GIB Weatherline: Wrapping Its Way Around Kiwi Building Sites

“If you want to make a statement, wear purple.”

It’s a famous line attributed to former NBA basketball player Baron Davis, and a particularly apt way to describe GIB Weatherline, the distinctive purple coloured fibreglass-faced plasterboard, which is making a bold splash across an increasing number of Kiwi building sites as well as providing an essential layer of weathertightness underneath exterior cladding.

GIB Weatherline was launched in 2019 and is intended for use exclusively with drained and vented cavity cladding systems. Used as part of the wider GIB Weatherline Rigid Air Barrier system, GIB Weatherline functions as an air barrier and a secondary line of defence against water penetration into a building’s interior.

It has an advanced second-generation fibreglass liner on both front and back, with a highly modified gypsum core, containing water and mould inhibitors. This not only provides an excellent substrate for fire resistance applications, but it is also safe and easy to use for those handling and installing it, requiring no power tools to cut, saving time and money during the installation process.

Learn more about GIB Weatherline installation:

Another key feature is being able to install it in unpredictable weather conditions. The temporary weather protection allows for up to 180 days of exposure to the elements so building work can commence inside. It also offers enhanced thermal efficiency of the building by reducing air leakage.

So not only is this highly innovative plasterboard making a powerful purple statement across New Zealand building sites, but it’s also providing some pretty good benefits too.

GIB Weatherline Rigid Air Barrier Systems

GIB Weatherline Rigid Air Barrier Systems are suitable for use in both residential and commercial buildings and have been tested for wind speeds up to and including Extra High wind zones. It has Building Research Association of New Zealand (BRANZ) appraisal and meets the NZ Building Code requirements for rigid underlays (rigid air barriers).

GIB Weatherline Rigid Air Barrier Systems can also be used to provide passive fire protection to meet fire protection requirements including options to limit vertical fire spread.

To find out more, visit GIB Weatherline, and GIB Weatherline Rigid Air Barrier Systems, where you’ll find detailed information as well as technical literature and manuals.

GIB Weatherline Rigid Air Barrier System

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Used as a component in GIB Weatherline Rigid Air Barrier Systems, GIB Weatherline sheets feature a water and mould resistant fibreglass reinforced gypsum core and a water resistant glass fibre sheet facing for excellent water, mould and fire performance.

Can have the added benefit of providing bracing, fire and acoustic performance.

System Description:

GIB Weatherline Systems have been appraised by the Building Research Association of New Zealand (BRANZ), Appraisal No. 1048 (2019) and meet the NZ Building Code requirements for rigid underlays (rigid air barriers). GIB Weatherline System components include a range of 10mm and 13mm GIB Weatherline sheets which can be exposed to weather for up to 90 days prior to cladding installation as well as GIB Grabber Ceramic Coated fasteners, and GIB Weatherline Flashing and Sill Tapes, specially designed and tested for use in GIB Weatherline Systems.

GIB Weatherline Systems are suitable for use in both residential and commercial buildings and have been tested for wind speeds up to and including Extra High wind zone as defined in NZS 3604.

Technical information is available to allow specific design for buildings outside the scope of NZS 3604.

In the opinion of BRANZ, GIB Weatherline Rigid Air Barrier Systems, if used, designed, installed and maintained in accordance with the statements and conditions of this Appraisal, will meet, or contribute to meeting the following provisions of the NZBC:

Clause B1 STRUCTURE: Performance B1.3.1, B1.3.2 and B1.3.4. GIB Weatherline Rigid Air Barrier Systems meet the requirements for loads arising from earthquake and wind [i.e. B1.3.3 (f) and (h)]. See Paragraphs 12.1 – 12.6.
Clause B2 DURABILITY: Performance B2.3.1 (a), not less than 50 years, B2.3.1 (b), 15 years and B2.3.2. GIB Weatherline Rigid Air Barrier Systems meet this requirement. See Paragraph 13.1.
Clause C3 FIRE AFFECTING AREAS BEYOND THE FIRE SOURCE: Performance C3.7. GIB Weatherline Rigid Air Barrier Systems can be used to meet this requirement by providing passive fire and smoke protection. See Paragraphs 15.1 and 15.2.
Clause E2 EXTERNAL MOISTURE: Performance E2.3.2. When used as part of the cladding system, GIB Weatherline® Rigid Air Barrier Systems will contribute to meeting this requirement. See Paragraphs 16.1 and 16.2.
Clause F2 HAZARDOUS BUILDING MATERIALS: Performance F2.3.1. GIB Weatherline® Rigid Air Barrier Systems meet this requirement and will not present a health hazard to people. 3.2 GIB Weatherline® Rigid Air Barrier Systems can be used to satisfy the bracing demand requirements of Section 5 of NZS 3604 which is an NZBC Acceptable Solution

See BRANZ Appraisal 1048 for full information.

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