Pressure washing is the perfect way to get hard surfaces really clean. A combination of the right water pressure, good technique, and an effective cleaning solution will remove even the worst and deepest set stains from the wooden boards of your deck, dock, boardwalk, and siding. Too much power or the wrong technique, however, can severely damage or even ruin the wood surfaces around your home. In some cases, damage can be fixed by sanding the boards, but in other cases, boards or planks may need to be replaced or even rebuilt. Avoid these horror stories by learning how to pressure wash your wood surfaces the right way!
Step 1: Select the right pressure.
Pressure is measured in psi (pounds per square inch), and typical pressure levels for power washing range from a few hundred psi all the way up to a few thousand. It’s tempting to just opt for the highest level of pressure available, but high pressure can etch into brick and cement surfaces, and will totally destroy softer wood surfaces.