Products  >  Rigid Insulation Sarking and Sheathing panels

Rigid insulation panels

T&G rigid sarking & sheathing boards for external wall and roof applications

Areas of application

Rigid insulation sheathing & sarking boards from Steico (T&G on all 4 sides) that can be installed as a protective external skin of a building envelope. It provides an air-tight, water resistant, insulated layer as well as providing structural strength.  Certain boards are also suitable for a natural Lime based or Earthen render.


The insulation sheathing & sarking panels can be fixed to timber framing, CLT, or masonry walls.  The insulation boards can also be used over roof rafters for pitched or flat roofs. 


• Insulating sheathing and sarking board

​• Can be rendered or cladded over
• Reduces thermal bridging through the structure
• Water resistant, acts as a sarking board

• Tongue & Groove system prevents air leaks
• Breathable, Air tight, Water resistant,  system
• Good fibre resistance

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

Board sizes & Packaging information

Thicknesses of 20mm - 240mm are available. 
Please contact us for more information

Prices & R values

40mm board [R -0.80]  $27.50 /m² inc. GST

60mm board [R -1.25]  $42.50 /m² inc. GST

Thickness up to 240mm available. Please contact us for prices.

Minimum order quantities: Pallet quantity

Sales terms + Delivery Options:  Learn more here

 Technical Specifications

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

Our natural wood fibre insulation partner: Steico

© 2020 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 to all regions: NSW, Victoria, Queensland, ACT, WA, SA, Tasmania