Why should you not pressure wash your house?

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A lot of people are quick to assume that pressure washing is the best cleaning method for an outdoor surface. It’s quick, powerful, and without a doubt, ever-so-satisfying when you see the results in action. It’s precise removal of dirt is due to the high intensity of the water, loosening stubborn particles from even the tiniest cracks. However, while this might work great on surfaces like sidewalks and driveways, it’s definitely too aggressive for most materials on your home. Here are a few things that should never be touched by a pressure washer:

Asphalt Shingles

Most home roofs are made with asphalt shingles, as they are cost-effective and easy to install. These shingles have a protective granule coating that aids in shedding water and provides UV and fire resistance. A pressure washer could not only remove the grit, but even blast off entire pieces.

Home Siding

While there are some home sidings that can withstand a pressure washing treatment, most are still best to avoid. If done incorrectly, wood siding can be etched or splintered, and aluminum or vinyl siding could be dented. The high pressure could also allow water to seep into the interior of the home, leading to issues of trapped moisture, mildew, or rotting.


While brick homes might look tough, old mortar can be weak and fragile. With the force of a pressure washer, it could easily be chipped or loosened, compromising the structure and safety of the home.

These are just a few items that shouldn’t be pressure washed, but there are many more home materials that are too delicate for such intensity. Some other items that should be avoided are windows, lead paint, electrical units, and plants. Before you decide on pressure washing your home, make sure to do the proper research in order to avoid any risk of damage.

Contact us today at The Clear Factor for a free quote! (508-418-9274)