Gielow Roofing | Roofing Services in Redwood City, CA 94063

We take a comprehensive approach to moss. First, we safely remove existing moss with specialized, non-pressure cleaning methods to avoid damaging shingles. Crucially, we then treat the area with a zinc-based preventative solution and evaluate your roof's ventilation and sunlight exposure—common culprits in our damp climate—to recommend long-term solutions that inhibit regrowth.

Signs include interior water stains, a musty smell in the attic, or curled/buckling shingles, often worsened by our local moisture. Our expert technicians will perform a thorough inspection. If underlayment failure is confirmed, we carefully remove the affected shingles, replace the deteriorated underlayment with high-quality, moisture-resistant materials, and re-install the roofing to restore a watertight seal.

We recommend bi-annual visual inspections, especially after our rainy season, to check for moss, debris in valleys, and clogged gutters. Ensuring your attic has proper ventilation is key to reducing moisture buildup that damages underlayment. Scheduling a professional inspection every few years allows us to catch small issues common in our climate before they become major, costly repairs.