D M F Roofing & Contracting | Roofing Services in Laconia, NH 03246

In the Lakes Region, the freeze-thaw cycle is tough on roofs. Melting snow and ice can seep into tiny cracks or under damaged shingles that expanded during freezing temps. The first step is to contain any interior damage and call for a professional inspection. At D M F Roofing, we'll safely assess the roof, identify the source of the leak—often around flashings, valleys, or ice dam areas—and provide a clear repair plan to stop the water and prevent future issues.

Those dark streaks are typically Gloeocapsa magma, a type of algae that thrives in our humid New Hampshire climate, especially on north-facing roof slopes that stay damp. While not immediately damaging, it can retain moisture and shorten shingle life. Yes, it can be safely cleaned. We use low-pressure, professional-grade cleaning solutions that remove the stains without damaging your shingles' protective granules. We can also discuss algae-resistant treatment options for longer-term prevention.

We recommend a professional roof inspection at least once every two years, and always after a severe weather season. Given our heavy snowfall, spring ice dams, and summer storms, an annual check is wise. We look for signs of wear specific to our area, like lifted shingles from wind, granular loss from hail, or compromised seals from thermal cycling. Catching minor issues early, like a small leak or loose flashing, can prevent major, costly repairs down the line.