(1) Bitumen based primer
Before applying covering materials to porous roof surfaces, bitumen primer is used to prime and seal the surfaces with high penetration and low viscosity.
Bitumen primer helps bituminous waterproofing systems and sheet coverings adhere by sealing permeable substrates.
It can be used on a variety of surfaces, including lightweight concrete screeds, slate, asbestos cement, metal (mild steel, zinc, and lead), and concrete.