Residential Roofing
Skilled Waterproofing Contractor in San Francisco.
Family-owned and Diamond Certified since 1982, serving the Bay Area with exceptional quality and customer service.
San Francisco's Waterproofing Company Since 1982.
Sure Roofing provides comprehensive waterproofing solutions for residential and commercial properties throughout San Francisco, Marin County, and San Mateo County.
As a Diamond Certified contractor, we identify where water enters your building and apply the right combination of membranes, sealants, and flashing to stop leaks permanently.
Our family-owned company takes an educational approach, ensuring you understand the source of your water problems before we recommend solutions.
Our Waterproofing Services
Water intrusion causes more damage to Bay Area buildings than any other single factor. Leaks can originate from failed flashing, deteriorated seams, improperly sealed penetrations, or membrane damage that allows moisture to reach the roof deck. Sure Roofing addresses all potential entry points to create a watertight building envelope.
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San Francisco homes face constant moisture exposure from fog, marine air, and seasonal rain. We waterproof flat and low-slope roofs using seamless membrane systems that eliminate the joints and seams where leaks typically originate. Our approach addresses not just the roof surface but also the penetrations, flashings, and transitions where water finds its way inside.
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Commercial buildings present additional waterproofing challenges due to rooftop equipment, multiple penetrations, and larger roof areas where ponding water can accumulate. Our commercial services address HVAC curbs, rooftop fire alarm equipment, pipe penetrations, skylights, parapet walls, and drainage systems to protect your business from water damage and the disruptions that come with it.
Systems We Install
Water intrusion causes more damage to Bay Area buildings than any other single factor. Leaks can originate from failed flashing, deteriorated seams, improperly sealed penetrations, or membrane damage that allows moisture to reach the roof deck. Sure Roofing addresses all potential entry points to create a watertight building envelope.
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Flat and low-slope roofs can be waterproofed through the application of elastomeric coatings that create a seamless, weather-resistant barrier. At Sure Roofing, we offer protective systems such as silicone and acrylic coatings that eliminate seams and joints where water typically penetrates. These monolithic systems conform to irregular surfaces and seal around penetrations without the weak points found in traditional multi-ply systems.
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Every vent pipe, skylight, HVAC unit, and roof-to-wall transition represents a potential leak point. We install and repair flashings using materials selected for compatibility with your roof membrane and durability in San Francisco's coastal climate.
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Flat roofs that hold standing water for more than 48 hours face accelerated membrane deterioration and increased leak risk. Silicone-based waterproofing systems resist ponding water without breaking down, making them the preferred solution for low-slope roofs where drainage is limited. We assess drainage patterns and recommend appropriate systems based on your roof's specific conditions.
Why Bay Area Properties Need Water Protection
San Francisco's coastal climate creates relentless moisture exposure that tests every roof system. Fog keeps surfaces damp for extended periods. Marine air carries salt and moisture that penetrate small gaps. Seasonal storms deliver heavy rainfall that overwhelms inadequate drainage. A building without proper waterproofing faces ongoing damage to insulation, framing, interior finishes and building contents.
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Seams and joints in multi-ply roof systems can separate over time, allowing water to penetrate between layers. Flashings around vents, pipes, and equipment deteriorate from UV exposure and thermal cycling. Membrane punctures from foot traffic, fallen debris, or equipment installation create direct paths for water entry. Our inspection process identifies all potential entry points before recommending repairs.
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Water damage compounds quickly. A small leak that goes unaddressed can saturate insulation, promote mold growth, damage ceiling materials, and eventually compromise structural framing. The cost of comprehensive waterproofing is typically a fraction of the repairs required after water damage has spread throughout a building.
Why Choose Sure Roofing
Sure Roofing brings over 40 years of Bay Area experience to every waterproofing project. Our Diamond Certified status reflects consistent customer satisfaction and quality workmanship verified by independent surveys.
We take an educational approach, helping you understand where water is entering your building and why. Not every leak requires a complete roof replacement, and we provide honest assessments that match the solution to the actual problem.
Our public works capabilities demonstrate our commitment to serving both private sector clients and government entities throughout the region. We apply the same standards of quality and accountability to every project regardless of size.
A Trusted Experience
Serving the Bay Area, Including San Francisco, Marin County, and San Mateo County
Sure Roofing provides waterproofing services throughout the Bay Area for both residential and commercial properties. We understand how local climate conditions affect system selection and apply that knowledge to every project. Ready to stop leaks and protect your property?
Frequently Asked Questions.
Still have questions? Take a look at the FAQ or reach out anytime!
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Most roof leaks originate at penetrations, seams, or flashing failures rather than membrane damage in the field of the roof. Vents, pipes, skylights, and roof-to-wall transitions create openings that require proper sealing. San Francisco's persistent fog and marine moisture accelerate deterioration at these vulnerable points.
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Signs of water intrusion include ceiling stains, peeling and bubbling paint, musty odors, visible mold, and moisture on interior walls after rain. If your flat roof holds standing water for more than 48 hours after rainfall, the membrane is at increased risk of failure. Sure Roofing provides inspections to identify water entry points before damage spreads.
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Waterproofing addresses specific leak sources through targeted repairs, flashing replacement, and protective coatings applied over an existing membrane that remains structurally sound. A new roof involves complete removal and replacement of the roofing system. Many roofs can be effectively waterproofed at a fraction of replacement cost.
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Silicone-based sealing systems can provide 20 or more years of protection with proper application. Longevity depends on the underlying roof condition, quality of surface preparation, and exposure to foot traffic and weather. Sure Roofing assesses your specific situation and recommends systems matched to your performance expectations.
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Look for a roofer who inspects thoroughly before recommending solutions and can explain exactly where water is entering your building. Leak prevention requires understanding how water moves across roof surfaces and through building assemblies. Diamond Certified contractors like Sure Roofing have verified track records of solving water intrusion problems.