POLYURETHANE SPRAY FOAM For Sale4 weeks ago - Services - Karachi - 25 views
Polyurethane spray foam is applied on the cracks and inside of the structure which later expands 30 times it original volume. This forms a hard rock like structure which provides protection form leakages and extra insulation. One good thing about polyurethane is that it is light weight which is really negligible on the standing structure.
After the application of the spray a second layer of protective elastomeric coating is applied which provides a proper shield against weather hazards.