CAMBRIAN SLATEfor lasting looks

UniclassL521

Cl/SfB(47) N

Feb 2010

Heather 28

Langdale Green 29

Slate Grey 30

Client: Ystradgynlais Community Hospital,Powys Local Health BoardArchitect: Peter Barnes & AssociatesRoofing Contractor: M Camilleri & SonsRoofing LtdContractor: Anthony Davies LtdProduct: Cambrian Slate Grey

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CAMBRIAN SLATEA minimum of 60% recycled Welsh Slate means Cambrian weathers like natural slate

The first projects using Cambrian Slate werecompleted back in 1985. At the time, the introductionof Cambrian was heralded as a major step forward forembracing the principles of recycling natural slate anda new fixing method for roofing, leading to a covetedQueens Award for Technological Achievement in 1991.The success of Cambrian since proves that the earlyadopters were right in using a modern andrevolutionary approach to roofing products.

Cambrian Slates combine the beauty of natural slate,with a robust manufacturing process, which providesenhanced performance, and a product that weathersnaturally to deliver an aesthetic equalled only by itsnatural counterpart. Made in Wales using a minimum of 60% recycled Ffestiniog slate, and with acomprehensive 15 year Redland Roof SystemGuarantee, its attractiveness and lightweight benefitstranslate in many ways, across a wide number ofcontrasting building types. On the succeeding pages we showcase flagship projects, that highlight howCambrian Slate contributes across the builtenvironment from public sector re-roofing of existinghousing stock to private new build, schools, retail and hospitals. Many of the accompanying examplesincorporate specific elements that make up the wholeroofing package, including ridge and hip systems thatallow a finer roofing aesthetic.

WEATHERING WELLCambrian now has a 25 year history of installation in a wide variety of applications from office buildings,to re-roofing of public sector housing stock, to highend private housing and MOD sites across the UK.Due to its high natural slate content in manufacture, ithas aged in the same way as its natural counterpart todeliver an aesthetic that has improved with time. Theexample to the right, in Chessington, Surrey, showsCambrian fixed approximately10 years ago on a selfbuild refurbishment. Easy to fix, the Cambrian roof hasweathered just like its natural slate counterpart onthe front porch and adjacent property.

LOW PITCH, GUARANTEED PERFORMANCECambrian was developed to overcome some veryspecific problems that natural slate products cannot.The interlocking design and unique three point fixingallows application to the lowest angle of roof pitch and is guaranteed to perform on roofs as low as 15°.

Extensive wind tunnel and durability testing duringdevelopment also provides numerous security featuressuch as protected nail holes, allowing use on even themost exposed sites. In addition, Redland’s dry-fixaccessories range provides further security, and theadded benefit of a 15 Year Guarantee applicable to thecomplete roof system.

A fine example was completed at YstradgynlaisCommunity Hospital in Powys, where 6,500 squaremetres of Cambrian Slate Grey was used to re-roofthe whole of the complex. Natural Welsh slate wasdismissed as it couldn’t be guaranteed to perform atthe hospital roof’s lowest 17.5° angle of pitch, whereasCambrian, produced locally at Redland’s plant inRassau, offered both the looks and performancerequired. Redland’s dry-fix Rapid Vented Ridge andRapid Hip systems were used as part of thespecification, reducing the re-roofing time by 20%.

“This was not a straightforward replacement of the roof,the solution requiring widespread changes to the details indesign. The Redland guarantee ensures the specificationmet all Building Regulations and covered our design liabilityfor the roof.”

Mike Graham – Peter Barnes & Associates Chartered Architects

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Chessington self-build refurbishment highlighting naturally weathered tiles

SIR JOHN WESLEY SCHOOLUsing the most eco friendly A-rated resinslates availableA shining example of roofing forthe education marketplace is thenew nursery and classroombuildings at a voluntary-aidedprimary school in Ashford, Kent.Diocesan Architectural Servicesspecified the subtle Heathercoloured slates to provide a boldand sympathetic roof. Heather isjust one of three colours in theCambrian range, the others beingLangdale Green and Slate Grey,designed to reflect the regionalcolours associated withindigenous, quarried slate. Aswith all new education buildings,the decision to use the productwas helped by its ‘A’ rating in theBRE Green Guide to Specification2008. The signature part of thedesign is the nursery roof, whichhas a central turreted featureinterfacing traditional designwithin a modern structure.

To maintain the clean anduncluttered lines of the design, theturret was completed using thebespoke Cambrian Mitred Hipsystem, just one of the many

Architect: Diocesan Architectural Services LimitedRoofing Contractor: Charles Bates RoofingBuilder: Jenner Contractors LtdProduct: Cambrian Heather

fittings and accessoriescomplementing Cambrian andensuring the overall performanceof the roof system isn’tcompromised in any way.

“Cambrian is well regarded in theindustry, not only for its appearanceand the way it weathers, but alsobecause it is quick and easy to install.The fixing system provides all theperformance we expect from alightweight slate.”

David Clarke – Charles BatesRoofing (Kent) Ltd

Heather 28

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CATTERICK GARRISONRe-roofing against the elements

Catterick Garrison has served the armed forces for nearly onehundred years and much of itshousing stock was built in theinter and post war period. As part of its long term refurbishmentprogramme, MODern HousingSolutions, a consortium ofCarillion plc and Enterprise plccontracted by Defence EstatesOperations Housing (DE), choseCambrian slates to re-roof 120dwellings within the town. MHS are committed to ensuring a better service through improvedquality of workmanship andexecution, along with an eye on the importance of good quality housing.

The interlocking Cambrian Slatescombine the authentic naturalappearance of a traditional slateroof with guaranteed performancethat comes from precisionmanufacturing techniques. Theyreplaced the original fibre-cementslates, upgrading the roofs in theprocess by offering a combinationof dressed edges, random rivensurfaces and a thin leading edge.Cambrian’s light weight was amajor factor in the specification,meaning no modificationswere required to the existingroof structure.

Cambrian, and Redland’sassociated roof system, wastherefore specified to enhance the

Client: Ministry of Defence (Defence Estates Operations Housing)Management: MODern Housing SolutionsRoofing Supplier: SIG MiddlesboroughRoofing Contractor: Jennings Roofing Ltd,Leeds

roof aesthetics but also to ensurepotential maintenance issues werereduced, and form part of animprovement to living conditionsgenerally. The dry-fix specificationgives the ageing housing stock anew lease of life and is covered bythe Redland 15 year Roof SystemGuarantee. The solutionincorporates the Rapid Range,which provides maintenance freeweather-tight high-level ventilation,alongside a breathing roof systemusing Spirtech 250 vapourpermeable membrane, rather thanconventional underlay.

The finished site bears testamentto Cambrian delivering atraditional roof upgraded to meetall of the latest building regulationsand extends the useful life of wellbuilt housing stock.

“The roofing has helped to inject anew lease of life into our forces’family homes.”

Robert Corrigan – ProjectManager, MODern HousingSolutions

Slate Grey 30

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SALFORD REGENERATIONAward winning Pathfinder Scheme

Affordable housing in inner cityareas has been one of the maindrivers for new public and privateprojects over the past few years.Many areas have experiencedsevere population loss, housingmarket decline and failure,contributing to deprivation, poorquality housing and low levels ofowner occupation. As part of thewider Manchester SalfordPathfinder, and receiving fundingfrom the Housing Market RenewalProgramme, one of the largestschemes to help reverse this trendis the Higher Broughton/BroughtonGreen regeneration schemecompleted over a period of sevenyears in 2009.

The phased project, covering over30 acres, includes around 700 unitsof mixed style affordable housing,using innovative constructionmethods, high quality materials and architecturally led design byChurch Lukas Limited. This isexemplified by the widespread useof Redland’s Cambrian slates, withdry-fix solutions for verge and

Developer: Higher Broughton Partnership LP (Salford City Council, Royal Bank of Scotland, Inpartnership, City Spirit, Taylor Woodrow)Architect: Church Lukas LimitedMain contractor: Taylor WoodrowRoofing Contractor: Cobsen Davies Roofing Ltd

ridge junctions, including theRedland Ambi-Dry Verge Systemand Universal Angle Ridge Tiles on a DryVent Ridge along withvisually discreet CambrianThruVent tiles. The highperformance specification meetsall of the latest BuildingRegulations and British Standardsand the whole roof is backed bythe Redland 15 Year Roof System Guarantee.

The overall quality ensured thatelements of the scheme picked up the prestigious ManchesterEvening News ResidentialProperty Awards and led toacclaimed designer KevinMcCloud describing the scheme as the “best of the best”.

Slate Grey 30

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COLOUR RANGECambrian is available in threecolour options, Slate Grey (30),Langdale Green (29) and Heather(28) giving the three most popularand common slate colour optionsin the UK. Pre-weathered duringmanufacture, a slight lighteningoccurs with use, bringing anappearance even closer to itsnatural slate counterpart. Alwaysrequest a tile sample for an exactcolour reference.

Email: sales.redland@monier.comTelephone our Customer ServiceHotline: 08705 601000

FIXING For lasting security against winduplift, all Cambrian slates should betwice nailed and clipped with ourspecially designed stainless steelring-shanked nails plus slate, eavesand verge clips. All are supplied inpacks containing the correct typeand number of nails.

FITTINGSCambrian Slates are complementedby matching left-hand verge slates,slate-and-a-halves and double slates.See accessories for the range ofsystems to complement Cambrianroof slates.

COMPOSITIONA minimum of 60% of Cambrianslate manufacture is from quarriedWelsh slate spoil heap waste, with a further 20% of the content fromISO 14001 Certified manufacturers.The crushed slate is mixed with stone, resin and glass fibre reinforcement and pressed to form a strong durable slate.

SUSTAINABILITYRedland Cambrian Slates are themost eco-friendly resin slatesavailable. The 2008 Green Guideto Specification awards generic resin slates an “A” rating when part of standardroof constructions.

THIRD PARTY ACCREDITATIONCambrian Slates have alife expectancy of atleast 60 years and havebeen awarded BBAcertification No 87/1907

REDLAND ROOFING SYSTEM GUARANTEECambrian Slates, fittings andaccessories are designed and testedto work together. This guaranteesthat every Redland product isweathertight, and all junctions aresimilarly guaranteed. If any elementfails during its first 15 years, we willreplace it and pay for the associatedlabour and material costs.

TECHNICAL DATA

Size (overall) 300 x 336mm

Minimum Pitch and Headlapat 75mm headlap 15°at 50mm headlap 25°

(The minimum pitch is based on a maximum rafter

length of 10 metres. For rafter lengths greater than

this, please contact the Technical Solutions Hotline

on +44(0)8708 702595)

Maximum Pitch 90°(subject to fire resistance requirements above 69º)

Maximum Headlap 90mm

Minimum Gauge 210mm

Maximum Gaugebelow 25° 225mm25° and over 250mm

Linear Cover 300mm

Covering Capacityat max gauge 13.3 slates/m2

Weight * (approx.)

per 1,000 slates 1.24 tonnesat max gauge 17kg/m2

Battens Requiredat max gauge 4.0m/m2

Batten Size Rafter centres up to 450mm 38 x 25mmRafter centres up to 600mm 50 x 25mm

Nail Size # 30 x 2.65mm

Number of Slates/Pallet 600

Slate Grey (30)

Langdale Green (29)

Heather (28)

A

PERFORMANCE

* All weights nominal# Annular ring-shanked nail

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Slate Grey (30) - New from production

REDLAND TECHNICALSOLUTIONSSPECMASTERA complete guaranteed roofspecification service designed foryour client and your peace ofmind. Features include tailoredspecification clauses in NBS-basedformat, fully compliant with allBritish standards, 15 year designliability for all new build or re-roofing projects designed inaccordance with Specmaster. Toobtain a SpecMaster go towww.redland.co.uk/specmaster

DESIGN MASTERA comprehensive CAD library ofover 5,000 quality roofingdrawings, all drawings available inDWG and DXF format with acomplementary NBS basedspecification clause.Available for download atwww.redland.co.uk/designmaster

QUANTMASTERA roof materials quantityestimating service including tilingbattens and leadwork to eliminateover-ordering and under-ordering.Available by sending drawings toRedland Technical Solutions

FIXMASTERRedland’s fixing specificationservice removes the potential forroof failure by offering a choice ofeither a fixing specification tailoredto a specific roof design andlocation or a generic version.Complete an online datasheet atwww.redland.co.uk/fixmaster

ECOMASTERA complete guaranteedspecification service for projectsinvolving Redland RenewableEnergySystems includingcalculations of estimated energybenefits, approved installernetworks.Go towww.redland.co.uk/ecomaster

VIEWMASTERViewMaster is a quick and easyway to show how Cambrian lookswhen laid on a roof.To access ViewMaster visit:www.redland.co.uk/viewmaster

ACCESSORIESTo ensure optimum performance of a Cambrian roof, Redland has developeda comprehensive range of attractive, cost-effective and maintenance-freesolutions. For the full range, please refer to the Redland Guide to RoofingSystems or visit www.redland.co.uk/accessories

REDLAND SOLAR PV Harnessing solar energy is one ofthe most attractive and sustainablemeans of generating zero carbon,renewable energy for use inbuildings. A pitched roof is theideal surface for solar energy,collection for heat andelectricity generation.

Redland Solar PV, our secondgeneration of PV roof tiles,encompasses five new roof tile-specific PV systems – eachdeveloped to match one of our fivemost popular tile ranges – used byhouse builders, including a systemspecifically for Cambrian Slate.

Designed for performance, ease ofinstallation and good looks,Redland Solar PV offers significantbenefits in all three areas over“above the roof” panel systems,where poor installation cancompromise the roof structure.

DRY-FIX & VENTILATION Dry-Fix systems eliminate theneed for mortar bedding at keyjunctions on the roof and have anumber of significant advantages:

1. Secures the roof in severeweather conditions.

2. Eliminates mortar failure due topoor workmanship.

3. Quick and easy to fix,maintenance-free.

4. Can be laid even when badweather is expected.

5. Ventilation can be incorporatedat the ridge.

6. Complies with BS 5534 formechanical fixing and BS 5250for ventilation.

Good roof design does not justmean choosing the right slate. Theprotection of the supportingstructure from the harmful effectsof condensation is equallyimportant. The proven method forpreventing condensation isthrough the use of effective roofventilation to comply with

BS 5250. Redland’s range ofBreathing Roof Solutions, usingvapour permeable underlay withthe reliability and security of a dry-fix ventilated ridge providesspecifiers with simple, robust andguaranteed BS 5250-compliantspecifications, designed to meetchanges in building standards.

For full details of our dry-fix andventilation solutions, visitwww.redland.co.uk/accessories

REDLAND TECHNICALSOLUTIONS

SPECMASTER

A complete guaranteed roof specificationservice designed for your peace of mind.Features include tailored specification clausesin NBS-based format, fully compliant with allBritish standards, and a 15 year design liabilityfor all new build or re-roofing projectsdesigned in accordance with SpecMaster. To obtain a SpecMaster go towww.redland.co.uk/specmaster

DESIGNMASTER

A comprehensive CAD library of over 5,000quality roofing drawings, all available in DWGand DXF format with a complementary NBSbased specification clause.Available for download atwww.redland.co.uk/designmaster

QUANTMASTER

A roof materials quantity estimating serviceincluding tiling battens and leadwork toeliminate over-ordering and under-ordering.Available by sending drawings to RedlandTechnical Solutions

FIXMASTER

Redland’s fixing specification service removesthe potential for roof failure by offering achoice of either a fixing specification tailored toa specific roof design and location, or a genericversion. Complete an online datasheet atwww.redland.co.uk/fixmaster

ECOMASTER

A complete guaranteed specification service for projects involving Redland RenewableEnergy Systems including calculations ofestimated energy benefits and approvedinstaller networks. Go towww.redland.co.uk/ecomaster

VIEWMASTER

ViewMaster is a quick and easy way to showhow Cambrian looks when laid on a roof.To access ViewMaster visit:www.redland.co.uk/viewmaster

WORKMANSHIP WARRANTY

Independently insured cover for the workmanshipelement of your SpecMaster project.

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With a 25 year Power OutputGuarantee, Redland Solar PV isMCS certified and eligible for useon Feed-in-Tariff Schemes. It hasalso been extensively tested forwind-uplift and fire resistance andis covered by Redland’s 15 yearRoof Guarantee which assures thedurability and weathertightness ofthe whole roof.

Slate Grey (30) - approximately 18 months natural weathering

FURTHER INFORMATION

WEBSITESFurther information on Cambrian Slates and the full range of Redlandproducts can be found on our website.

www.redland.co.uk

CUSTOMER SERVICE HOTLINEFor all sales enquiries/orders call, fax or email theRedland Customer Service Hotline*

Tel: 08705 601000Fax: 08705 642742Email: sales.redland@monier.com

*Please be aware that calls to the customer service hotline may berecorded for training purposes

TECHNICAL SOLUTIONS HOTLINEFor technical enquiries and all information relating to DesignMaster,QuantMaster, FixMaster, SpecMaster, EcoMaster, ViewMaster and theWorkmanship Warranty please contact:

Redland Technical Solutions, Monier Ltd,Broadway Lane, South Cerney, CirencesterGloucestershire GL7 5UHTel: 08708 702595Fax: 08708 702596Email: technical.redland@monier.com

Further printed technical information on Cambrian Slates can be found in the following guidesRedland Guide to Roofing Systems

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