Gunfoam NBS

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Gunfoam NBS

Zettex Gunfoam NBS is a durable and fast-curing one-component insulation and mounting foam. Developed for sealing and filling joints and connecting building materials. The foam cures under the influence of moisture. Zettex Gunfoam NBS has an excellent adhesion to most building materials such as stone, concrete, metal and various plastics (styrene, PU rigid foam, polyester, rigid PVC)


•Fast drying 
•High yield 
•High product density 
•High insulation value 
•Can be used on any substrate

Spray can 750 ml
Sealing joints between partition walls, ceilings and floors.
Penetrations of pipes and conduits through walls and floors. Joints around door and window frames. Not suitable for underwater applications and not to be used to fill large closed spaces. For wider joints and joints deeper than 5 cm, apply the foam in several layers. Wait 15-30 minutes between layers.
All surfaces must be free of dust and grease.
Features Specification
Propellant gas No CFCs or HCFCs
Application temperature 5°C to 35°C optimal: +15°C to +20°C)
Density of cured foam 20 – 30 kg/m³
Skin formation time 8 – 12 min
Time before cutting 50 – 100 min
Thermal conductivity coefficient 30 – 35 mW/m.K
Thermal resistance -40°C / +90°C
after curing, short duration: up to +140°C)
Fire class according to DIN4102-part 1 B3
Shelf life 12 months after filling date
Degree of fill in joint 50% - 60%
Yield Approx. 45 litres
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