations into the fold.
On the subject of partnerships, an internal study on supplier contractor partnerships revealed the following about key metrics:
• Design • Cost-efficiency• Skills development
• Improved design formats for product delivery that boosts cost savings and caters for the needs of disabled people with improved aesthetics and environmental considerations for the future, especially in low-cost housing delivery.
• The direct involvement of supplier manufacturers has improved. Through collaboration, go-to-market products are more innovative, thanks to technological engineering skills and programs. ultimately, this is good for the needs for the bulk housing sector.
• Supplier involvement through the line includes the need to
up-skill professionals and technicians. This needs to be a constant and should be tested against education standards in the profession.
• Direct involvement of suppliers should be considered from the design stage. This will impact product specifications improvements, cost cutting and make for a more productive labour force.
Steelworld is currently busy with projects across South Africa, proactively engaging with and impacting on the basic requirements and up-skilling of contractors to deliver in a more efficient and cost-effective manner, beneficial to contractor staff and locals.
At Steelworld, our business philosophy is to manufacture innovative and quality of products with lifelong warranties, for seamless service delivery, not only to contractors but also to end-users.
we continue to foster meaningful relationships across all levels of the bulk housing industry.
031 940 [email protected] www.duraworld.co.za
Steelworld is a division of Duraworld Enterprises.
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IntRoduCtIon
The objective of this project was to analyse the performance of a residence with three Expanded polystyrene (EpS) products/systems installed in comparison with a conventional unimproved design of the same residence.
The energy usage of the base-case building, with all applications typical of a residential building were developed using the visuaIDOE® software. These were compared with the usage of the building with the three EpS products/systems improvement. The comparative costs of the base case and EpS products/systems were provided by industry and were used to develop life Cycle Cost comparisons. Internal temperature improvements resulting from the three EPS systems were demonstrated using the NewQuick® or Building Toolbox® software. This analysis also provided the ‘percentage persons comfortable index’ (ppC).
A comparison was drawn between the base case model (which was developed in detail), and the improved base-case model which was modified with the three EPS products/systems. The base-case residential design and a description of the improved system are detailed in Annexure A.
The effective thermal performance of the 195mm EpS ‘rib and block’ suspended floor slab system (255mm overall slab depth) was calculated using the ASHRAE Zone Method. This method uses a series-parallel calculation around a conductive zone in order to account for transverse heat flows though insulation systems with highly conductive intrusions.
Transverse heat flows do tend to be under-estimated by conventional calculation. A conventional simplified Fourier's law method was applied for calculating the thermal transmittance of the 40mm thick EpS insulated cavity walling system. IS013370: Thermal performance in buildings - heat transfer via the ground - calculation methods were applied for calculating the thermal transmission of the insulated slab (11JfS) on ground applications for input to the energy model below.
A visuaIDOE® based computer modelling of the base-case, and three EpS systems, was performed. This built up the impacts of all building energy uses and accounts for their inter-relationship. for example, much of lighting energy ends up as heat and impacts on heating or cooling loads in buildings. The occupants of a building influence energy usage with their metabolic activity. usage of appliances was also taken into consideration. The model was run for Johannesburg only.
Energy usage and thermal analysis of a 400m² upmarket residence situated
in Johannesburg, South Africa
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Article provided by the Expanded Polystyrene Association of South Africa (EPSASA).
The energy cost and capital cost impact of each system was developed. This data was used in a life Cycle Cost (lCC) calculation. lCC method is accepted for energy cost evaluations as it provides a long term view which brings into account projected energy costs rather than short term costs.
The energy cost escalation used in this report was 2.5% over the rate of inflation over 30 years. A discount rate of 7.0% was used. predicted temperatures within the buildings and the ppC for the hottest hour, were obtained for comparison between the base-case and the improved system. These and the internal air & radiant temperatures were obtained via a NewQuick® model.
BAse-CAse Model developMent
Buildings of different occupancies have widely differing energy usage patterns and the influence of energy saving systems varies greatly for climatic regions. Building size, orientation, lay-out and material designs and equipment choices also influence energy usage.
In order to demonstrate the heating and cooling energy usage reductions resulting from the incorporation of the EpS improvements a 400m² modern flat roofed residential design with typically large window areas, based in a highveld climate region (using Johannesburg weather data), was proposed as the base case for the visualDOE model.
It was assumed that heating was via under-floor electrical resistive heating and that cooling was via low efficiency split units.
Other energy appliance load intensity assumptions are detailed in the building description of Annexure A.
Results
tHeRMAl tRAnsMIttAnCe oF systeMs
The Effective Thermal Transmittance of the EpS ‘rib and block’ suspended floor slab system (255mm overall slab depth) was calculated using the ASHRAE Zone method. A result of 0.48w/m2K was reported.
This result was six times the thermal resistance of the standard 255mm concrete slab which has a thermal transmittance of 3.2 w/m2K. The Thermal Transmittance of the EpS walling system with 40mm of expanded polystyrene within a double brick wall cavity was calculated using the simplified Fourier's law. A result of 0.72 w/m2K was achieved versus 2.63 w/m2K for the un-insulated wall.
The Thermal Transmittance of the EPS flooring system with 40mm of expanded polystyrene (within a double brick wall cavity) was calculated using the simplified Fourier's Law. A result of 0.63 w/m2K was achieved versus 2.04 w/m2K for the un-insulated floor.
eneRgy usAge And HeAtIng And CoolIng loAd ReduCtIon
the visualdoe model results are set out below: The calculations included the base case unimproved building, the improved building with all proposed EpS systems incorporated and then three models which unload each of the three systems individually in order to assess the thermal efficiency of each product/system on its own. The final model in the series showed the performance of a building with IBR steel roof and plasterboard ceiling.
The sections of the VisualDOE report cover: 1. electrical usage by major application 2. energy cost - impact on life Cycle Cost 3. energy usage by month (showing seasonality) 4. monthly electrical power demand
eFFeCt on AIR teMpeRAtuRes In An unoCCupIed House
The Building Toolbox/NewQuick software showed a decrease of maximum temperature of 7.1 ºC versus a concrete slab, and 11.0 ºC versus an IBR (Steel) roof and ceiling, compared to the combined three systems in place in an improved building. The increase in minimum temperature was of the same order. with an unimproved slab or with an IBR roof and ceiling the ppC was 0%. The ppC was 100% for the improved building at the hottest hour.
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eleCtRICAl use suMMARy
AlteRnAtIve lIgHts eQuIpMent HeAtIng CoolIng FAns Hot wAteR ext. lIgHts totAl
eleCtRICAl end-use totAls (kwh)
Modern or un-shaded Tuscan 22,349 7,450 17,107 7,680 13,745 14,804 394 83,529
Modern Tuscan EpS Roof, EpS floor & walls 22,349 7,450 4,036 9,059 12,883 14,804 394 70,975
Modern Tuscan EpS roof, EpS floor only 22,349 7,450 9,484 7,579 13,140 14,804 394 75,200
Modern Tuscan EpS roof, EpS walls only 22,349 7,450 12,646 7,922 12,975 14,804 394 78,540
Modern Tuscan EPS floor & walls 22,349 7,450 9,224 9,219 13,859 14,804 394 77,299
Modern un-shaded flat IBR roof & ceiling 22,349 7,450 21,129 9,153 16,220 14,804 394 91,499
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ConClusIon
The reduction in energy usage as result of the combined EpS product/systems was 31.4 kwh/m2 per annum. This is the expected reduction in combined heating and cooling energy load over a year expressed per unit area of the building. The reduction was attributed to the additional EpS insulation. The individual effect of each measure was: wall Insulation 10.6 kwh/m².a
floor Insulation 18.9 kwh/rn².a Roof Insulation 15.8 kwh/m².a
when considered that the proposed SANS 204 part 2 Deemed-to-satisfy requirement for energy usage in residential building in Johannesburg may be as low as 126 kwh/rn².a, it is evident that this represents a major area in which energy usage reduction can be achieved.
The reduction of peak electrical demand is over 40% for the cold winter months in Johannesburg. The reduction in heating demand can in some instances be complete. If windows are north facing and the building is not too deep, and if south facing windows are significantly reduced, then the heating can be eliminated completely even for a temperate climate such as Johannesburg, but certainly in total for milder climates such as for pretoria and Cape Town.
The annual energy usage reduction with all EpS measures applied was just under 33% of those impacts which can be influenced by the shell of the building, for the region. In relation to a base-case of a building with an un-insulated ceiling and IBR (Mild steel) roof the reduction is 44%.
Acknowledgement: All calculations provided by Structatherm Projects
MontHly eleCtRICAl usAge – (kwh)
AlteRnAtIve jAn FeB MAR ApR MAy june july Aug sept oCt nov deC
Modern or un-shaded Tuscan
6,736 5,776 5,941 5,775 7,280 9,795 9,763 7,785 6,198 5,934 6,091 6,453
Modern Tuscan EpS Roof, EPS floor & walls
6,656 5,766 6,403 5,280 5,443 6,066 6,146 5,813 5,543 5,807 5,909 6,470
Modern Tuscan EpS roof, EPS floor only
6,581 5,647 5,874 5,378 6,142 7,579 7,609 6,590 5,747 5,808 5,882 6,362
Modern Tuscan EpS roof, EpS walls only
6,670 5,732 5,897 5,415 6,556 8,693 8,678 7.021 5,796 5,763 5,923 6,395
Modern Tuscan EpS floor & walls
6,917 5,960 6,149 5,445 6,179 7,736 7,772 6,617 5,822 5,955 6,091 6,654
Modern un-shaded flat IBR roof & ceiling
7,113 6,169 6,543 6,656 8,150 10,267 10,315 8,759 7,109 6,805 6,698 6,916
MontHly eleCtRICAl usAge – (kwh)
AlteRnAtIve jAn FeB MAR ApR MAy june july Aug sept oCt nov deC
Modern or un-shaded Tuscan 19 18 17 21 27 32 32 28 28 17 18 18
Modern Tuscan
EPS roof, floor & walls 17 16 16 15 15 19 19 18 15 15 17 16
Modern Tuscan
EPS roof & floor 18 17 16 17 21 24 25 22 20 16 17 17
Modern Tuscan
EPS roof & walls 19 18 17 18 23 28 28 24 21 16 17 17
Modern Tuscan
EPS floor & walls 19 18 17 16 21 25 26 22 19 17 17 18
Modem un-shaded flat IBR roof & ceiling 18 17 16 24 30 36 35 30 28 19 20 16
Owens Corning’s High Performance Shingle Roofing System
Product attributes:
• Bold colours
• More contrast
• Enhanced protection
• Aesthetic appeal
• Security benefits
• • Lightweight (22kg per m2)
• Versatility in design
• Ease of erection
• High wind resistance
• UL A1 fire rating
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AnnexuRe A
The 400 m2 residence was assumed to be naturally ventilated and heated and cooled to comfort. However, in order to model the building using modern building simulation techniques and software it was necessary to assume that fan-powered fresh air was introduced, in this case, at the rate of 1.3 air-changes per hour. wall height was assumed to be 2.92m on average with internal ceilings at 2.40m. The roof was minimally sloped and of reinforced concrete design.
Fenestration: Glazing was assumed to be clear 3mm float glass, single pane windows in aluminium frames having a shading coefficient of 1.0 and Solar Heat Gain Coefficient of 0.86. There was minimal shading of windows in the design. window areas were assumed to be slightly in excess of 20% of floor area.
walls: The walls were assumed to be constructed of 100mm common bricks with the construction detail shown in Table 1. As shown, construction details in the improved building assumed 40mm of expanded polystyrene in a wall cavity. This level of insulation corresponds with the present SANS 204 part 2 deemed-to-satisfy levels. Roof Construction: Roof construction was assumed to be a concrete roof with screed to falls and built-up waterproofing, coloured to achieve an absorption co-efficient of 0.7.
The improved building had an EpS 255 insulated and reinforced concrete rib and block roof system. Both cases had a decorative 9.6mm plasterboard ceiling installed on timber battens under slab.
Floor insulation: The base case floor slab was not insulated. As the building was heated via under-floor heating the slab was insulated with 40mm of high density EpS. The foundation of the building was also protected to a minimum depth of 300mm with 40mm of Expanded polystyrene thermal insulation for the improved case.
table 1 - wall Construction detail (Base case) • 100 mm face brick • 100 mm common brick • 10 mm cement/sand plaster (R-value = 0.38 m²K/w)
Improved building • 100 mm face brick • 40 mm Expanded polystyrene • 100 mm common brick • 10 mm cement/sand plaster (R-value = 1.38 m²K/w)
Table 2 - Roof Construction Detail (Base case) • Waterproofing • Screed to falls • 255 mm high density reinforced concrete slab • 9.6 mm plasterboard ceiling (R-value = 0.55 m²K/w)
Improved building • Waterproofing • Screed to falls • 255 EpS insulated reinforced concrete slab • 9.6 mm plasterboard ceiling (R-value = 2.08 m²K/w
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Building Facades: The window lay-out assumed a standard window dimension 0.91 x 1.68m which was distributed evenly at 10.3m2 to each facade, in all cases.
lighting was designed to an overall power of 15w/m² Exterior Lighting: The Base-case exterior lighting was assumed to have a total connected load of 0.2kw. This was based on four 50w HpS lamps for the building perimeter. The improved case required four 19W compact fluorescent lamps with light sensors.
Appliance & Plug Loads: A value of 5 w/m2 was assumed for the plug load value for both the improved and the Base-case. This covered all appliances and a swimming-pool.
Heating & Cooling Equipment performance, characteristics & sizing: The house was assumed to be served for cooling by a ceiling concealed DX split unit and resistance heating. A COp of 1.0 (EER=3.413) was assumed for the split units. Base-board heating of 2.0kw was provided in each of the ten interior zones.
domestic Hot water: Domestic hot water was provided by electric resistance water heaters. The installed heating capacity was 4kw for each of two 200ℓ geysers.
Air flow rates were calculated by the software. Fresh air requirements were set to 1.3 air changes per hour.
An average occupancy density of 25.0 m²/person was assumed.
operation schedules: An operating schedule appropriate to a residential occupancy was selected. There was no heating or cooling setback temperature, and it was assumed that the plant would be off during unoccupied hours.
set-point temperatures: The set point temperature for heating was 20ºC, and for cooling 27ºC. This was in line with a 7.0ºK range around an annual thermal neutrality of 23.5ºC. The throttling range about this set point was 2.0ºK.
Thus, heating would commence between 21 and 19ºC, and cooling between 26 and 28ºC. The dead-band between the temperatures 21 and 26ºC was within the tolerance of 80% in individuals for naturally ventilated structures. The building would go out to 19 or 28ºC on occasions which would be of short duration. This arrangement would reasonably simulate a naturally ventilated environment.
Article published with permission from the Expanded PolystyreneAssociation of South Africa (EPSASA).
(t) (011) 314-4021/7
One of the insulation products that forms part of their range is lso-lam. It is a tested and registered product that complies with SANS I0400-XA and appears on
the Thermal Insulation Association of South Africa's (TIASA) list of registered products. With a B/Bl/2/l-l&V classification for no flame spread, in both vertical and horizontal applications, it produces great results after application.
According to Melvin Robert, sales manager at lsolite, lso-lam provides a clean surface that is completely washable, contains no glue or toxic gases, and is safe to specify for use in food-processing areas.
Over the past six years, 40mm thick Iso-lam insulation has become the most popular specification for ceilings in the lsolite product range. with an R-value of 1.4 and a unique installation method, Iso-lam is rapidly becoming the preferred ceiling system for all thermal insulation applications. No glue and no toxic gases are used in the production of lso-lam. lsolite has undertaken to recycle all expanded polystyrene waste material and today recycles expanded polystyrene from outside sources.
Iso-lam is a unique ceiling system, developed for ease of installation for everyone from contractors to farmers and do-it-yourself customers.
The Iso-lam ceiling system has an exclusive framework comprising an aluminium T-section and a pvC T-section that comes together to form an H-section. "The aluminium is used as a frame and the PVC as a clip-on finish on the surface," says Melvin Robert.
In over-purlin applications, the aluminium section can be butt-joined at any point along the slope, even between the purlins. "This can be done by making use of the pvC section at the joint," he adds. lso-lam boasts with a unique hold-down clip in suspended ceilings that can be used with all common grid systems.
"It is easy to install and remove, but will firmly hold a 40mm panel in place." Melvin Robert says Iso-lam insulating panels are ideal for insulating roofs, ceilings and walls, whilst providing a permanent maintenance-free internal surface. The panels consist of lsolite fire-retardant EPS sheets laminated on one face with a polyvinyl chloride skin.
ContACt detAIls: (t) 082 447 2847 (e) [email protected] (w) www.isolite.co.za
(t) 082 490 3817 (e) [email protected] (w) www.isowall.co.za
thermal insulation made easy The Isolite Group manufactures and distributes expanded polystyrene (EPS)
products throughout Southern Africa. The group services a wide range of industries, supplying products ranging from insulation sheets to fish boxes and seed trays to
cycle helmets from seven different factory locations.
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The IwH controls two separate structures, namely the Trade Association and the professional Body.
wHo does tHIs AFFeCt?
• All persons involved in working at heights that are exposed to the risk of falling.
• Any person that wears a safety harness at work.• All persons that employ other persons that have to perform
work whilst at height.• All persons that use contractors to carry out work whilst
at height.• All designers of structures that will expose persons to the
risks of working at height.• All builders of such structures.• All clients that have such structures erected on their behalf,
and• Accredited providers that train persons who work at
height.
wHAt does It MeAn FoR IndustRy?
• Regulated and controlled training of all persons exposed to the risks of working at height, strictly in accordance with the requirements of the National Qualifications Framework.
• All persons that are trained in accordance with National Qualifications Framework standards (NQF) can apply for membership of the IwH pB and if found to be competent, such persons will be awarded a professional designation and become registered practitioners of the Institute.
• All such registered practitioners are bound by a code of conduct that is administered by the IwH pB. Any practitioner that is found guilty of a serious breach of this code can have his/her professional designation revoked by the professional body.
• All complaints against unsafe working practices by registered practitioners that are received by the IwH pB will be investigated by its rules committee.
• All accredited training providers are carefully monitored to ensure that the training standard offered meets with the requirements of the NQF and those of the IWH PB.
• peace of mind for clients that make use of the services of such registered practitioners.
Institute for Work at Height receives official recognition by SAQA as Professional Body for the work at height industry in SAThe Institute for Work at Height (IWH) has received official recognition by the South African Qualifications Authority (SAQA) as the Professional Body (PB) for
the work at height industry in South Africa.
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Sustainability and versatility make Marley Roo�ng the homeowner’s choice for
modern roo�ng solutions.
www.marleyroofing.co.za
Dynamically preserving the future.Dynamically preserving the future.
Affordable Roofing Solutions
For over four decades, Marley Roo�ng has been providing high-quality roof tiles and unrivalled service delivery for innovative and sustainable
building solutions.
Each of Marley Roo�ng’s range of tile pro�les is speci�cally developed with the South African customer in mind and backed by a range of
accessories for the full solution.
For every home, there is a Marley roof tile
JHB: +27 11 316 2121 | CT: +27 21 372 1018 | DBN: +27 32 944 4155
Use your smartphone to snap the QR code and visit the Marley Roo�ng website
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How does It AFFeCt tRAInIng pRovIdeRs?
• Any person that wishes to be awarded a professional designation must seek the support of a training provider that is recognised by the IwH pB and that can offer the correct training.
• Any training provider that wishes to offer training that leads to the awarding of a professional designation in the work at height industry should seek recognition from the professional body. All existing training providers are encouraged to contact the professional body to make arrangements for evaluation of their learning materials, trainers and facilities. An assessor and subject matter expert of the IwH pB accompanied by an official from the relevant SETA will arrange a site visit.
• All recognised training providers will be listed on the IwH pB website and will be entitled to display the words “IwH pB Recognised Training provider” on their documentation.
wHAt Is dIFFeRent now tHAt tHe wHpB Is ReCognIsed By sAQA?
• All trained persons under the ‘old’ system were issued with a ‘licence-to-operate’ or ‘lTO’ ID card. From now on all the recipients of NQF based training that are found to be competent and awarded a professional designation will be issued with an ID card and certificate stating that the person is a 'Registered Practitioner.' These persons will be allowed to use that title and place corresponding designatory letters behind their names, i.e.:
IwHpB Reg Mp for a MEwp practitionerIWHPB Reg Mc MEWPS & Transport controllerIwHpB Reg Ed Equipment DemonstratorIwHpB Reg Rt Rope Access Technician (the old level 1)IwHpB Reg Rp Rope Access practitioner (the old level 2)IwHpB Reg Rs Rope Access Supervisor (the old level 3)IwHpB Reg fp fall protection planner
Note that several other professional designations are being finalised for submission to SAQA for registration. This covers inter alia, activities related to Suspended Access Equipment, Scaffolding, ladders, falsework, formwork and Construction Health and Safety.
• All existing lTO holders in good standing with the IwH will be re-assessed in the near future and if found competent will be awarded the new designation.
• All new designations will be valid for 3 years subject to meeting the requirements of the IwH’s professional body CpD policy and provided that such practitioner’s designation has not been revoked (see above).
24
wHAt ABout tHe setAs?
• All relevant Education, Training qualifications assurance (ETQA) functions that resided with the various SETAs have been moved to the Quality Council for Trade and Occupations (QCTO) and SETAs are tasked with Quality Management functions with regard to the work of the ETQA.
• The IWH PB and the Services SETA Quality Management Department (QMD) are co-operating to implement the new dispensation.
• This process between IwH pB and Services SETA which is the primary SETA where most of the qualifications that contain ‘our’ unit standards reside is nearing finalisation. Thereafter the IwH pB will approach various other SETAs such and CETA and TETA and finalise similar arrangements with their respective QMDs.
• All training providers, assessors, moderators and other similar functionaries operating in the work at height sector will still be required to apply to the SETAs for accreditation but such application will require the support of IwH pB.
wHAt HAppens to tHe tRAde AssoCIAtIon Also Known As tHe InstItute FoR woRK At HeIgHt (IwH?)
• The IwH Trade Association remains intact as a voluntary trade association with individual and corporate members. It serves industry and represents the views and needs of industry to government Departments and other decision makers.
• Membership of the association is voluntary and allows members to display the logo of the association. This logo does not signify accreditation or recognition of the members by the professional body.
• Companies/corporations/employer bodies that employ registered practitioners are encouraged to join the association to allow them to play an active role in legislative and regulatory matters that directly affect their employees, clients and associates.
• Individual persons, other professional bodies and international organisations are welcome to become members of the association.
• Manufacturers, importers and distributors of equipment relating to the work at height industry are encouraged to join the Association.
FoR MoRe InFoRMAtIon, ContACt: tel: 011 455 6243 – Secretariatemail: [email protected]
For more information visit www.stalcor.co.za or call Stalcor: Germiston 011 871 6900 Cape Town 021 928 2500 KwaZulu Natal 031 579 7500
Stainless Steel, Aluminium and Carbon Steel Suppliers
In the Stainless steel and aluminium business one name comes to mind first more than others: Stalcor. There’s good reason for this. Over the last 39 years we have proven that we are able to deliver first time, every time - big or small, near or far. Stalcor is dedicated to supplying quality products and total service to our clients.
For everything from sheet to tube to angle as well as a huge range of extrusions in aluminium, steel and stainless steel, When you work with Stalcor not only do you get quality material, but also the commitment of a group of people who will do everything possible to ensure you achieve your objectives.
BUILD WITH US AND WE WILL BUILD WITH YOU.
More Stainless and Aluminium than you have ever dreamed of.
Stalcor Ads 2013(137.5x210).indd 1 2013/02/12 1:07 PM
w.C. youngman S.A. (pty) ltd., trading as youngman Roofing, is a well established company of 29 years and is a leading supplier of roof sheeting and
associated products in various materials and profiles.
The purchase of the secret fix manufacturer, Diamondek, as well as the growth in our insulation business whose brands include, Ashgrid – The Roof Spacer System, Thermcoustex, Romatherm, Isotherm, lambdaBoard and Isoboard, have necessitated the consolidation of our various premises under one roof.
The 4500m2 state-of-the-art building will allow us to enhance service delivery to our customers. The factory has been designed to facilitate the manufacture of goods and loading of the delivery fleet as well as customers' vehicles.
The drive-through customer collection area will allow efficient loading of roofing and accessories. A dedicated customer service team has been established to enhance our customers' experience and to expedite collections of goods including custom-made flashings.
The additional space will allow us to increase our stock holding of raw materials. This increased stock holding will ensure that continuity of supply is assured. Our increased and broader stock holding of sheeting, insulations, fixings and accessories will allow our clients to obtain all of their roofing requirements under one roof.
Youngman Roofing relocates to accommodate growth
Youngman Roofing is moving to its new premises situated on the site of the old Epic factory on the corner of Berkley and Bax Roads Maitland. The new premises are situated 50 metres from the old premises in Berkley Road Maitland Cape Town.
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Cnr. Berkley and Bax Roads, Maitland, 7405 PO Box 568, Maitland 7404.
WE ARE MOVING TO CNR BERKLEY AND BAX ROADS MAITLAND, 50M FROM THE OLD PREMISES. FOR OUR CLIENTS' CONVENIENCE, WE HAVE
RECENTLY OPENED A BRANCH IN UPINGTON, HEADED BY JANNIE VAN ZYL.
FOR OUR CLIENTS' CONVENIENCE, WE HAVE RECENTLY OPENED A BRANCH IN UPINGTON,
HEADED BY JANNIE VAN ZYL.
Youngman Roofing’s estimating department continues to offer the service of pricing plans and bills of quantities at tender stage with the added service of on-site measuring by our technical team on completion of the roof structure.
we pride ourselves on our reputation of having an extremely efficient delivery service and are always willing to go that extra mile to accommodate the customer whenever possible.Youngman Roofing has always operated with various size delivery vehicles and our smaller delivery vehicles allow us to carry out emergency deliveries which are so often required in this industry.
Customer service is the quality upon which we at youngman Roofing have established our business and forms the cornerstone of our culture. we would like to take this opportunity to thank our clients for their continued support and assure them of our continued commitment to service excellence.
FoR MoRe InFoRMAtIon, ContACt:
tel: 021 511 8125email: [email protected] web: www.youngman.co.za Address: Cnr. Berkley and Bax Roads, Maitland, 7405
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Butyl Seal Pty (Ltd)20A Staal StreetKyasands 2163Tel: 011 462-1840Fax: 011 704-4531e-mail: [email protected]: www.butylseal.co.za
Distributors required in the Freestate, Limpopo, Northern cape and Mpumalanga areas.
Seals the following roofing materials:Galvanised, fibreglass, plastic, PVC,Polycarbonate, chromodekand aluminium
RAMCO STEEL MANUFACTURE AND DISTRIBUTE STEEL AND ROOF PRODUCTS AND ACCESSORIES.Professional advice, excellent service and quality products for heavy-duty construction or home-improvement projects.
FOR MORE INFORMATION, CONTACT:
(t) 051 534 1399 (c) 084 851 8196(e) [email protected](w) www.ramcosteel.co.za
No 1a Blue Streetc/o Pink & Blue StreetsIndustrial area Botshabelo
a.be. - part of the Chryso Southern Africa group – provided 4mm thick index unigum membranes as well as Super laykold, a rubberised bitumen emulsion (usually applied in conjunction with index unigum membranes) for the waterproofing of an earth dam, as well as various ponds that line the approach driveway to the Norotshama main complex.
Brett papayanni, a.b.e.’s Technical Sales Consultant in the Western Cape, said the project called for the waterproofing of a total area of about 4 599m2.
“One of a.b.e.’s approved applicators, pieter Blaauw, head of Extreme Waterproofing, visited the lodge as a guest and, on discovering that the previous waterproofing of the ponds and dam had failed, suggested that the owners invest in the services of his company, using a.b.e. products that he had successfully installed over many years,” papayanni explained. “The owners of the lodge subsequently travelled to Cape Town and the contract for the new waterproofing was awarded to Extreme Waterproofing.”
It proved a challenging contract with the Namibian mid-summer temperatures a major element to contend with.
“In the draining heat, the existing earth dam was compacted where necessary. The ground areas to receive new waterproofing were levelled before index unigum was installed in a loose laid application. The overlaps were torched on to seal the edges.”
a.b.e. Trusted combination used for waterproofing Namibian water features
a.b.e. Construction Chemicals recently supplied a proven combination of two of its products for the waterproofing of water features at Namibia’s popular Norotshama River Resort, set on the banks of the Orange River about 60kms from the South African border.
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Work in progress and the final product after the waterproofing of a dam and ponds at the upmarket Norotshama River Resort in Namibia.
MARCH 2013
Servicing the domestic and commercial industries in the Western Cape since 2005, providing services ranging from waterproofing, and roofing to painting.
For more information:
Pieter Blaauw: 082 228 2975Fax: 0866 386 015Email: [email protected]: www.extremewrp.co.za
• Professional service focusing on quality workmanship and great service • Guaranteed installations and follow up meetings with customers to ensure customer satisfaction• Approved applicators of a.b.e waterproofing products• Adhere to strict safety measures and are insured for public liability.
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a.b.e.’s index unigum is a waterproofing membrane manufactured using polymer-modified bitumen which has been reinforced with a rot-proof, non-woven polyester fabric and a strengthened fibreglass mat. “The membranes are covered on the top face with an evenly distributed fine, serigraph talc which allows the membranes to be unrolled easily. The lower face is lined with an anti-adhesive film and embossed so that the film retracts easily and presents a larger area for faster application. when the membrane reaches the correct temperature, the lower face becomes smooth indicating it is ready for bonding. The embossing feature also allows good vapour diffusion in loose laid or spot bonded applications,” papayanni explained.
Super Laykold, another highly reputable a.b.e. waterproofing product of many years standing, was used as flashing for the water features at Norotshama River Resort. “Super laykold provides outstanding adhesion and is tough, flexible and non-toxic – and suitable for total water immersion, which was called for in this project. In addition to its suitability for sealing water features such as at Norotshama, the product can also be used for the waterproofing of parapet walls, flat roofs, as well as sealing joints, laps and roofing screws on corrugated roofs,” he adds.
ContACt detAIls:
pieter Blaauw: 082 228 2975Fax: 0866 386 015email: [email protected]: www.extremewrp.co.za
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Servicing the domestic and commercial industries in the Western Cape since 2005, providing services ranging from waterproofing, and roofing to painting.
For more information:
Pieter Blaauw: 082 228 2975Fax: 0866 386 015Email: [email protected]: www.extremewrp.co.za
• Professional service focusing on quality workmanship and great service • Guaranteed installations and follow up meetings with customers to ensure customer satisfaction• Approved applicators of a.b.e waterproofing products• Adhere to strict safety measures and are insured for public liability.
In an effort to provide the best and most technologically advanced waterproofing solutions in the market, the company is committed to continuously evolving its product range. Of
late, the company has focused extensively on the concept of spray-applied waterproofing systems, combining the polyurethane expertise of Rhino Coatings with the waterproofing expertise of Darchem. The result is polyspray 100.
polyspray 100 is a two-part spray-on polyurethane chemical that when mixed, forms a protective coating that creates a seamless, air and water tight bond with all surfaces, eliminating water leaks, rust and other corroding elements. polyspray 100, once installed, offers a ten year maintenance free guarantee backed by the manufacturer, Rhino Coatings, which has been specialising in the polyurethane spray-on protective coatings locally since 1983. The product has be trialled and tested and carries the Agrément Certificate of South Africa. (Pending)
Polyspray 100 can be applied to all roofing structures, tanking applications, water features, flower boxes, box gutters, and light trafficable decks.
polyspray 100 can bond to virtually any substrate, such as concrete, steel, aluminium, wood, asbestos, polystyrene and fibre glass, making the application possibilities almost endless.
The speed of polyspray 100 and the fast cure times (full cure n 24 hours) minimise downtime on site and the application can handle light traffic within minutes after application. Polyspray 100 can be applied to any thickness required with no lag time between coats and is available in a range of standard colours.
All applicators of polyspray 100 are approved by Darachem and have the correct machinery, training and specification to apply the product for the application.
polyspray 100 formulation is environmentally friendly and contains no vOCs, CfCs or solvents and is safe to apply on-site. polyspray 100 provides an effective way to extend the life of your customers’ assets and maximising the return they get on their investment with minimal inconvenience.
polyspray 100 Darachem is a local manufacturer of modified bitumen waterproofing
membranes, as well as an assortment of acrylics and bitumen liquid specialist products and has been in the waterproofing industry since 1974.
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with over 37 years of experience in the industry, Darachem manufactures a wide range of waterproofing materials that are specifically developed and guaranteed for South African conditions.
For more information, call 011 892 2917 or visit www.darachem.co.za.
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Ramco Steel offers professional advice, excellent service and quality products for heavy-duty construction or home-improvement projects.
pRoduCt oFFeRIng:
• Corrugated iron• IBR roofing• Steel roofing• Roof sheeting• Steel housing
we also manufacture corrugated sheeting to your requirements and deliver to your site in South Africa.
RAMCo steel HAs A lARge ClIent BAse CoMpRIsIng oF:
• wholesalers • privately owned groups• Independent merchants and • Smaller retail outlets
Our efficient distribution network ensures prompt deliveries to all our customers located nationally as well as the neighbouring countries, including lesotho.
pRoduCts
Ramco Steel offers a wide range of steel roofing, ceiling products, and hardware products, stocking a huge selection of tools and DIy tools for your business, home or construction site:
• IBR roofing• Corrugated iron• Aluzink• Chromadek• wide-span• Bull nosing• Steel sections• flashing
CoRRugAted IRon
Corrugated iron is the most commonly using roofing material for domestic use. It is referred to as the S-Rib profile. The S-Rib is derived from the sinus curve and offers very strong structural properties. The 8.5.76 stand for 8.5 corrugations over the width of the sheet and 76 refers to the distance in millimetres between two consecutive curves.
teCHnICAl dAtA FoR CoRRugAted pRoFIle: The overall width of an 8.5 corrugated sheet is 700mm and a 10.5 corrugated sheet is 840mm.
stRuCtuRAl guIdelInes:
Corrugated roof sheets are available in a wide range of materials displaying various structural properties. It should be noted that the load span characteristics are only to be used as a broad guideline as purlin spacing is also dependent on other factors, such as the prevailing winds in a certain area, the presence of dust and other particles in industrial areas, the type of structure that is being erected, etc. we therefore recommend that an engineer is consulted to determine the purlin spacing for a specific application.
Ramco steel Leading wholesaler, manufacturers and countrywide distributors of steel and
roof products in Botshabelo, Bloemfontein, Ramco Steel is a leading supplier of steel and value-added steel products in South Africa.
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steel RooFIng poduCts
RooF sHeetIng• Corrugated iron roof sheeting• Standard IBR roof sheeting• IBR widespan roof sheeting
Bull nosIng• 8½ and 10½ corrugated iron, bull nosing• Standard IBR, bull nosing• IBR widespan, bull nosing
CentRe CRAnKIng• 8½ and 10½ corrugated iron, centre cranking • Standard IBR, centre cranking • IBR widespan, centre cranking
IBR RooFIng ClosuRes (HIp FlAsHIng)• IBR broad (ridge) roofing closure• IBR narrow (eave) roofing closure
FlAsHIngs• Internal corner flashings • External corner flashings • Rolled edge flashings
IBR sHeetIngIBR is a square fluted profile with an effective covering width of 686mm designed for use in side cladding or roofing material in commercial, industrial and residential buildings. The name IBR is an abbreviation for ‘Inverted Box Rib’ and has become a household name in the South African industry.
stRuCtuRAl guIdelInes:
IBR roof sheets are available in a wide range of materials offering various structural properties. It should be noted that the load span characteristics are only to be used as a broad guideline, as purlin spacing is also dependent on other factors such as the prevailing winds in a certain area, snow during winter periods, the presence of dust and other particles in industrial areas, the type of structure that is being erected, etc. we therefore recommend that an engineer is consulted to determine the purlin spacing for a specific application.
using advanced manufacturing techniques and equipment, you are sure to receive the highest standard in steel sheeting from Ramco Steel, which also offers a wide range of hardware products, stocking a huge selection of items, tools and DIy tools for your business, home or construction site.
The company is proud of the high quality products it produces, which are made to SABS standards.
FoR MoRe InFoRMAtIon, ContACt:
(t) 051 534 1399(w) www.ramcosteel.co.za
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The innovative European manufacturer provides affordable, lightweight stone-coated roof systems in highly protective AZ185/Z300 corrosion-resistant steel,
ideal also for coastal applications. This premium steel roofing system goes beyond the performance of traditional roofing materials, while convincingly maintaining the look of the traditional roof tile.
This premium roof system is ideal for use on new projects and re-roofs, specifically for thatch and old ‘zink’ roofs, creating an effective weather barrier, removing the high maintenance requirements and shielding the property from fire and hail. This can also save owners of thatched properties around 30% on their insurance premiums. Because they are far lighter than traditional roofing, they don’t require the same heavy (and expensive) roof structure and being recyclable they are in tune with current sustainability trends.
Metrotile is conscious of the environment and with an average lifespan of more than 30 years this sustainable roofing system requires little maintenance and is 100% recyclable. The carbon footprint left is also smaller because they weigh on average only 6kg/m2, and much less transport is needed than for traditional roofing of the same coverage.
Eco-friendly roofing from Metrotile
Metrotile SA focuses on bringing a range of unique and eco-friendly roofing products to the South African market. Successful all over Europe and in many African countries, Metrotile (Europe) has put their weight behind Metrotile SA to replicate their international success.
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Metrotile Woodshake in action as thatch alternative.
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CLASS by yo u r ch o i ce o r B i-M eta l
JHB Branch: Contact: Tanny | Tel: 011 - 979 5026/7 | Cell: 082 782 6854 | P.O. Box 14353, Bredell, Kempton Park
Manufactured in Taiwan
DBN Branch: Contact: Summers | Tel/Fax: 031 - 765 1604 | Cell: 082 564 1463 | [email protected]
www.hengfuscrews.co.za
further contributing to a green future, Metrotile leads the way in energy-saving roofing with its Metrotile Lightpower photovoltaic solar tile and proprietary ventilation systems.
‘lightpower’ generates 60wp per tile and because it is integrated into the roof tile, it is more secure than retrofitted solar panels and does not spoil the aesthetics of the roof.
The energy efficient ventilation systems add to the heat reflective steel substrate for a cooler roof, in line with the regulatory move towards more energy efficient buildings in South Africa. The PV system is ideal for new roofs and re-roofing and integrates with a number of the popular Metrotile profiles, eg. Metrotile woodshake/Thatch, Metrotile Bond and Metrotile Roman.
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Building on their success all over Europe and in many other African countries, Metrotile is now lifting the bar for metal roofing in Southern Africa. Since their debut in the South Africa just over a year ago, Metrotile (SA) has expanded their range of unique and ecologically conscious roofing products whilst focusing on superior customer service and sustainability.
Metrotile profiles are designed and manufactured to the highest possible standards. They are resistant to extreme weather conditions and because they are far lighter than traditional roofing, they don’t require the same heavy (and expensive) roof structure. In keeping with the current sustainability trends, these tiles are ideal for use on new projects and re-roofs, specifically for thatch and old ‘zink’ roofs.
In their quest for the constant improvement of the ‘Metrotile experience,’ Metrotile SA is actively recruiting and training teams of competent installers to ensure that their roof installations match the quality and reputation of their premium product. And to underpin their commitment to proper installations, they are also offer a free maintenance plan for all new Metrotile roofs, installed by their approved contractors.
These initiatives are some of the reasons why the name Metrotile is equal to peace of mind and fast becoming the preferred supplier of eco-friendly roofing systems in the world.
FoR MoRe InFoRMAtIon, ContACt:
stephan schoombie(c) 082 4518711(e) [email protected]
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The new arrivals are two lEO 18gT Spider crawlers (working height of 17,6m) and a lEO 23gT (working height of 23m) sold to sister-company goscor Access
Rental. The lEO 15gT and lEO 25T+ are expected soon to complement the initial fleet.
The versatile lEOs – each one hand-assembled in the Teupen factory in gronau, germany – are track-driven, and as much at home on the gleaming tiles of shopping centres as they are on the uneven forest floor. “The LEOs are suitable for a range of indoor and outdoor applications,” says Carl van Dyk, goscor sales executive.
“Indoors, you’re looking at a game-changer in shopping centres, office buildings, museums and auditoriums. Anywhere, in fact, where there are high-level, difficult-to-access areas, such as glass roofs and curved glass facades, and where damage to the flooring is an issue to be considered.”
“Of all the companies making access machines, Teupen is the one that has responded most intelligently to the challenges of modern facilities architecture,” van Dyk says. “Too often these days, architects design magnificent glass atriums in office buildings and shopping centres with little thought as to how these will be maintained. fortunately, the Teupen engineers have been able to create a range of machines that can keep up with dynamic architectural styles.”
The lEO’s remarkably compact travelling dimensions (the lEO 18gT, for example, is just 780mm wide, the lEO 23gT just 980mm wide, and every machine in the lEO range is less than 2m high in travel position), as well as their ability to successfully negotiate stairs allow the Spider crawlers to gain access to these areas where conventional powered access platforms cannot.
goscor’s leos on the prowl in sA
Goscor Hi-Reach, an Imperial group company, has announced the arrival in SA of three LEO access machines from world-leading German manufacturer, Teupen. The LEO (leopard in German) range of ‘Spider’ crawlers has won worldwide acclaim for
their combination of power, manoeuvrability and groundbreaking engineering.
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A Teupen unit cherry-picker was specially designed to maintain the ‘Gherkin’ tower building, in central London.
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Additionally, all lEO machines (including the impressive lEO 50GT, a 50m working height machine) exert a floor loading of less than 500kg/m², essential for working in shopping malls on mezzanine levels.
van Dyk says a large market for Teupen machines is the ‘tree care industry’ – including forestry and tree cutting in parks, gardens, and cemeteries – as well as in the area of facilities management.
“The lEOs have proven themselves in Europe in a host of outdoor municipal applications. we believe the lEOs will be a boon for those in forestry and horticulture in South Africa, as well as those involved in construction, municipal and general facilities maintenance and stadium care,” van Dyk says.
The Teupen lEO 23 gT is suited for job sites that provide little space and require great working heights. The variable and quick multi-position stabilising system – the legs of the ‘Spider’; the 180° rotatable basket; and the flexible articulated and telescopic boom are designed to make for easy and effective operation in the most challenging working environments. powered by either a diesel or petrol engine, the LEOs are dual-AC-drive fitted and work with either a cable remote or a full remote.
Over the years, Teupen has supplied special-use machines around the world. Examples are the iconic 30 St Mary Axe, or ‘gherkin’ tower, in central london, which was specially designed at level 36 for a Teupen unit cherry-picker on a powered trolley to maintain the building. Also, the award-winning engineers behind the Berlin Central Station designed the station around a custom-made Teupen machine.
Operating from its headquarters in Alrode, goscor Hi-Reach are the sole distributors of Teupen and genie products in South Africa. goscor Hi-Reach also provides spares, ongoing maintenance and repairs, as well as full refurbishment of machines for its customers across southern Africa.
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The award-winning engineers behind the Berlin Central Station designed the station around a custom-made Teupen machine.
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A regular home loses up to 35% of its energy through an uninsulated roof, and gains the same amount of energy in summer. By specifying thermal insulation in the design
of all new buildings, in combination with additional energy saving techniques, it is possible to save up to 78% of a building's energy consumption for both heating and cooling.
until recently, in Breaking New ground (BNg) and RDp housing developments, houses were most often built with just a roof, and no ceiling or insulation.
South Africa's mounting energy crisis has resulted in the need to find innovative ways to save electricity in homes. To address this, the SABS has published new legislation on energy efficiency in buildings. The best way to insulate a home according to the implemented standards and guidelines is to fit an insulated ceiling. gyproc has two types of ceilings that offer the insulation values stipulated by the DTI.
woMAn's BuIld - newCAstle Kzn
Saint-gobain recently partnered with the Department of Human Settlements, in their annual Woman's Build project, which was held during August as part of Women's month, in the Madadeni Township, with the official hand over conducted by the Minister of Human Settlements, Mr. Tokyo Sexwale.
The project is unique, as only female contractors are employed, assisted by volunteers in the community to build homes for elderly women, one of whom was living on the street. gyproc and Isover donated ceiling and insulation materials for the five homes that were built for the 2012 project.
"It was incredibly humbling to view the homes built by women for women, homes with ceilings, a luxury none of the recipients of the homes had ever experienced before," said Siphele gumede of Saint-gobain.
Illovo pRojeCt - duRBAn soutH Kzn
Saint-gobain, after much lobbying managed to succeed in convincing the municipality of EThekwini to commit to funding the installation of ceilings and insulation into phase 1 of their 18 800m2 affordable housing project in Illovo.
The legislation published by the SABS now stipulates the installation of ceilings and insulation, and is no longer considered a luxury in housing development projects.
The opportunity to fit two show units with Gyproc ceilings and Isover insulation generated much excitement in the community, who had never seen a government home with a ceiling. This was also the perfect platform to meet with and educate the appointed contractor, DSB Built Environment Projects on the benefit of installing ceilings and insulation in the homes.
Saint-Gobain ceilings and insulation make a real difference to the people of KZN
Saint-Gobain is actively making a difference to the communities in the Madadeni Township in Newcastle and in Illovo Durban South, through their altruistic contribution in two projects, which
aim to improve living conditions through the provision of ceilings and insulation in homes.
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Saint-Gobain's Siphelele Gumede with home beneficiary and Anathi from main project contractor Motheo Construction.
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"we are very grateful to all parties who recognized the long-term benefits to residents and the mounting energy crisis in South Africa, by reducing the current electricity usage through the installation of ceilings and insulation in the housing development. Saint-gobain are pleased to be able to make a difference through our contribution to the affordable housing project and in so doing improved the quality of the lives of the people in Illovo," explained Siphele gumede.
leading interior building solutions group, Saint-gobain gyproc strives to make a difference in the lives of South Africans through the provision of lightweight building materials and energy conserving RhinoBoard for all interior lining applications, from ceilings to thermal dry lining.
ABout sAInt-goBAIn gypRoC
leading interior building solutions group, Saint-gobain gyproc, manufactures lightweight building materials and RhinoBoard for all interior lining applications, from ceilings to thermal dry lining.
Saint-gobain gyproc brings its products closer to its consumers, and aims to be the preferred partner with customers by making it easy to do business by supplying product and system solutions that are innovative, energy efficient and sustainable, incorporating both current and new methodologies in building systems to the South African and Sub-Saharan markets.
By meeting the cost, performance and visual requirements for the internal lining of a broad range of developments within various sectors including education, healthcare, affordable housing, leisure, residential, retail and commercial, Saint-gobain gyproc products are known and trusted because of their exacting performance standards. All products have been tried, tested and are backed by over 80 years of experience and industry knowledge.
with a company history that spans over 300 years and a presence in 55 countries globally, Saint-gobain retains its competitive edge by continually reacting to changing market needs, constant research development, product testing and flexibility of design.
For more information, visit www.gyproc.co.za.
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Saint-Gobain's Siphelele Gumede with co-sponsor owner of Lungi Construction.
Member from Saint-Gobain demonstrates how to install ‘Isover loft insulation’ manufactured specifically for the affordable housing market in Illovo.
Tokyo Sexwale addresses the media in Madadeni.
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According to CEO, Leo Slootmans, security and fire system maintenance is often the last line item in building OpEX considerations and a virtual Cinderella service
when compared with the more visible maintenance and building performance issues.
“The last thing, it might be, but it’s startling how quickly the matter escalates when facing building closure by local authorities owing to public safety concerns.”
to pRevent suCH BuIldIng ClosuRes, slootMAns AdvIses FACIlItIes MAnAgeRs to:
1. Ensure equipment is working. This includes, not only security and access, but also fire detection, evacuation and fire extinguishing systems.
2. Run regular tests – alert tenants and customers as required.3. Stay up to date with all the latest regulations and changes
to both building codes and municipal laws.
4. prioritise the maintenance and repair of systems not working.
5. Engage the services of a professional, pSIRA accredited service and maintenance company.
Building managers are faced with a changing landscape, both in terms of building safety codes and also system technology, says Slootmans. “Much original system hardware has simply gone out of date or has become totally obsolete owing to refurbishments and structural changes within a retail mall or public building. fire systems, both passive and active, originally approved under rational design considerations may need a complete review once seemingly innocent work has been done inside the building. for example, breaking through walls, partitions or drilling through other structures to allow service duct entry or cabling could completely change the fire performance of the building,” he says.
Prevent loss of business with timely servicing
The spate of retail mall and other public facility closures by local authorities invarious centres during 2012, especially in Cape Town, could have been avoided by
contracting a professional servicing and maintenance package, says the CEO of national fire and security engineering and maintenance services company, Firespec.F
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Photographs: Gareth Griffiths Imaging
Automatically activated fire roller shutter door at a popular food outlet.
Integrated fire protection controls at Food Lovers’ Market.
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firespec offers a comprehensive package of new equipment and service according to Slootmans. “Take the work we did for ACSA at the new departure terminal of Cape Town International Airport. This major project involved the installation and total integration of active systems and passive controls. This facilitates the safe handling of fire and security emergencies including building evacuation,” he says. “The integrated system that we installed ensures emergencies are dealt with seamlessly both at source and downstream, for example the shutdown of lpg automatically to all kitchens once the fire alert has been automatically activated. In addition, key passive fire protection features were installed, increasing the time window for safe evacuations to occur, or simply acting as barriers to flames.”
According to Slootmans, his company is uniquely positioned to service both existing and new systems, even those not originally installed by the company. “The taking of shortcuts and cheap options can be the start of a rocky road to closure,” he advises.
FoR MoRe InFoRMAtIon, ContACt:
leo slootmans (Ceo)021 685 [email protected]
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Integrated fire protection controls at Food Lovers’ Market.
Integrated fire control measures at Cape Town Airport.
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worse still, is the fact that many installers of downlights themselves do not adhere to the rules about installing downlights in the vicinity of roof structure
elements, e.g. purlins. fires have even occurred in the absence of insulation, where just the wooden structural members begin to char, owing to the excessive heat created mainly by halogen downlight globes and sometimes within 240-12 v transformers.
The topic has come to the fore in recent months with the involvement of The Thermal Insulation Association of South Africa who are establishing a technical working committee to evolve governing standards for their members. The problem is not unique to South Africa; in the UK, suitable approved fire resistant covers are a mandatory requirement with insulation installations.
When Australia adopted new Energy Efficiency legislation a few years back and introduced a free insulation scheme for domestic households, it enticed many fly-by-night operators into the insulation industry.
Some of these operators did not adhere to appropriate guidelines, resulting in close to 90 fires, which ultimately led to the resignation of the then federal Environmental Minister, peter garrett.
Eco-Insulation has devised some special solutions to control the downlighter fire hazard. The devices pictured below were designed, built and the intellectual property of Eco-Insulation Cape Town
FoR MoRe InFoRMAtIon, ContACt:
Richard ellisCell: 083 357 1870email: [email protected]: www.eco-insulation.co.za
Control Downlighter Fire Risk in the Roof
The issue of downlights and finding a suitable barrier and installation method remains an ongoing challenge to contractors.
Photographs: Gareth Griffiths Imaging FIR
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Making ready for the installation of a downlighter protector. Note: proximity of the wooden cross-member, now protected by the cone.
A completed installation. Note how hot air is vented out into the roof space. Patent: Eco-Cape Town
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ART Solar – which is the only South African owned pv manufacturer – specializes in the manufacture of solar pv modules for the sustainable generation of electrical
power. The company is set to play a significant role in renewable energy - initially in South Africa, followed by the Sub-Saharan market and the African continent.
“ART Solar uses the latest pv technology to convert solar energy to electricity. By utilising this environmentally-friendly technology to generate electrical power, the company provides long term solutions to the current and predicted electricity issues facing South Africa,” says Dr. Ronald lange, chief operating officer for ART Solar. “PV modules – which use daylight to generate electricity – are gaining popularity globally as a form of renewable energy that is clean, emission- and noise-free, sustainable, safe and cost-efficient.
“These modules are easy to install and require no maintenance, apart from occasional cleaning. Other important features are the 25 year guarantee offered by ART Solar and an estimated 40 year lifetime of the module. The company also offers a technical advisory and support service throughout the country.
“Customers value the flexibility of our highly skilled team that designs and produces modules according to exact requirements. Important factors also include local content, black economic empowerment and enhanced aesthetics of these modules.”
The company has made a significant investment in the latest equipment from Swiss equipment manufacturer – Meyer Burger Swiss Solar Systems – and benefits from shared technology with global pv specialists.
pv modules, which adhere to stringent International Electrotechnical Commission (IEC) specifications, are certified at ART Solar by the leading and independent test institute Tüv Rheinland in germany.
The establishment of ART Solar gives the South African market access to high quality, aesthetically pleasing and locally manufactured pv panels.
ARt solar establishes Manufacturing Plant in KZNThe first photovoltaic (PV) solar panel manufacturing plant in Kwa-Zulu Natal
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The first photovoltaic (PV) solar panel manufacturing plant in Kwa-Zulu Natal has recently been established in New Germany.
PV modules provide a form of renewable energy that is clean, emission and noise-free, sustainable, safe and cost-efficient. These modules are easy to install and require no maintenance, apart from occasional cleaning. Other important features are the 25 year guarantee offered by ART Solar and an estimated 40 year lifetime of the module that this washer is conductive.
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