Your House Power washing your house every year with a high-pressure water spray can not only keep it looking good but can cut the need to repaint as often. Power washing aluminum, steel, vinyl or wood siding removes grit that grinds away the surface when it's agitated by wind or rain. Power washing is also a good way to prepare a house's surface for repainting, once the siding is clean you may find that you don't need to paint after all. If your house does need repainting, a thorough power washing removes dirt mildew, moss, peeling, flaking and chalking paint. You can wash a large house in a single day.
Power washers are available for rent from tool rental stores and some paint stores.
Make sure someone demonstrates how the equipment works and answers all your questions before you leave the store. For the average house, a rating from 1,200 to 2,500 psi, is sufficient. Power washing with clear water usually does the trick. But to remove chalking, moss or mildew, you'll probably need a general cleaning agent, available where you rent the equipment. Nozzle design and spray width are important.