Bo's Quality Roofing | Roofing Services in Saint Petersburg, FL 33784

Those black streaks are Gloeocapsa magma algae, very common here due to our humidity. We recommend a professional soft wash treatment, not high-pressure washing which can damage shingles. For a permanent solution, we can install algae-resistant shingles during your next roof replacement to prevent future growth.

The salt air in Saint Petersburg accelerates corrosion of standard galvanized steel flashing. We address this by using corrosion-resistant materials like aluminum or copper for flashings and ensuring proper installation to prevent water intrusion, which is the real danger behind the rust you see.

We advise Saint Petersburg homeowners to have a professional inspection at least once a year, ideally before and after the rainy season. Our inspections focus on checking for loose or damaged shingles, evaluating flashing integrity, clearing debris from valleys, and looking for early signs of algae or moss—catching small issues early prevents major repairs.