Special characteristicsThe ultimate in durability, flexibility, acoustic + thermal insulation AND airtightness! This elastic PU foam absorbs up to >50% joint movement, thus guaranteeing sustainable sound and thermal insulation. Acoustic insulation RST,w=60 (-1;-4) dB. Low expansion formula, fire class B2. Can be applied at temperatures down to -10 degrees Celsius. In combination with SWS products, suitable for passive construction. Colour blue. ApplicationsFor thermal and acoustic insulating filling of connection joints around PVC, wooden, or aluminium door and window profiles. For insulating and filling expansion joints. For filling joints between wall panels, around pipe penetrations, and hollow spaces. Included as standardFlexifoam Gun 750ml