Moisture curing, polyurethane expanding foam, specifically developed for filling gaps around window and door frames. Adheres to most frame materials; PVCu, aluminium and wood. Resistant to water, heat and ageing. Excellent thermal and acoustic insulation values. Can be cut, sanded, plastered and painted after full cure. Not UV resistant, cover once cured with sealant, paint or plaster. Genius Gun® is a patented trigger mechanism, designed for easy use and single-handed operation. The re-sealable applicator enables the product to be re-used for up to 6 weeks after first use.