Why wrap your house with a piece of paper when you can build so much better with IBS RigidRAP. Better bracing, air control, moisture control and you can work inside the house during construction which speeds up your move in date.

IBS RigidRAP® 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. It has been manufactured specifically for New Zealand, for use as a bracing element and/or rigid air barrier. IBS RigidRAP® is the only dual layer rigid air barrier system available in New Zealand and comes laminated with a BRANZ appraised watertight wall underlay.

As designers, builders and homeowners move towards more sustainable and durable materials and systems, the benefits of IBS RigidRAP® are becoming more relevant.

The product is lightweight, easy to cut nail or screw, and can be exposed to the weather for up to 90 days.

IBS RigidRAP® replaces the traditional building paper wrap to above all support a healthier, stronger home.


  • Internal or external wall bracing
  • External wall wrap – rigid air barrier
  • Temporary weather cladding
RigidRAP-Corner RigidRAP-4 RigidRAP-2 RigidRAP-1 RigidRAP-3

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 8 14.9 RRAP082412 09421028769716
2745 x 1196 x 8 16.8 RRAP082712 09421028769723
3050 x 1196 x 8 18.6 RRAP083012 09421028769730

• Reduced building time and rigid structure
• Provides rapid moisture protection of the building
• Allows for interior construction to continue
• Provides a greater level of site security
• Reduces structural timber movement
• Provides both structural support
• Provides weather tightness and an airtight building or home
• CodeMark Certified (CM70035)
• Hard-wearing exposure tested by SCION New Zealand (90 days exposure)
• Meets all requirements of the New Zealand Building Code (NZBC)

How to install RigidRAP?

You can download the installation guide on this page.

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.

How do I join at mid-floors?

You must use a Z flashing if joining RigidRAP at mid floor level. For all other horizontal joins we recommend 150mm flashing tape.

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 be left before cladding?

You can leave outside in the weather for up to 90 days before cladding.

Can I direct fix to RigidRAP?

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 on steel frames?

No, but you can use IBS RigidRAP-XT. Full details are on our website.

What certification does RigidRAP 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.