The Protective Coating multi purpose heavy duty waterproof epoxy grey paste in 2 parts works as a bonding agent, sealant as well as a filler for many indoor and outdoor applications. It bonds materials such as fiberglass, wood, concrete, metals, brick, glass, ceramic or rubber. It also seals oil, gas and water tank leaks and plumbing and masonry cracks. Finally, it fills holes, castings and molds. It is recommended to use denatured alcohol to clean surfaces before applying the epoxy paste. It is necessary to use separate knives to remove amount needed, than to mix equal parts A and B on flat clean surface until uniform color is achieved. When mixed, components A and B react to form a bond of great strength. After the cure, the product can be painted, drilled, machined, sanded or saw. It comes in a 8 oz. format.