Angie’s Roofing and Repair Commercial Flat Roofing | Roofing Services in Dallastown, PA 17313

Those dark streaks are typically caused by a type of algae called Gloeocapsa magma, which thrives in our humid Pennsylvania climate. It's not just a cosmetic issue; it can retain moisture and shorten shingle life. Yes, we can safely and effectively clean them using professional-grade, roof-safe solutions that remove the stains without damaging your roofing materials, helping to restore your roof's appearance and longevity.

Finding some granules, especially after a new roof installation or a severe storm, can be normal. However, excessive granule loss is a common sign of aging or deteriorating shingles here in Dallastown. It means the protective layer is wearing away, leaving the asphalt exposed to UV rays and weather. We recommend a professional inspection to assess the extent of the damage. We can often perform targeted repairs or, if needed, discuss a roof replacement to prevent leaks and more costly damage.

Proactive maintenance is key. For commercial flat roofs and shingle systems alike, we recommend bi-annual inspections—typically in spring and fall. These check-ups allow us to catch early signs of algae growth, granule loss, or membrane wear, clean debris from drains, and address minor repairs before they become major problems. For flat roofs, ensuring proper drainage is especially critical. A consistent maintenance plan with a local expert like us is the most cost-effective strategy to extend your roof's lifespan and protect your asset.