Recently, our crew completed foaming in some massive ducts in Downtown Los Angeles. What a view!
Sprayed polyurethane foam is applied as a liquid to fill cracks and crevices. It then expands approximately 30 times its original liquid volume to form a hard, closed cell monolithic roof surface.
The polyurethane foam dries within seconds after applied to the roof surface. Its expansion results in a weather tight roofing membrane that is fully adhered to the substrate.
Because of polyurethane’s lightweight it adds little additional weight to the structure and is often used in repair situations applications.
Polyurethane foam has a history of more than 35 years as a maintainable roofing medium. It adds excellent insulation value to the structure and utility bills can reflect the difference.