Structural Bracing, Weathertightness and Early Close-in with HomeRAB Pre-Cladding

David Reid homes are known for their quality and attention to detail, so to Nigel it seemed logical to use HomeRAB Pre-Cladding instead of building wrap.

"When I first encountered HomeRAB, I liked the fact that it gives you extra bracing. You're not just relying on the plasterboard. In my mind, better bracing means a better house."

In addition to extra bracing, Nigel says HomeRAB Pre-Cladding contributes to the speed and success of a David Reid building project in three other ways — weathertightness, early close-in and reduction of exterior fastenings.

"Our first project with HomeRAB was in a windy spot on the coast. Using pre-cladding board instead of wrap helped us to get weathertight sooner. While it takes slightly longer to install HomeRAB, it saves time in other ways. Early close-in means you can let other tradies start work sooner."

As a Dunedin-based builder, Nigel is also a fan of the additional thermal insulation that comes with HomeRAB Pre-Cladding. Homeowners in the South Island are always interested in having a warmer home that costs less to heat.

"Better thermal properties certainly help in this part of the world."

HomeRAB Pre-Cladding

James Hardie

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HomeRAB™ Pre-Cladding is a cost-effective robust pre-cladding offering resistance to gusting winds to reduce draught and keep homes warm creating comfort inside.

NZ Made

HomeRAB Pre-Cladding is suitable for the exterior of almost all residential buildings including those in Very High wind zones
It is fixed directly to the framing and then vertical joints are sealed over the face
HomeRAB Pre-Cladding is suitable for use behind all James Hardie claddings or alternative claddings such as brick, and timber weatherboard

In the opinion of BRANZ, James Hardie Rigid Air Barriers, 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. James Hardie Rigid Air Barriers meet the requirements for loads arising from earthquake and wind [i.e. B1.3.3 (f) and (h)].
Clause B2 DURABILITY: Performance B2.3.1(a), not less than 50 years, B2.3.1(b), 15 years and B2.3.2. James Hardie Rigid Air Barriers meet these requirements.
Clause E2 EXTERNAL MOISTURE: Performance E2.3.2. When used as part of the cladding system, James Hardie Rigid Air Barriers will contribute to meeting this requirement.
Clause F2 HAZARDOUS BUILDING MATERIALS: Performance F2.3.1. James Hardie Rigid Air Barriers meet this requirement and will not present a health hazard to people.

RAB Board is an Acceptable Solution rigid wall underlay material in terms of compliance with NZBC Acceptable Solution E2/AS1, Table 23.

This is an Appraisal of an Alternative Solution in terms of rigid wall underlay material for HomeRAB Pre-Cladding and an Alternative Solution installation method for both products in terms of the New Zealand Building Code compliance.

BRANZ Appraised

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