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Waterproofing the Bay Area for Over 30 Years
Proudly Disabled Veteran-Owned, Committed to Excellence - A+ Rated Carrier Insured
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We Waterproof The Whole Building Envelope
Your home deserves more than patchwork fixes. At Keith Weber, we specialize in protecting the entire building envelope—the barrier between your home and the outside world. From the roof above your head to the basement beneath your feet, we create a watertight system that keeps your home dry, secure, and built to last.
Keith Weber Company delivers professional exterior waterproofing solutions for commercial properties across San Francisco and the Bay Area. Our team applies advanced waterproofing systems to protect foundations, prevent leaks, and extend the life of office buildings, retail spaces, and multi-unit developments.
COMMERCIAL
Keith Weber Company specializes in protecting homes across San Francisco and the Bay Area with advanced exterior waterproofing. From basements and crawl spaces to hillside foundations and custom builds, we use premium polymer coatings, drainage boards, and engineered drain systems to stop leaks, safeguard structures, and keep homes dry for years to come.
RESIDENTIAL
ABOUT
"We Protect Your Investment!"
Keith Weber Company – Bay Area Waterproofing Specialists Since 1992
For more than 30 years, Keith Weber Company has been protecting high-end homes and boutique commercial properties across the Bay Area with expert waterproofing solutions. Founded in 1992, our mission has always been simple: deliver reliable, high-quality building envelope and waterproofing services that safeguard properties against water intrusion. By focusing exclusively on waterproofing and roofing, we’ve earned a reputation for precision craftsmanship, trusted materials, and long-lasting results. Today, we continue to set the standard in the waterproofing industry, combining decades of experience with a commitment to excellence that keeps our clients’ properties dry, secure, and protected.
Why the Building Envelope Matters
Complete Protection for Your Home, From Roof to Foundation
Water is one of the most damaging forces a home can face. A single leak in your roof, poorly sealed window, or damp basement can quickly spread, leading to structural damage, mold growth, and costly repairs.
That’s why we don’t just treat one problem area—we look at the big picture. Our team ensures every entry point for water is sealed, so your entire home works as a unified shield against the elements.
Roof Waterproofing
Your roof is the first line of defense against heavy rain and storms. We use advanced membranes and sealing techniques to prevent leaks and long-term water damage.
Windows & Doors
Even the smallest gap can allow moisture inside. We properly seal and waterproof around all windows and doors to stop drafts, water intrusion, and hidden mold growth.
Exterior Walls & Siding
Walls aren’t just aesthetic—they’re structural protection. Our exterior waterproofing guards against wind-driven rain, cracks, and weather damage that can compromise your home’s envelope.
Basement & Foundation Waterproofing
Basements are one of the most vulnerable areas of a home. We stop seepage, standing water, and foundation cracks with proven drainage and sealing solutions.
Interior Wet Areas
Moisture doesn’t just come from outside. Showers, bathrooms, laundry rooms, and other wet areas can cause water damage if not sealed properly. We provide interior waterproofing that keeps these spaces safe for years to come.
Our History
For Over 30 Years
Keith Weber Company was founded in 1992 with a clear mission: to deliver reliable, high-quality waterproofing services that protect properties from the damaging effects of water intrusion. What began as a small, family-owned business has grown into one of the Bay Area’s most trusted names in waterproofing and building envelope solutions.
For more than three decades, we’ve proudly served San Francisco, Oakland, Palo Alto, San Jose, and surrounding communities. Our reputation has been built on craftsmanship, transparency, and a commitment to excellence that goes beyond industry standards.
As a disabled veteran-owned, licensed, and insured company, we’ve always held ourselves accountable to the highest levels of professionalism and safety. Our accreditation with the Better Business Bureau further reflects our dedication to ethical business practices and long-term customer trust.
From hillside residences in the Peninsula to commercial buildings in downtown San Francisco, our history is written in the foundations we’ve protected and the relationships we’ve built. Today, we continue to uphold that legacy—combining decades of experience with innovative waterproofing systems that safeguard Bay Area properties for years to come.
Waterproofing solutions we are known for!
Flat Roofing
Durable, watertight solutions for flat and low-slope roofs, protecting against ponding water and long-term leaks.
Showers, Saunas, & Steamrooms
We provide expert waterproofing for custom shower pans, saunas, and steam rooms, ensuring these high-humidity areas stay sealed, safe, and built to last.
Basements & Foundations
We use advanced waterproofing membranes, sealants, and protective coatings to stop leaks and seepage before they cause costly damage.
Why Waterproof
Bay Area Exterior Waterproofing for Homes & Commercial Buildings
Water intrusion in basements, garages, or below-grade spaces can cause serious damage if left untreated. Keith Weber Company provides expert exterior waterproofing for luxury homes and smaller commercial buildings throughout San Francisco, Palo Alto, Atherton, and the greater Bay Area.
Our proven system includes sealing foundation walls with advanced polymer coatings, installing drainage boards, and adding high-performance drain piping that directs water safely away from the structure. Whether routing to daylight or a sump pump, every detail is designed for long-term protection.
With more than 30 years of experience, our team ensures Bay Area properties remain dry, secure, and protected from costly water damage.
What Our Clients Say...
Keith Weber Company helped us out with detecting and fixing a basement leak that hit us during the atmospheric river storms. This leak was extremely tricky to find. He did a great job chasing the root cause and fixing it.
Throughout the process he happily explained things and guided us on the phone and on site.
San Jose, CA
Keith Weber Company was our 2nd call during a big storm, roof leaking into a bedroom and gutter pulling away from the house. The first roofer didn't answer. Keith did. He came right over in the rain, climbed up on the roof, cleaned out the gutter (cause of the issue), walked around and inspected the rest of the roof, all for a minimal charge. He didn't push replacing the roof right away, but suggested many types that would work, and a colleague who he trusted could do the work more quickly. Keith really knows his stuff. He's licensed.
San Francisco, CA
Keith Weber Company was great in finding the leak in my house, something that no other contractor had bothered to figure out. I especially liked that Keith gladly shared his knowledge with me over the phone even before he came out to look at my situation. He was very gracious in allowing me to work with him; he is a truly talented tradesperson. Keith arrived exactly when he said he would and charged me a very reasonable price.
Oakland, CA