DAP Global's Wall and Cavity Foam is a one-component spray foam that offers the versatility of traditional two-component ...

Walls 35 Cavity wall insulation fills the cavity between the outside walls with mineral wool, polystyrene beads or foam. Trapped air between fibres, beads or within foam reduces heat loss by ...

Cavity wall insulation The gap between two brick walls is filled with material that has a lower thermal conductivity than air. This is because it contains trapped air which cannot transfer energy ...