MPS Services | Roofing Services in Sterling, VA 20164

In our Sterling climate, those black stains are often Gloeocapsa magma algae. Simply power washing can damage shingles. We use a specialized, low-pressure soft wash system with EPA-approved cleaning solutions that safely kill the algae at the root and include a zinc or copper-based treatment to inhibit future growth, protecting your roof's warranty and appearance.

Valleys handle the most water runoff, and our frequent freeze-thaw cycles and heavy rains in Sterling can wear down sealants and flashing. Our fix starts with a precise leak diagnosis. We then repair or replace the valley flashing with corrosion-resistant metals, ensure proper underlayment integration, and apply high-grade sealants designed for our local weather, creating a watertight channel.

Yes, absolutely. As licensed general contractors, we provide a complete solution. We'll first stop the leak at the roof valley, then address any interior damage to drywall, insulation, or ceilings. This includes water extraction, drying, mold prevention, and full restoration, so you have one reliable team managing the entire project from your roof to your living room.