The jet of a pressure washer can actually damage the wood.
Power washing wood siding.
Starting low and gently working your way up is the safest bet.
A pressure washer can quickly ruin vinyl siding by cracking it with the high pressure stream of water so it s necessary to know which pressure level and nozzle to use.
While it s possible to wash wood siding correctly there s also a good chance that water will find its way up and under the exterior surface if you use high pressure.
From there water can damage insulation electrical wiring and can spur mold growth.
How to safely clean wood siding on a house.
Pressure washing can also remove many stains but care must be taken.
Wood siding can benefit from a pressure wash as the grit that accumulates can be totally removed.
A high powered pressure washer can also dent aluminum and vinyl siding.
Depending on how much pressure you use and the width.
Wood siding cleaner plastic sheeting.
The grit can cause damage as the wood moves with the wind and the changes in temperature.