Most people who search for roof pressure washing want the dark streaks gone. We get that. On asphalt shingles the streaks are usually a cyanobacterium called Gloeocapsa magma, which feeds on the limestone filler in the shingle and spreads on the wind, as the Asphalt Roofing Manufacturers Association explains. Tile, flat, and metal roofs grow algae and mildew of their own.
High pressure takes the protective surface off and can push water under the roof. We use a soft wash instead: low pressure, and a roof-safe cleaner that does the actual work.
High-pressure blasting compared with low-pressure soft wash on a roof| On your roof | High-pressure blasting | Our low-pressure soft wash |
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| Shingles | Knocks off protective granules. | Granules stay in place. |
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| Algae and mildew | Roots stay and streaks return sooner. | Cleaner kills growth at its base. |
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| Water intrusion | Can force water under the roof surface. | Gentle flow that follows the way rain runs. |
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| Tile, flat, and metal | Can chip tile and scar coatings and membranes. | Safe on tile, flat roofs, metal, and shingle. |
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Coral Springs roofs are mostly concrete tile, consistent with decades of planned construction across the city, with shingle on some older sections and newer flat or metal roofing on recent development. Heat and humidity grow algae and mildew on all of them, often faster near the city's lakes and canals than on a drier lot farther from water. Tile pressure stays far under the roughly 1,200 psi limit tile manufacturers set, cleaned with a concrete-compatible product and footing kept to the overlap seams.
Coral Springs is inside the High-Velocity Hurricane Zone, which covers Miami-Dade and Broward counties both, and roofing products installed here need a Miami-Dade Notice of Acceptance even though the city is in Broward. We clean roofs. Repairs and re-roofing belong to a licensed roofer, and the city's strict exterior standards mean any visible change is worth confirming with the city before work begins. Roofs closest to the city's lakes and canals typically need washing sooner than roofs on drier, more inland streets.
Most roofs do well with a wash every two to three years. Shaded slopes and roofs under trees grow algae faster and may need it sooner. A damp, algae-covered roof also sheds more grit into the gutters below, which is one more reason we handle both in a single visit.
See how our roof washing works in Coral Springs