Can Power Washing Damage My Vinyl Siding? Lakewood NJ Here is short and helpful video we found that demonstrates the safer and more effective to way to clean vinyl siding.  Anytime a commercial power washing system is used there is potential of damage to your property. Too much water pressure can blow off your siding, or even worse it can force water behind your siding and into your home. It is important to choose a contractor who is familiar with the more updated methods of cleaning and methods that don't require high pressure water. your vinyl siding may not be as delicate as stucco, nonetheless your home is your most valuable investment, and you should do everything to minimize the risk of damage to it. Can power washing damage my vinyl siding? Lakewood NJ. Well of course it can....but it doesn't have to:)