APP/SBS Modified Roofing

APP membranes provide superior tension strength while maintaining critical flexibilityā€”even in the coldest environments.

Modifying premium-grade asphalts by combining these asphalt types with non-woven polyester or glass reinforcements, creates a waterproofing system with good strength, elasticity and weatherability.

APP membranes (coated with a blend of asphalt and atactic polypropylene) are torch-applied. SBS is a rubberized modifier that increases the overall performance of the sheet by providing excellent elongation and recovery characteristics. SBS modifiers extend the service range of the product, so that it can be handled in cooler temperatures without shattering or cracking and without softening in warmer temperatures to the point where it begins to flow. SBS membranes are applied with hot asphalt or cold application cement.