Power washing is one of the most effective ways to clean tough grime, mildew, and dirt from your home’s exterior. But while it’s great for many surfaces, not everything can handle high-pressure water safely. In fact, using the wrong pressure on the wrong surface can cause serious and costly damage.
At Clean Start Exteriors, we’re experts in power washing in Hamilton, and we know which surfaces to avoid. Here are the top five you should never power wash—and what you should do instead.
Table of Contents
1. Asphalt Roof Shingles
Asphalt shingles may look tough, but blasting them with high pressure can strip away the protective granules that guard against UV rays and weather damage. It can also shorten the life of your roof or cause leaks.
Instead: Use a soft washing technique with low pressure and gentle cleaning solutions to safely remove moss, mold, and dirt.
2. Wood Siding
Wood is porous and can splinter or warp under the force of a power washer. It may even drive moisture into the walls, leading to rot or mold issues.
Instead: A low-pressure wash or soft wash method is ideal for wood. Our team at Clean Start Exteriors adjusts pressure settings to match each material’s needs.
3. Old Brick or Mortar
While newer brick may be safe to power wash with care, older brick or deteriorating mortar can crumble or dislodge when exposed to high pressure.
Instead: Gentle washing with a brick-safe detergent and controlled rinsing will protect the integrity of your brickwork.
4. Windows and Glass Panels
Using a power washer on windows can shatter the glass or damage seals, especially on older panes or those with worn-out caulking.
Instead: Professional window washing in Hamilton is safer and delivers streak-free, spotless results without the risk of breakage.
5. Electrical Fixtures or Outdoor Equipment
It might be tempting to spray around outdoor lights, AC units, or vents, but water under high pressure can cause electrical damage or corrosion.
Instead: We carefully clean around these areas by hand or with controlled low-pressure methods.
Final Thoughts
Power washing is an excellent tool—but only in the right hands. Improper use can lead to thousands of dollars in damage. That’s why homeowners across the region trust Clean Start Exteriors for power washing in Hamilton.
Want expert results without the risk? Contact us today for a free estimate!
