Dry Rot Repair Contractor San Francisco, CA

In San Francisco—where coastal fog, damp conditions, and historic architecture are part of daily life—dry rot is a common and often hidden threat to homes. All it takes is a mix of moisture, wood, and warmth, and dry rot can begin to spread beneath the surface. Over time, the wood shrinks, darkens, cracks, and softens—compromising your home’s structure and aesthetics. Exterior trim is usually the first area to show signs, even on well-maintained homes.

While minor dry rot around trim and siding can usually be handled with simple repairs, more severe cases—such as damage to structural framing or mudsills—require expert attention. Dry rot only affects wood with elevated moisture levels (typically over 20%), so identifying and removing the source of that moisture is the first step.

In San Francisco homes, that moisture may come from internal leaks—like those from dishwashers, tubs, sinks, or washing machines—or the outside, due to cracked stucco, damaged roofing, unsealed windows, or faulty flashing. Once the water source is resolved, it’s critical to dry the area thoroughly to stop further deterioration.

After drying, any rotted wood must be removed and replaced with pre-treated or pressure-treated lumber. Preventing future damage involves installing proper flashing, framing, and weather-resistant trim. For extra protection, any remaining nearby wood should be treated with a quality fungicide.

Expert Dry Rot Repair in San Francisco, CA

Whether you own a historic Victorian or a modern build, Mares & Dow Construction & Skylights offers trusted dry rot repair throughout San Francisco. Our experienced team delivers long-lasting results and peace of mind, restoring your home’s integrity with precision. Contact us today for a free estimate!