Airtightness improves the energy efficiency of a building by controlling air flows and preventing heated or cooled air from escaping or outdoor air from seeping in through cracks and crevices. Good airtightness also increases the feeling of comfort (less draught), ensures a proper and controlled ventilation and optimal insulation.

Especially around windows, air leaks can cause a lot of heat and energy loss. For a durable seal and to limit unwanted airflows, insulation by itself (such as PU foam or mineral wool) is not enough. For optimal airtightness, an airtight tape or coating that can withstand joint movements should be applied to seal the interior side. On the outside a weatherproof vapour permeable seal is recommended.

With Soudal Window System (SWS), Soudal offers a total system solution for the professional sealing of windows and doors. The SWS range includes joint sealants, PU foams, pre-compressed tapes, self-adhesive tapes and liquid membranes which can all be perfectly combined. The products were developed in cooperation with leading window and masonry manufacturers and can be used for all types of joinery: alu, wood and PVC. SWS not only ensures an optimum airtightness, but also insulation and protection of the building materials against weather influences (rain, UV and wind).

For more information please visit: https://www.soudal.com/