Intumescent-Impregnated Fireproof Sponge (Envirograf)

Fireproof sponge impregnated and coated with intumescent material. It is very flexible yet remains stable in small and large apertures alike, so it can be packed into irregular openings.

The sponge does not burn in a fire, it simply chars, and the intumescent coating closes the gap to form a passive fire-stopping barrier. It is used on expansion and movement joints, glass screen walls, metal cladding, modular buildings and service penetrations.

• 1 hour at 30mm depth into the wall, 2 hours at 40mm
• Thicknesses from 10mm to 60mm
• Black

Technical documents

Envirograf publish the technical data sheet and safety data sheet for this product on their own site, where the current revision is always shown. Envirograf technical documents