Durham's Rock Hard Water Putty - 16 oz.

The repair material in a powder form; just add water, mix, and use Durham's® to make lasting repairs in wood, plaster, stone, tile, and other surfaces. Fills cracks, knot-holes, and other voids. Durham's® may be used for interior or exterior repairs. But if used outdoors, it must be kept painted and protected from moisture. Not for use on decks or porch floors.