Fire Retardant Pu Foam is more suitable for high temperature region and places. This is a Pu Foam can impede the pread of flames and smoke helping to slow the pread of these destructive elements during a fire.It can be applied where fire retardant properties are required. Such as electrical wires running through wall studs. All in all, it not only fills seams, but also improves safety and comfort in your home. It is a reliable product.