Scope of use as an external wall bracing

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

Building scope

• New buildings.
• 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.

• 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
• Wind zone
• Wall bracing table for wind and EQ demand
• Structural design loads
• Structural framing requirements
• Preparation of substrate
• External envelope
• Other materials likely to affect the performance of IBS RigidRAP-XT

If designed, used, installed and maintained in accordance with the scope, this product will meet the following provisions of the NZBC:

• B1 Structure: B1.3.1, B1.3.2, B1.3.3(a, b, f, h), B1.3.4
• B2 Durability: B2.3.1(a), B2.3.2
• E2 External moisture: E2.3.2 (contributes to), E2.3.7
• E3 Internal moisture: E3.3.1 (contributes to)
• F2 Hazardous building materials: F2.3.1
• H1 Energy efficiency: H1.3.1 (contributes to), H1.3.2E (contributes to)

IBS RigidRAP-XT meets all the requirements of Table 23 of E2/AS1 from the compliance document for the NZ Building Code (NZBC).

• OSB3 panel manufactured in accordance with EN13986:2004
• Compliance with NASH standard Part Two: ‘Light Steel Framed Buildings’ (or NZS 3404:2009 — Steel Structures)