Lewis Roofing | Roofing Services in Mount Vernon, NY 10550

Those common black streaks are actually a hardy algae called Gloeocapsa magma, which thrives in our area's humidity. The most effective and safe treatment is a professional soft wash with a specialized, eco-friendly cleaning solution. We avoid high-pressure washing, which can damage your shingles. This treatment removes the stains and includes a preventative zinc or copper strip application at the roof ridge to inhibit future growth for years.

Preventing ice dams starts with addressing the root cause: heat escaping from your attic that melts snow unevenly. Our expert approach involves a two-part solution. First, we conduct an attic inspection to ensure proper insulation levels and, crucially, adequate ventilation (soffit and ridge vents) to keep the roof deck cold. Second, we can install a waterproofing membrane (ice and water shield) along the roof's eaves during repairs or replacements, providing a critical last line of defense against any water that does back up.

Ice dam damage often affects the underlying roof deck, fascia, and can lead to interior leaks. Our repair process starts with a thorough inspection to assess all affected areas. We typically remove compromised shingles and sheathing, replace any rotten wood, and install new ice and water shield protection before re-shingling. For extensive or recurring damage, a full roof replacement with upgraded ventilation might be the most cost-effective long-term solution to permanently solve the problem for your Mount Vernon home.