Bitumen Felts for Water-Proofing and Damp-Proofing.
Bitumen Felts for Water-Proofing and Damp-Proofing. Bitumen (asphalt or coal-tar) is a mixed substance which is made up of organic liquids that are highly sticky, viscous, and waterproof, whereas ‘Felt‘ is an unwoven fabric made by matting fibers under pressure.
