TOUPRET Masonry Repair Filler will fill exterior masonry without depth limit. It is a powder filler that will adhere to damp masonry and is weather resistant. It\'s also easy to shape and can be used for repairs without the need for formwork. Can be used on all rough masonry surfaces: cement concrete breeze blocks brickwork and stone. Overcoat with any standard water-based masonry paint or mineral paint. If using polyurethane or epoxy solvent-based paints first prime with a water-based exterior paint.