Roofing in San Francisco, CA

Serving San Francisco and Surrounding Areas

The biggest enemy of a San Francisco roof isn't the sun — it's the fog and the wind. The marine layer rolls in almost every evening, leaving your shingles damp well past midnight. That moisture seeps into every exposed fastener and wicks along the edges of your flashing. Over time, the asphalt oxidizes, the granules flake off, and the mat underneath begins to spall and peel. We see granule loss on roofs that are only 12 years old in the Sunset District, where the fog is thickest.

Pacific storms bring another problem: wind-driven rain. When a storm hits, water can be forced up under the starter course and field courses, especially if the shingles weren't staggered properly during installation. We also find a lot of ice dams on the north-facing slopes of Nob Hill homes, even though our winters are mild — the heat from the attic melts snow, and it refreezes at the eaves. That trapped water backs up under the shingles and rots the decking.

Our repair process starts with a full inspection. We look for sag, rot, and end-of-life wear, and we check the flashing around chimneys and skylights. We'll show you photos and explain what we found in plain language. If you need a new roof, we'll recommend the right material for your home's age and style — not the most expensive one. If a simple recover or overlay will buy you ten more years, we'll tell you that too. We've been fixing roofs in this city for over a decade, and we know how to make them last through the fog.