Increasing Construction Efficiency with Rigid Air Barrier

This is due to the fact that building underlays alone do not provide the required protection from the elements.

An economical solution to speed up the completion of residential building work is to replace the traditional building wraps with HomeRAB PreClad Lining. Installed 3.5mm thick, HomeRAB can be left exposed to external elements for 90 days and also provides enough structural bracing on its own to meet the general bracing requirements necessary for the external walls of a house.

“This is the most practical solution I have seen that provides us bracing and enhanced weather protection, whilst maintaining significant economies against alternative products. We can start working within the building soon after we have enclosed it with HomeRAB PreClad Lining,” says Steve McMillan of Carpe Diem Construction, a group home builder in Christchurch.

"We can now save up to 10 days per house and can also stick to our building schedules as the work is not affected by any delays. This was highlighted in our recent Kaiapoi Smarter Small Home build where construction progressed quicker than neighbouring building projects.”

Dale Geck from ProClad adds, “the installation of cladding over HomeRAB PreClad Lining is a breeze – it doesn't warp or distort, no matter the weather, therefore it is our preferred rigid air barrier.”

HomeRAB PreClad lining is a breathable, water repellent rigid air barrier that is suitable for use on houses up to and including VH wind zones.

HomeRAB Pre-Cladding

James Hardie

View Product

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

CodeMark

Categories

Popular Products

Popular Brands

Features

Sections

This Month

Caesarstone: Redefining Surface Excellence with Crystalline Silica Free Formulations

NZ's Largest Mass Timber Office Building: The Sustainable Timber Engineering Behind 90 Devonport Rd

Terra Lana Insulation for a World-Leading Hospital Targeting Zero Carbon Certification

SECTIONS

Exploring Options for Self-certification of Building Work

Complaints Not Upheld

From Windows to Warm Roofs: How Can We Make the New Insulation Standards Work?