Products  >  Window Sill Insulation 

Products  >  Window sill insulation boards

Window sill insulation board

Wedge shaped insulation board for window sill application

Areas of application

For installation under window sills as a secondary weathering protection. Hydrophobic Wood fibre board with directly applied, diffusion open and weather repellent membrane.


• Reliable protection from wind, driven rain and snow
• Robust safety for window connections in timber construction
• Particularly easy to install
• Available in standard lengths and widths

Sizes and Packaging information

Stocked size: 140mm (Width) x  20mm (Thick) x 1350mm (Length)

Price:  $38.00 / piece 

For any other size, please contact us for prices

Minimum order quantities: Pack 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