Our Solvent-Based Asphalt UnderCoat provides protection in wheel wells gas tanks frames and floor pans. Produces a very tough yet flexible film with excellent adhesion and helps prevent road salt from eating away at your cars metal and/or fiberglass.Offers excellent adhesion to metal or painted surfaces. Provides economical durability plus moisture resistance and corrosion resistance all in a matte black finish. Also provides sound deadening by reducing road noise and vibration.