Under conditions of prolonged driving rain, exterior masonry claddings can absorb water to a degree that the interior face can become damp. There is a cavity of between 35mm – 50mm between the back of the bricks and the timber framing that prevents possible dampness from the bricks bridging to the framing timbers. During manufacture Insulmax is treated with inert water repellent and has been independently tested to be very resistant to the absorption of water and it will not wick water. By installing a highly water repellent insulation that will not wick liquid water into a brick home, the function of the cavity is maintained. Ask your Insulmax representative for a sample of Insulmax insulation and test it for yourself in a glass of water. We guarantee you’ll get tired of watching it float – for MONTHS! As an additional insurance, your Insulmax contract includes surface sealing exposed brickwork with an inert invisible water repellent coating. This photo shows beading rain on the surface of a red brick property after the water repellent surface sealer has been applied. Water repellent dry fibre insulation systems like Insulmax are present in over 6.5 million brick homes in the U.K. alone. The U.K. Building Code allows water resistant dry fibre systems to be used in all areas of the U.K. – including the Outer Hebrides!