Bostik Cementone Water Seal is a high performance, clear waterproofer for masonry and wood. It is a long lasting, deeply penetrating, water repellent solution for porous external walls and fascias.
It penetrates deep below the surface to provide a water resistant barrier on porous exterior surfaces. Increasing their life by protecting against rain, damp & frost damage. It is suitable for concrete, brick, stone, slate, terracotta, render and timber.
Water Seal is transparent and should not alter the appearance of the treated surface. Some surfaces may darken very slightly, so always carry out a test on a small area before full application.