Description

Cemintel Rigid 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 and steel-framed buildings.

Scope

Timber Framing

1. Cemintel Rigid Air Barrier™ is 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 absorbent and non-absorbent wall claddings installed over a 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

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

Steel Framing

3. Cemintel Rigid Air Barrier™ is appraised for use as a rigid wall underlay and temporary weather-protecting sheathing on steel framed buildings within the following scope:

• the scope limitations of NASH Building Envelope Solutions, Paragraph 1.1 for steel framed buildings; and,
• with absorbent wall claddings directly fixed to framing; and,
• with absorbent and non-absorbent wall claddings installed over a drained cavity; and,
• with masonry veneer in accordance with NASH Building Envelope Solutions; and,
• situated in NASH Standard Part Two, Wind Zones up to, and including Extra High

Specific Design

4. Cemintel Rigid Air Barrier™ is also appraised for use as a rigid wall underlay and temporary weather-protecting sheathing for  buildings within the following scope:

• constructed with timber or steel framing subject to specific engineering design; and,
• situated in specific design wind pressures up to a maximum design differential limit state (ULS) of 2.5 kPa.