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Pressure Washing for Roof Shingles: Gentle Approaches Explained
Homeowners tend to think of a pressure washer as a magic wand. Aim, pull the trigger, watch years of grime disappear. On a deck or a driveway, that instinct often pays off. On a roof, it can go very wrong. Shingles are tough in their own way, but they are not built to take the kind of cutting force a concentrated jet delivers. I have seen roofs cleaned in a rush that looked perfect for a week, then shed granules in the first summer storm and lost years of service life. I ha