IBS RigidRAP®-XT is an 8mm OSB3 (Oriented Strand Board) which has been manufactured specifically for New Zealand, for use as a bracing element and/or rigid air barrier. IBS RigidRAP-XT is the only triple layer rigid air barrier system available in New Zealand and comes laminated with a watertight wall underlay.
RigidRAP-XT is not only a temporary weather cladding, but it also provides bracing. IBS RigidRAP-XT has a 10mm lightweight rigid foam fixed to the rear of the board. This gives IBS RigidRAP-XT a R-Value of 0.39.
It replaces the traditional building wrap, and when compared to similar products it is more cost effective, easy to install and is lightweight.
As an OSB3 panel manufactured in accordance with EN13986:2004, it is suitable for use in humid conditions where the panel in-service moisture content does not exceed 20%.
Compliance with the NZ Building Code (NZBC) is established through Product Certification (CodeMark).
Compliance with NASH standard Part Two: ‘Light Steel Framed Buildings’ (or NZS 3404:2009 - Steel Structures) IBS RigidRAP-XT meets all the requirements of Table 23 of E2/AS1 from the compliance document for the NZ Building Code (NZBC).
Reduces building time
Lightweight material, simple and easy to install
Provides rapid moisture protection of the building
IBS RigidRAP-XT may be used as a bracing element within the following scope:
In wind zones:
Up to and including extra high as defined in NASH standard Part Two 2019 “Light Steel Framed Building”
Up to 2.5 kPa ULS where the building is specifically engineered
In conjunction with concrete and timber subfloor applications that comply with the NZBC
With all cladding types that comply with NZBC
In conjunction with a drained and ventilated nominal 20mm cavity system
With aluminium joinery complying with the NZBC. IBS RigidRAP-XT may be used as a bracing element in existing buildings, however in these cases IBS makes no claim as to the bracing value that will be achieved
Existing concrete and timber sub-floor structures where the designer and/or installer have assured themselves that the existing building is suitable for the intended building work
Scope of use as a rigid air barrier
Applied to the outer face of the exterior framing, IBS RigidRAP-XT will minimise the pressure difference across the wall construction, thereby forming part of a weathertight external envelope. When installed in accordance with Section 4, IBS RigidRAP-XT performs the function of a rigid air barrier with bracing capacity.
Limitations on Use
Allow a minimum of 4mm between panels both vertically and horizontally to accommodate dimension movement
Maximum spacings of wall studs must not exceed 600mm centres
A proprietary ‘Z’ flashing must be installed at mid floor level where IBS RigidRAP-XT is installed on multi levels
For wall heights greater than 3050mm horizontal wall joints are permitted, provided the panel joint is over solid blocking of the same gauge as the studs.
Other than mid floor level, all joints (vertical and horizontal) must be sealed with an IBS approved self-adhesive flashing tape as specified in section 3.7. IBS recommends 150mm flashing tape or a proprietary Z flashing for horizontal joints
Steel fixings and fastenings must be in accordance with table 4.1, NZS 3604: 2011
Do not install IBS RigidRAP®-XT if the building paper has delaminated from the OSB sheet
When specifying IBS RigidRAP-XT as a bracing element, the designer must take into account site specific conditions and the building with respect to, but not limited to, the following:
Environmental (exposure) zone
Wall bracing table for wind and EQ demand
Structural design loads
Structural framing requirements
Preparation of substrate
Other materials likely to affect the performance of IBS RigidRAP-XT
Statement of Building Code Compliance
If designed, used, installed and maintained in accordance with the scope, this product will meet the following provisions of the NZBC: