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fire-resistant mounting foams are used for joints and openings that need to be filled with foam carrying a declared fire-resistance class. This subcategory contains B1 professional polyurethane foam for an applicator gun, used around fire barriers, building structures, door and window blocks, gaps and cavities.
What fire-resistant foam helps with
- filling installation openings in fire barriers and building structures;
- sealing and installing door and window blocks;
- filling cracks, gaps, cavities and areas around pipes in voids;
- additional water, sound and thermal insulation of joints within the material’s intended use;
- jobs where B1 fire resistance and application according to the manufacturer’s instructions matter.
When to choose this subcategory
- when regular mounting foam is not suitable because the joint has fire-resistance requirements;
- when applicator-gun use is needed for more controlled dispensing;
- when the joint is around door, window, utility or construction connections;
- when the cured layer will need later protection from UV exposure;
- when the project or instructions call for a material with confirmed fire resistance rather than a universal foam.
What to check before application
- application temperature, can temperature and ambient humidity;
- surface preparation: removal of dust, dirt, grease and poorly bonded particles;
- joint filling with allowance for secondary foam expansion;
- tack-free time, curing time and full polymerization before further work;
- UV protection for cured foam and cleaning of fresh residues before curing.