T Nagle & Sons Roofing | Roofing Services in Philadelphia, PA 19125

We start with a thorough inspection to pinpoint the leak source, which is often failed flashing or sealant around the skylight frame due to our local temperature swings. Our repair involves removing old materials, applying new high-quality flashing and sealants designed for our climate, and ensuring a watertight integration with your existing roof. This targeted fix addresses the root cause to prevent recurring leaks and interior damage.

The humid summers here are perfect for algae growth. We use a professional, low-pressure soft wash system with EPA-approved cleaning solutions. This method safely kills the algae and removes the stains without damaging your roof shingles. We also can apply a preventative zinc or copper treatment at the ridge to inhibit future growth, keeping your roof looking cleaner longer.

In Philadelphia, the most common cause is thermal expansion and contraction from our seasonal extremes, which breaks down the flashing and sealants over time. Improper initial installation can also be a factor. Our experts check for these specific failure points. A proper repair here isn't just a patch; it's a system reinstalled to withstand our local weather cycles.