Weatherline Delivers a Sustainable Option for Sustainably-Minded Designer

Winstone Wallboards work closely with architects and designers, developing and supplying products that are constantly evolving and breaking new ground. The commitment to sustainability makes their products a perfect fit for architectural designers such as Christchurch based Fiona Macpherson of Fiona Macpherson Architecture, who is passionate about creating healthy, high-performance homes using sustainable local materials.

As an architectural designer committed to using non-toxic materials, she liked the fact that GIB Weatherline didn’t need to be treated and could be recycled. And while non-toxic materials can often be difficult or more costly to install, GIB Weatherline proved to be affordable and easy to use, even for first-time users. She also described the colour as a standout.

But Fiona wasn’t the only one who was impressed. Project builders, Steve Pomeroy Builders, loved the fact that only a craft knife was needed to score and snap. Even more importantly, GIB Weatherline contributed to the bracing and the speed of the build, enabling early close-in so that builders could keep working regardless of the weather conditions, helping mitigate delays.

For an architectural designer who designs homes not to meet the building code, but to exceed it, Fiona says products like GIB Weatherline are invaluable.

Not only has Fiona completed the Living Building Challenge training, but she is also a strong advocate of Declare, considered to be the most advanced sustainability certification in the built environment. Winstone Wallboards is transparent and honest about their environmental position and has Declare certification* for a range of its plasterboards.

“Using GIB Weatherline on our project made perfect sense — we have been searching for a non-toxic, easy to install rigid air barrier,” she says. “I also love that [Winstone Wallboards] GIB are local and convey they are working hard on being more sustainably responsible. So am I.”

*Visit gib.co.nz/certifications/ to view the full list of Winstone Wallboards Declare certificates.

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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