Durham's Rock Hard Water Putty, 25 lb Drum

25 lb drum for professional and high-volume use. Durham's Rock Hard Water Putty is a powdered repair material: just add water. It fills cracks, knots, and nail and screw holes in wood, plaster, drywall, stone, tile, concrete and other materials. It sticks, stays put and will not shrink, and it dries very hard.

Once dry, it can be sawed, chiseled, drilled, sanded, polished, colored and painted. For indoor or outdoor use; outdoor repairs must be kept painted.