Wattyl Estapol Raincoat (Multi Surface Water Repellent) is an all purpose, transparent, non silicone, water repelling solution that penetrates porous material such as brick, concrete, timber and natural stonework. This unique formulation prevents water damage, by creating a protective barrier beneath the substrate's surface - repelling water and moisture, and preserving the material's natural beauty. By repelling water (including salt water), Wattyl Estapol Raincoat inhibits mould, moss and fungal growth, and helps prevent surface discolouration caused by dirt particles being entrapped in the substrate's surface. Because Wattyl Estapol Raincoat penetrates and seals beneath the surface, it will not change the appearance (texture, colour and feel) of the material.