Products  >  Rigid Insulation boards for external walls & roofs

Rigid insulating boards

Sarking,  sheathing & insulating boards for external walls and roofs


These rigid boards from Steico can be installed as a protective skin over the building envelope. They provides an air-tight, water resistant, thermal break as well as a sound proofing layer.  The boards can be fixed over timber framing,  CLT's, masonry walls,  metal frames & over roof rafters. suitable for a render finish.

• Water resistant (no additional membrane needed)

​• Reduces cold & heat bridging through the structure

• Tongue & Groove on all 4 sides preventing air leaks
• Vapour open allow building fabric to breath
• Excellent fire resistance

• Good sound proofing qualities
• Environment-friendly, fully recyclable
• Provides a green architectural solution

• Suitable for a render finish

Thickness / R values / Prices (GST inclusive)

40mm board [R value -0.80]  $32.50 /sqm  (GST inclusive)

60mm board [R value -1.25]  $42.50 /sqm  (GST inclusive)

Stocked thicknesses: 40 & 60mm / Other thickness up to 240mm available.

Board dimensions typically  2200mm x 750mm

Minimum order quantities: Pallet quantity

Sales terms + Delivery Options:  Learn more here

Technical information
Additional info

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Our natural wood fibre insulation partner: Steico


Benefits of Natural Wood Fibre Insulation

Excellent summer heat protection

Excellent winter protection 

Weather tight and breathable

Good sound protection

Excellent fire protection

Easy to install with regular tools

© 2021 Insulate Naturally 

Insulate Naturally is an Australian supplier of truly green building & insulation materials.
We specialise in natural, ecological, and healthy wood fibre insulation products for the home. 
We deliver throughout Australia: NSW, Victoria, Queensland, ACT (Canberra), WA, SA, Tasmania.
We can also ship to New Zealand.