Pressure washing costs in Tampa

Those dark streaks running down a Tampa shingle roof are usually algae, not dirt. The Asphalt Roofing Manufacturers Association says this kind of stain is most widespread in the Gulf States, and it names Gloeocapsa magma as the likely main culprit. Its advice is blunt: don't put a power washer, a brush or a broom on the roof, because high-pressure washing is likely to damage asphalt shingles. The cleaning it describes is a bleach-and-water solution left on for 15 to 20 minutes and rinsed off. It also warns the result is only temporary, and the streaks may come back.

Water supply sets its own limits on washing here. In April 2026, during a drought, the Southwest Florida Water Management District put Hillsborough, Pinellas, Pasco and eight other counties under a Modified Phase III water shortage. In October 2026 its restrictions page says the order is extended through March 31, 2027, and that annual pressure washing for looks is not allowed. The City of Tampa still allows washing before painting or sealing. It also allows necessary maintenance on driveways and sidewalks, including clearing mold or mildew that can't come off by mechanical means.

That order also takes the pressure off homeowners in deed-restricted neighborhoods. Tampa's rules say meeting an HOA's look-good standard doesn't count as necessary maintenance, and no HOA can enforce a rule that makes you use more water.