Description

GIB Weatherline® is an exterior-grade glass-fibre fleece wrapped, modified gypsum core sheet material for use as a rigid wall underlay and temporary weather protecting sheathing.  The product is also for use in wall bracing and fire-rated systems.

Scope

Buildings up to 10 m High

GIB Weatherline® Rigid Air Barrier Systems have been appraised for use as a rigid wall underlay and temporary weather-protecting sheathing on buildings within the following scope:

• constructed with timber framing in accordance with the scope limitations of NZBC Acceptable Solution E2/AS1, Paragraph 1.1; or
• constructed with steel framing in accordance with the scope limitations of NASH Building Envelope Solutions, and;
• with wall claddings installed over an 18 mm minimum drained cavity; or
• with masonry veneer in accordance with NZBC Acceptable Soltion E2/AS1; and
• situated in NZS 3604 Wind Zones up to and including Extra High, or;
• when used in conjunction with wall cladding systems suitable for use with maximum wind pressures for structural and weathertightness design of 2.5 kPa ultimate limit state (ULS).

Buildings up to 25 m High

GIB Weatherline® Rigid Air Barrier Systems have also been appraised for use as a rigid wall underlay and temporary weather-protecting sheathing on buildings within the following scope:

• buildings with a building height not exceeding 25 m; and,
• constructed with timber or light-gauge steel framing complying with NZBC, and;
• with inter-storey deflections designed for up to height/180 of horizontal in-plane movement during seismic service limit state (SLS) events (based on a 3 m inter-storey height); and, 
• with wall claddings installed over an 18 mm minimum drained cavity; and,
• for use with maximum wind pressures for structural and weathertightness design of 2.5 kPa ULS for 10 mm thick sheet and up to 4.0 kPa ULS for 13 mm thick sheet, when used in conjunction with compliant wall cladding systems.

 Bracing

• GIB Weatherline® Rigid Air Barrier Systems have also been appraised for use as wall bracing systems for timber-framed buildings within the scope of NZS 3604.

Fire Resistance Rated (FRR) Construction

• GIB Weatherline® Rigid Air Barrier Systems have also been appraised for use as non-loadbearing and loadbearing fire-rated wall systems for timber framing and non-loadbearing steel-framed construction. This Appraisal also coveres the use of  GIB Weatherline® for fire-rated soffits and fire protection of columns and beams.