Toupret Murex exterior filler with excellent adhesion, powder filler mixes to a white resin. Murex comes in 10 x 1kg bags and is ideal for filling and repairing both exterior and interior substrates, including old painted surfaces, masonry, primed wood, concrete, cement, stone, brick, plaster and cellular concrete. Murex is an all substrates filler and can be over painted with any decorative coating. 1kg of powder makes 1 litre of filler. Holes; up to 10mm deep - drying time: 24 hours.