EVERBUILD® B2 Gun Grade Fire Foam is a quick-setting one-part polyurethane foam with fire resistance properties. The foam expands on application 1.5 – 2 times its original volume. Once cured, the foam can be cut, sawn or plastered over after only one hour providing the working temperatures (can and surfaces) are between +5 °C to +25 °C, ideally 20 °C.
- High degree of fire rating: slows down the passage of flames and smoke in comparison to standard B3 grades.
- Quick setting – can be cut, sawn or plastered in 1 hour.
- Economical in use – expands up to 50 times its original can volume.
Usage
Filling
- Gaps around window and door frames
- Deep joints prior to applying sealant or plaster
- Irregular gaps in stone, brick, concrete or plaster
Fixing Â
- Door frames
- Timber structures
- Windowsills and thresholds
- Window frames
Insulating
- Behind cladding to exterior walls
- Behind soffit and barge boards
Advantages
- High degree of fire rating: slows down the passage of flames and smoke in comparison to standard B3 grades.
- Quick setting – can be cut, sawn or plastered in 1 hour.
- Economical in use – expands up to 50 times its original can volume.
- Fills irregular and broad gaps where most conventional fillers would fail.
- Possesses insulating and sound deadening properties.
Expansion 40 litres (750 ml can) Cell Structure Medium Fine


