Fire Stopping - Compartment Walls,  Linear joint seals
 
Intumescent Expansion Joint is a compressible strip formed by shrink wrapping a graphite based intumescent polymer to both faces of a Rockwool core. They are supplied in one metre lengths to suit the joint to be filled. The width of the product is dependent on the fire rating required.
 
Intumescent Expansion Joint is simply compressed by hand and is then pushed into the space. Adjacent pieces of the product are simply butted together. There is no need to use any adhesives or intumescent sealant in conjunction with the product.
 
In a fire, the graphite based intumescent material swells to form a hard char, which prevents the passage of fire and smoke through the joint. Intumescent Expansion Joint is used to prevent fire penetration through movement joints and gaps in walls and concrete floors for a specified period up to 6 hours.