Description

BGC Durabarrier™ Rigid Sheathing/Air Barrier is a sealed fibre cement sheet designed for use as a rigid wall underlay behind wall cladding systems and as a bracing system to resist wind and earthquake loads on timber framed buildings.

Scope

BGC Durabarrier™ Rigid Sheathing/Air Barrier has been appraised for use as a rigid wall underlay and temporary weather-protecting sheathing on timber framed buildings within the following scope:

• the scope limitations of NZBC Acceptable Solution E2/AS1, Paragraph 1.1; and,
• with absorbent wall claddings directly fixed to framing; and,
• with non-absorbent wall claddings directly fixed to framing with a flexible wall underlay over the Durabarrier™ Rigid Sheathing/Air Barrier and,
• with absorbent and non-absorbent wall claddings installed over an 18 mm minimum drained cavity; and,
• with masonry veneer in accordance with NZBC Acceptable Solution E2/AS1; and,
• situated in NZS 3604 Wind Zones up to, and including Extra High.

BGC Durabarrier™ Rigid Sheathing/Air Barrier has also been appraised for use as a rigid wall underlay and temporary weather-protecting sheathing for buildings within the following scope:

• the scope limitations of NZBC Acceptable Solution E2/AS1, Paragraph 1.1; and,
• constructed with timber framing complying with the NZBC; and,
• situated in specific design wind pressures up to a maximum design differential ultimate limit state (ULS) of 2.5 kPa.

BGC Durabarrier™ Rigid Sheathing/Air Barrier has also been appraised for use as wall bracing systems for timber framed buildings within the scope of NZS 3604.