Roofing in San Francisco, CA

Serving San Francisco and Surrounding Areas

Living in San Francisco means your roof faces a unique set of enemies. The fog and marine layer keep moisture on your roof for hours every morning, even when the sun is shining elsewhere. That persistent dampness seeps into every crack and wicks under the edges of your shingles. Over time, the adhesive strips fail, the granules erode, and the underlying felt begins to rot. You might not notice it until a winter storm turns a small leak into a ceiling stain — or worse, a sagging section of decking.

Another issue is wind. The strong Pacific storms that hit the coast can lift shingles that weren't nailed down properly. If your roofer used staples instead of ring-shank nails, or failed to install a proper starter course, the wind will find those weak points. Once a shingle lifts, water has a direct path into your home. That's how a minor problem becomes a major repair.

We also see a lot of end-of-life wear on older roofs. Many San Francisco homes still have original roofs from the 1980s or 1990s. By now, the shingles are brittle, cracked, and losing granules. The flashing around chimneys and skylights has corroded. The underlayment has deteriorated. If your roof is approaching 25 years old, it's time for a professional inspection. We'll tell you honestly whether a repair will last or whether a replacement is the smarter investment.

Don't wait for a leak to appear. By then, water has already damaged your insulation, your drywall, and possibly your framing. Call Mill Valley Roofing at 4158732076 and we'll send a crew to assess the damage — before it gets worse.