Sisalwool works with the building, not against it. It’s breathable, hygroscopic and safe for solid wall retrofits, listed buildings, and low-intervention conservation projects.

From barn conversions to winter gardens, Sisalwool fits the brief where exposed materials, low-embodied carbon, and natural finishes are required. It friction-fits easily, performs quietly, and looks rustically beautiful when left visible.

A blend of sheep’s wool and sisal fibres, Sisalwool is non-toxic, compostable, plastic-free and locally made. We use up-cycled clothing off cuts, such as Harris Tweed and partner with circular supply chains across the UK.