A masonry waterproofer which repels exterior water, whilst allowing the emission of water vapour ensuring the interiors and cavity walls remain dry. It protects the surface against water and frost, providing a micro-porous coating which does not change the aesthetic appearance of a building. A secondary benefit of the product is to repel waterborne dirt and resist fungal growth as well as help reduce heating costs, as energy is not wasted in drying out damp walls. Features & Benefits:- Protects brickwork, cement and concrete – Low environmental impact – VOC free – Low hazard; no vapours – Odourless.