Low expansion, polyurethane gun foam

KRAFT GUN FOAM 51 is self-expanding, one–component, ready to use polyurethane foam for professional use. It is fit-ted with a plastic adaptor head for use with a foam applicator gun. It has a minimal expansion after application and is easy to use. It is suitable both for internal and external use. It exhibits excellent adhesion on plaster, bricks, cementitious mortars, wood, hardboard, bitumen, gypsum, and metal surfaces. After curing it has excellent temperature variation resistance from -40ºC to +90ºC.
Uses: fixing and sealing of window and door frames, filling of cavities around pipes or insulation materials, sealing of all openings in roof constructions

» Low post-expansion
Excellent adhesion on most substrates
High thermal and sound insulation
Higher yield – Excellent filling capacities
» Excellent mounting capacities
Excellent stability
User and environment-friendly


0.75 L



  • Instructions


The canisters should be left in room conditions for 12 hours at least before use. Shake the canister for 15 seconds before use.
» Moistening of the surfaces and the uncured foam with a water sprayer improves adhesion and curing speed. The substrate should be clean and free of dust. Fit the gun on the adapter. Hold the canister upside-down and extrude the foam by pressing the valve. Gaps have to be filled partially up to 65% as the foam will expand.
» Repeat shaking regularly during application.
» Cleaning: Fresh foam can be removed directly with suit-able cleaner or acetone. After curing the surplus of the foam can only be removed mechanically. Proper cleaning of gun after each use guarantees its long life.
» Not recommended for application on Teflon, PP or silicones and for permanent immersion in water.
» Cured PU foam must be protected from UV radiation by applying a top layer of emulsion paint.


» Store canisters upright at temperatures between 5ºC and 35ºC. Shelf life of at least 12 months.
» The canisters should not be exposed at temperatures higher than 50ºC.


Μάθετε πρώτοι όλα τα νέα.