FEBSILICON EXTERIOR WATERPROOFER 25LTR - FBSIL25 FEBSILICON is an external surface applied waterresistant compound for brickwork and certain types of natural and artificial stonework. FEBSILICON penetrates deeply beneath the surface to deposit a silicone barrier in the capillary channels, substantially reducing rain penetration and helping to keep the surface clean. FEBSILICON conforms to the specification of BS 6477, Groups 1 and 4.
To substantially reduce the water permeability of external brickwork, weathered asbestos sheeting and certain types of artificial stonework, suitable for application to vertical surfaces only.
Deeply penetrating, water repellent. Colourless, long lasting. Protects surface from discolouration due to pollution. Helps to reduce efflorescence. Economical and easy to use. When applied by brush or spray to surfaces of natural stonework, brickwork, certain types of concrete block, artificial stonework and cement paint, it penetrates deeply beneath the surface to line the pores with a thin water repellent coating without significantly changing the appearance or affecting the breathing property of the wall. This substantially reduces rain and damp penetration, protects the surface from discolouration and weathering and aids in preventing efflorescence and spalling of the surface from frost attack. In industrial areas, the sealing of masonry with FEBSILICON protects the surface from attack by the acidified atmosphere and aids in preventing discolouration by smoke.
Effect on Thermal Insulation: Loss of heat through wet brickwork, etc., is one and half times greater than when it is dry. Prevention of rain and damp penetration with FEBSILICON therefore aids in preserving the heat insulating properties of the wall.
Effect on Masonry: The application of FEBSILICON does not significantly change, darken or form a sheen on the surface treated.
