Karnak #83 Fibered Dampproofing is prepared to semi-mastic consistency for easy application, by brush, spray or roller. Karnak #83 Fibered Dampproofing is a solvent based asphalt compound, manufactured with selected asphalts, mineral fibers, stabilizers and mineral spirits. This material is a multi purpose, cold applied protective damp proofing that dries to a tough, durable and flexible coating that gives excellent performance over a wide range of temperature and conditions. This product exhibits excellent resistance to acids and alkalies in the soils and in the environment.