Fire Rated Expanding Foam – B1 Premium 4hr Fire Rated – Hand Held

Soudafoam FR is a B1 fire rated expanding foam in a hand-held aerosol can, designed for applications where a basic gap-fill simply won’t cut it. This is a single-component polyurethane foam with no mixing, no cartridge gun required, and a fire performance that has been independently tested to BS 476: Part 20 and EN 1366-4. In the right configuration, it achieves up to 360 minutes of fire resistance — that is four hours, for anyone who has been on site all week and lost track of what day it is.

The hand-held format makes it straightforward to use on the go. Shake, apply, done. It works in all directions from the can, which matters when you are on your back filling a cable penetration in a ceiling void. The foam expands to fill cavities thoroughly, bonds well to masonry, concrete, timber, and most other common substrates, and sets to a stable, non-shrinking cell structure once cured. No post-expansion, no gaps appearing later.

Where B1 Fire Rated Expanding Foam Gets Used

Fire-rated foam earns its place wherever building regulations require passive fire protection at service penetrations or structural junctions. It is a different product to standard foam, and it should be treated that way on site. This is not a draught-sealing foam dressed up in fire-retardant language. The tested performance figures reflect specific application configurations, so it is worth reading the enclosed test table before specifying it for a fire compartment.

Thermal and Acoustic Performance

Beyond the fire rating, Soudafoam FR also provides useful thermal insulation and acoustic damping. It is commonly used around window and door frames in partition walls, at junctions between walls, floors and ceilings, around pipe and cable entries, and anywhere that both fire stopping and insulation contribute to the build performance. The propellants used are CFC and HCFC-free, which keeps it on the right side of environmental regulations. Cured foam can be painted over once fully set, provided UV-exposed surfaces are top-coated with a compatible sealant.