Johnstone's Trade Black Bitumen is a corrosion-resisting, waterproofing paint formulated for exterior use on a variety of substrates, including metal, stone and concrete surfaces. Once dry, it provides a waterproof and weather-resistant coating that protects metal and concrete from corrosion. Its anti-corrosive formulation provides excellent water resistance, and the product will cover approximately 8-10 square metres per litre depending on the nature and porosity of the surface being painted. Johnstone's Trade Black Bitumen is recoatable after 24 hours under normal conditions and should not be overheated with other solvent-based paints as bleeding may occur. The product may weather to a matt finish, but this in no way impairs the protective qualities of the paint.
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