How to Remove Algae From Roof Safely
To remove algae from a roof, identify the growth, protect people and landscaping, apply a manufacturer-approved roof cleaner at low pressure, allow the specified dwell time, and rinse gently or let rainfall remove the residue. Asphalt shingles usually need chemical treatment rather than scrubbing, because pressure washing and abrasive brushes can remove protective granules. Key […]
How to Remove Black Streaks on Roof Without Damage
Black streaks on an asphalt-shingle roof are usually caused by the blue-green alga Gloeocapsa magma. Remove them with a manufacturer-compatible, low-pressure chemical treatment, not a pressure washer or aggressive scrubbing. Protect plants and metal, keep the solution from drying, rinse runoff carefully, and hire a professional when roof access is hazardous. Key Facts at a […]