Soudal Soudafoam Window & Door SWS (Gun Grade) (750ml gun-grade canister) Seal Out Sound. Lock In Heat. High-performance polyurethane expanding foam for sealing around windows, doors, and construction joints. Based on FLEXIFOAM® technology, it cures to form a flexible, airtight seal with strong primerless adhesion. Delivers excellent thermal and acoustic insulation. Rapid curing and easy to apply with a foam gun - ideal for durable, energy-efficient, and soundproof installations. Features & Benefits 3x more flexible than standard PU foam – ideal for dynamic joints Airtight and water vapour open – helps prevent condensation Excellent sound insulation – up to 60 dB (EN ISO 717-1) High thermal insulation – 34.5 mW/m·K (DIN 52612) Precise application – low expansion, fast curing, and easy to control What is Soudal Window System (SWS)? The primary function of SWS MIDDLE products is to improve the acoustic and thermal performance of the window or door connection joint. These products help reduce the transmission of noise and vibrations through the building envelope while limiting thermal exchange between the interior and exterior. This results in enhanced indoor comfort and lower energy consumption to maintain the desired temperature.
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