Natural insulation of your roof and walls with spray foam in Liège

WLS is Demilecinsulation !

WLS isolate your buildings and homes with a natural insulator and ecological: Demilec. Demilec insulation is achieved by spraying foam on your roof, walls, roofs and ventilated gaps. The Demilec Insulation System is a thermal and sound efficient and environmentally friendly product made in Canada.


With WLS, you effectively insulate your homes or offices in Wallonia, in the regions of Liege, Verviers, Spa, but also in the provinces of Namur, Luxembourg and Brussels.


Ecological and economic
Enjoy premium