The Soudal Trade Gap Filler Foam Genius is a moisture curing, polyurethane expanding foam for all general purpose gap filling. The foam adheres to most common building materials and is resistant to water, heat and ageing. It offers excellent thermal and acoustic insulation values. Once cured, it can be cut, sanded, plastered and painted or even covered with sealant, paint or plaster. The Genius Gun is a patented trigger mechanism is 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.