IBS RigidRAP®-XT is the only triple layer rigid air barrier system available in New Zealand with a thermal break laminated on the back of each board.

IBS RigidRAP®-XT is an 8mm OSB3 product that has been laminated with an approved building paper to give your house dual protection from the weather during your building process as well as a thermal break graphite polystyrene board on the inside making it ideal for steel frame buildings. IBS RigidRAP®-XT is not only a temporary weather cladding but it also provides bracing. The product is lightweight, easy to cut nail or screw, and can be exposed to the weather for up to 90 days.

IBS RigidRAP®-XT can be used as an external wall bracing element when used in conjunction with a specific fixing system or a thermal break for steel frames.

Intended use for IBS RigidRAP®-XT are:

  • External wall bracing element when used in conjunction with a specific fixing system
  • Thermal break for steel frames
RigidRAP-XT-Corner RigidRAP-XT-2 RigidRAP-XT-1 RigidRAP-XT-4

Order a sample using the form below.

Product Details

L x W x Thickness (mm) Weight (kg) IBS Product Code GTIN
2440 x 1196 x 18 18.2 RRAPXT182412 9421028769891
2745 x 1196 x 18 22 RRAPXT182712 9421028769907
3050 x 1196 x 18 25.8 RRAPXT183012 9421028769914
  • Lightweight board – one-man lift
  • Easy to cut, nail, screw and drill
  • Speed up construction by working inside and outside the building at the same time
  • Rapid moisture protection of the building
  • Weather tightness and an airtight building or home
  • Allows for interior construction to continue
  • Provides a greater level of site security
  • R-Value of 0.39
  • Backing board which is a 10mm lightweight rigid foam composition
  • Moisture resistant and load bearing panel
  • CodeMark Certified (CM70091)
  • Meets all requirements of the New Zealand Building Code (NZBC)
  • Hard-wearing exposure tested by SCION New Zealand (90 days exposure)

Which way do the sheets need to be installed?
All sheets should be installed vertically for bracing. Sheets can be installed horizontally if they are not used as a bracing panel.

How much gap do I need to leave between sheets?
You need to leave a 2mm gap around all sides of the sheets for expansion and contraction. This means 4mm between the sheets on all sides. Hence the sheet width of 1196mm.

What tapes do I use?
A list of all tapes that have been tested and approved is listed in our Installation Guide. All tape installation should be in accordance with the manufactures install details.

What is the nailing pattern on the sheets?
150 centres around the perimeter of the sheets and 300mm through the centres. 75mm centres on the top and bottom plate. If not used as bracing 300mm centres.

How long can the RigidRAP-XT be left before cladding?
You can leave outside in the weather for up to 90 days before cladding.

Can I direct fix to RigidRAP-XT?
Corrugated iron is the only product than can be directly fixed as this profile forms a cavity type system. Corrugated iron needs to be installed vertically when fixing directly. All other cladding products need to be fixed to a cavity system.

Can I use RigidRAP-XT on timber frames?
Yes you can, although no bracing tests have been done with timber frames. You could use as a wrap only.

What certification does RigidRAP-XT have?
IBS RigidRAP has Codemark certification.


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Order a sample

If you’d like to order a sample prior to making an order, fill in the form and let us know what you’d like. All samples are A5 size. If you require multiple samples, please contact our team directly on 0800 367 759.

Where to buy

You can also find our products from all major suppliers of building materials and hardware. Find your closest IBS merchants by clicking below.