Thermosills are used for installation under new windows. Their thick insulation layer provide the best result in prevention of heat loss.

Sills are an innovative solution for the renovation of already existing windows. A high density expanded polystyrene is the core of our products which is a perfect insulation material. The coat is made out highly flexible mass which enables a waterproof finish with addition of a mesh it secures the long-lasting longevity of our products.

A large proportion of our sills sales are from custom profiles. Please feel free to contact us with your sketches/projects.

Beneath you are going to find great quality window sills for both EWI and new build market on the UK and Ireland territory.