Intertenancy Barrier Systems available now

Cost effective, high performance intertenancy solutions for terrace homes.

Appraisal No.928 [2016]

*

Benefits

High fire protection and noise control performance — GIB® Intertenancy Barrier Systems achieve between 61–68

STC, well in excess of the New Zealand Building Code minimum for intertenancy walls (clause G6).

— 60 minute FRR.

No acoustic or fire sealing required where services penetrate wall linings, within limitations*.

Cost effective — Comparing total cost of the system (including labour,

foundations, equipment) GIB® Intertenancy Barrier Systems are some of the most cost effective in the market.

Narrow footprint — Maximise the available tenancy area of each unit.

Compatible wth GIB® Bracing systems

Lightweight construction — No need for additional/specific foundation designs. — Particularly attractive in seismic areas.

Easy and fast to install — No specialised subtrades for installation. — No specialised equipment like cranes. — Often results in faster council inspections due to fewer

problems with penetration design. — No need to take the wall linings up to the roof space.

Performance and durability

GIB Barrierline® has a specialised formulation with a water and mould resistant core allowing GIB Barrierline® to be exposed to the elements once installed for up to 12 weeks giving you flexibility in construction. GIB Fyreline® used in the roof cavity can be exposed once installed for up to 4 weeks.

Thoroughly tested in the lab and in construction trials specifically for New Zealand conditions. Testing has included freeze-thaw cycles, soak-age tests, and extended outdoor exposure.

Tools and resources

— Revit and CAD details and objects available for easy design documentation.

— Specification available on Masterspec and SmartSpec. — GIB® Intertenancy Barrier Systems literature available

in hardcopy or on the GIB® website for download with detailed technical information, warranties and details.

— GIB® Terrace Home Guide available in hardcopy and on the GIB® website for advice and guidance around design considerations of terrace homes.

— Models/prototypes available to view.

Visit gib.co.nz to download the system manual and watch a short video.

Contact your GIB® representative for more information and specific advice for your current and future projects.

See GIB® Intertenancy Barrier Systems for Terrace Homes for details.

Note GIB Barrierline® plasterboard is manufactured to Winstone Wallboards specific specification from a reputable overseas manufacturer.

Introduction to the new GIB® Intertenancy Barrier Systems

GIB® Intertenancy Barrier Systems for Terrace Homes are designed to provide a NZBC compliant separating wall between attached dwellings. The system consists of a double timber frame wall with a 25mm thick GIB Barrierline® plasterboard barrier between the frames. The primary fire resistance is provided by the GIB Barrierline® barrier, with the GIB® wall linings contributing to some extent.

This allows the wall linings to be used for structural bracing and to incorporate untreated penetrations, within limitations. The basis of the acoustic performance is a double cavity system. This provides isolation from both airborne and impact sound. Insulation in both cavities is used to provide thermal comfort and noise attenuation levels and allows certain services to penetrate the wall linings.

Specification number

Overall width

Weight of system (kg/m2)

FRR STC Lining requirements

Timber frame walls — with GIB Barrierline® central barrier

GBT(L)AB 60a 300–330mm 65 60/60/60 68 2 x 10mm GIB® Standard plasterboard each side

GBT(L)AB 60b 280–310mm 55 60/60/60 64 1 x 10mm GIB Noiseline® each side

GBT(L)AB 60c 286–316mm 62 60/60/60 67 1 x 13mm GIB Noiseline® each side

GBT(L)AB 60d 286–316mm 54 60/60/60 61 1 x 13mm GIB® Standard plasterboard each side

GIB® INTERTENANCY BARRIER SYSTEMS 2 NOVEMBER 2016GIB® HELPLINE 0800 100 442 OR GIB.CO.NZ FOR MORE INFO

THE COST OF THE INTERTENANCY SPECIFICATION

The breakdown of costs for each intertenancy system has been independently assessed by a third party Quantity Surveyor and aims to reflect the price tag of each intertenancy system, including all material components, labour, additional foundation design, equipment hire, sub trades and penetration design.

SYSTEM TOTAL COST OF INTERTENANCY WALL CONSTRUCTION FOR TYPICAL TERRACE HOME*

Foundations

Precast concrete

Masonry block

Autoclaved Aerated Concrete (average)

GIB® Barrier System (average)

GIB® Double Frame (average)

MaterialsLabour Electrical

* Costing has been based on a typical multi-unit terraced house construction containing five, two story units with four intertenancy walls. Each wall was assumed to be 10m long x 5.70m high to the eaves with a 30 degree pitch forming a raking wall, and constructed with standard timber framing. Each Intertenancy wall area is approximately 71.00m2 with three electrical outlets each side of the intertenancy walls, i.e. 12 per wall.

The ground floor is a typical 100mm reinforced slab utilising a Rib raft™ system with specific design for heavier foundations required by concrete systems. There are no cantilevered soffits. The site is assumed to be within a 20km radius of the Auckland, constructed on a flat site, with soils of good load bearing capacity and excellent access. All rates include subcontractor margins. Compiled June 2016.

GIB® INTERTENANCY BARRIER SYSTEMS 3NOVEMBER 2016 GIB® HELPLINE 0800 100 442 OR GIB.CO.NZ FOR MORE INFO

GIB® Intertenancy Barrier Systems FAQs

Q: Can I penetrate the wall linings with electrical and plumbing services without requiring fire or acoustic sealing and what are the maximum size of penetrations allowed?

A: Yes, you are able to penetrate the internal linings without additional fire or acoustic sealing. Maximum allowable unsealed penetration size is 65mm diameter for circular holes and 90x50mm for rectangular holes, limit to two per nominal 600mm wide framing cavity.

Q: How tall can I build the central barrier?A: Up to 12m high.

Q: Can you put holes or services through the GIB Barrierline® central barrier?

A: Penetrations may be made in the GIB Barrierline® in the roof space only. The penetrations must be fire sealed to suit the relevant FRR.

Q: Does it matter if the GIB Barrierline® and 16mm GIB Fyreline® products get wet during delivery?

A: Yes. GIB Barrierline® and 16mm GIB Fyreline® must be kept dry after delivery and before installation. These products are supplied with waterproof, non-refundable, covers (plastic or canvas).

Q: Why do we need to fix a layer of 16mm GIB Fyreline® to the central barrier in the roof space?

A: The 16mm GIB Fyreline® is required to achieve the insulation component of the 60 minute FRR.

Q: Does it matter if the GIB Barrierline® and 16mm GIB Fyreline® products get wet after installation?

A: Once installed and in a vertical orientation GIB Barrierline® can be exposed to the elements for up to 12 weeks before the building is closed in. Once installed and in a vertical orientation 16mm GIB Fyreline® can be exposed to the elements for up to 4 weeks before the building is closed in.

Q: How do you prevent fire spread around the end of the central barrier if the external wall has a batten cavity?

A: We require a full height solid treated timber batten at the end of the central barrier to block this fire spread path.

Q: Is the GIB Barrierline® or 16mm GIB Fyreline® affected by frost or ice?

A: Our testing showed that these products withstood freeze/thaw cycles. The freeze/thaw testing was carried out on both wet and dry samples of both of these products.

ARRANGEMENT OF A GIB® INTERTENANCY BARRIER SYSTEM (GBT(L)AB 60b)

10mm GIB Braceline/Noiseline®

Pink® Batts® R2.2 (90mm) glass wool insulation

GIB Barrierline®

GIB® H-Stud at 600mm centres

Fasteners at 300mm centres to each stud and plate

10mm GIB Braceline/Noiseline®

Place two GIB® Wall Clips (one each side) no more than 600mm below the top of each GIB® H-Stud, no further apart than 3000mm vertically

GIB® Rondo® 140 Perimeter Channel sealed on one side to floor slab with fire/acoustic sealant

GIB® INTERTENANCY BARRIER SYSTEMS 4 NOVEMBER 2016GIB® HELPLINE 0800 100 442 OR GIB.CO.NZ FOR MORE INFO