Storm Proof Industries | Professional Roofing Services in Manchester, NH

The stains are often caused by Gloeocapsa magma algae, which thrives in our humid climate. We recommend professional roof cleaning with specialized, non-corrosive solutions to remove existing growth and applying preventative zinc or copper strip treatments at the roof peak to inhibit future stains.

Valleys are high-traffic areas for water and are prone to wear, improper sealing, or debris buildup. Our repair involves a thorough inspection to identify the specific failure point—often compromised flashing or underlayment—and a precise repair using high-quality, waterproof materials to restore the valley's integrity.

Keep an eye on the interior walls or ceilings near the roof valley for water stains or dampness. Outside, check for cracked, bent, or missing flashing in the valley, or any sagging in the valley line itself. Early detection allows for a simpler, more cost-effective repair.