Earthwool® Underfloor insulation with a wind-wash barrier provides a superior solution for improving the thermal performance of timber frame floors. The wind-wash barrier provides protection from air movement under the floor. Adding to the already easy to handle and install qualities of Earthwool®, the insulation can be stapled in place. Earthwool® Underfloor insulation will improve the thermal comfort and energy efficiency of the building in which it has been installed thus keeping it cool in summer and warm in winter. Super-soft to handle and install, Earthwool® is made using up to 80% recycled glass and with ECOSE® Technology, a sustainable, bio-based binder that contains no added formaldehyde.

The Earthwool® Underfloor Insulation Difference

The benefits of choosing Earthwool® insulation are:

underfloor insulation

Soft to handle – easier to install

The super-soft feel of Earthwool® insulation comes from a revolutionary, patented binder based on rapidly renewable materials.

Advanced Compression Packaging

Earthwool® insulation’s advanced compression packaging means you get up to 55% more insulation per pack and more insulation per load.

The strong poly bags in which Earthwool® insulation is packaged offer excellent protection to the insulation while in storage, guarding against dust, moisture and any accidental abuse.

Stand back as you open the bag and watch as the insulation bounces back to its intended thickness.


Earthwool® insulation comes with inherent fire performance and will not catch fire.

Resilience & Durability

Earthwool® wall batts also boast incredible resilience and durability. The insulation is completely odourless, non-hygroscopic and rot proof. The quality of manufacture of Earthwool® is so good that we offer a fully 50 year warranty.

Sustainable – made using recycled glass

Earthwool® insulation is made using recycled glass and sand making it a great choice for environmentally conscious customers.

ECOSE® Technology – no added formaldehyde

Earthwool® insulation made with ECOSE® Technology benefits from a binder which has no added formaldehyde and is based on renewable, bio-based materials instead of traditional petro-based chemicals.

Indoor air comfort

Earthwool® is certified by Eurofins as an outstanding material according to the VOC (Volatile Organic Compounds) Indoor Air Quality emissions regulations.

Contact Earthwool® Today

Interested in Earthwool® internal or external wall insulation? No matter what your insulation needs Earthwool® is sure to have a product to suit.

Use our wizard to work out which product is best for your project.