Wykamol Enviroseal Silicone Water Repellent Masonry Stone Brick Wall Sealer 5 LitrePLEASE NOTE: All items will be shipped and delivered by the following services: Evri, DX, DHL and Royal Mail. The service used is dependent on location of delivery, weight of parcel, size of parcel, value of contents and carrier restrictions of transport.\nWykamol Enviroseal Water Repellent is an effective water repellent liquid based on a solvent free silicone/ siloxane emulsion for use above ground on porous brickwork, cement renderings, asbestos, cement/mineral boards, unglazed tiles, cast concrete, roughcast, stonework (including calcareous materials, i.e. those containing limestone), wood, canvas\nand leather. \nSurfaces treated with Enviroseal remain permeable to vapour so that moisture within the structure does not remain trapped.\nEnviroseal is clear and colourless and will not normally alter the appearance of treated surfaces. In some circumstances, however, very slight darkening may occu.