Biernesser A F Roofing | Roofing Services in Allison Park, PA 15101

Those black streaks are Gloeocapsa magma algae, common here due to our humidity. While pressure washing can damage shingles, we use a specialized, low-pressure soft wash with EPA-approved cleaners that safely kill the algae without harming your roof's granules or warranty. We also recommend installing zinc or copper strips at the ridge to prevent future growth.

Shingle curling is a serious sign of aging or ventilation issues, common in our area with hot summers and cold winters. Curling shingles lose their protective ability and can lead to leaks and interior damage. We provide a free inspection to determine if targeted repairs can solve the issue or if a replacement is needed to ensure your Allison Park home stays dry and secure.

We recommend a professional inspection at least once every two years, and always after a major storm. Our local climate is tough on roofs, with heavy rain, snow, and temperature fluctuations that can accelerate wear. A proactive inspection from our team can catch minor issues like early-stage curling or moss buildup before they become costly repairs for your home.