Riehl Roofing and Siding | Roofing Services in Narvon, PA 17555

Those dark streaks are common here due to our humidity. While some DIY cleaners exist, improper use can damage shingles and void warranties. We use a professional, low-pressure cleaning solution specifically formulated to kill the algae at its root and rinse it away safely. More importantly, we can install zinc or copper strips along your roof ridge—a long-term solution that prevents stains from coming back with each rain.

This is a frequent issue in our area. The freeze-thaw cycle of a Pennsylvania winter is tough on roofs. Ice dams can force water under shingles, and expanding/contracting materials can loosen flashings around chimneys, vents, and valleys. When the snow finally melts, all that trapped water finds these new weak points. We perform a meticulous inspection to find the exact source—often hidden from plain view—and make a permanent repair to prevent it from happening again next year.

Our goal is always the most cost-effective, long-term solution for your home. Many leaks, especially those from isolated storm damage or a single failed flashing, can be repaired perfectly. However, if we find widespread wear, multiple leak sources, or underlying deck damage during our inspection, we'll give you an honest assessment. We'll never recommend a full replacement unless it's truly necessary to protect your home's structure and interior.