Soudafoam FR HY is a one-component, fire retarding, self expanding, ready to use PU foam, which contains propellants that are not harmful for the ozone layer. Soudafoam FR is a PU foam with fire retardant characteristics according to the Aust Standard AS1530.4-2005 and European standard EN 1366-4. Features and Benefits Higher yield of 25% Fire resistant in a joint (EN 1366-4) for 240 minutes Excellent adhesion on all surfaces (except PE, PP and PTFE) Does not contain CFC's and H-CFC's High insulation value, thermal and acoustic Applications Perfect for the fast filling and insulating of cavities, openings, and gaps in all types of building materials. Fire and smoke retardant sealant between walls, floors and ceilings. Installation of fireproof doors and windows. Excellent acoustic properties.