Duram S900 Siloxane Water Repellent 15L

Duram S900 is a clear solvent-borne siloxane impregnant that soaks into porous substrates and forms a water-repellent barrier below the surface without changing the look of the material. It is alkali-stable, so it suits new concrete, cement render, face brick, block and sandstone. It stays vapour permeable, helps limit efflorescence and mould growth, and dries quickly to a clear finish. Supplied in a 15 litre pail.