Do take care when pressure washing old brickwork and don’t set it to anything above 1500 to 2000 pounds per square inch. If you're painting brick, a pressure washer will make fast work of cleaning brickwork of dirt, efflorescence and mildew as well as loose old paint. A stiff brush should be used to remove flaking paint, loose stones and dirt and debris.ĭownpipes and other rainwater goods, along with windows and doors, should be covered and masked off. Render, pebbledash and brickwork should be properly prepared before work begins. Clean and prepare exterior walls for painting
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