SILTI FOAM is a triple-expanding polyurethane single component sealing foam. At ambient temperature hardens to a lower density on reacting with atmospheric moisture. After curing it shows excellent adhesion to metal door/window frames, wood, concrete, plasters, glass, painted surfaces, specific plastics, etc. It has outstanding thermal insulation features and can be used to insulate hot/cold water piping, cooling systems, etc. The microcellular structure of the foam exhibits a closed-cell structure, therefore post-cured foam is water-resistant. SILTI FOAM is very easy to extrude and is well suited for sealing low movement high volume gaps, cracks, and holes that are difficult to fill with any other form of ordinary sealant.