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The Leading Crawl Space Repair Contractors serving San Francisco, CA
Crawl Space Repair & Encapsulation in San Francisco, CA
Since 2003, Clean CrawlSpace Inc. has helped homeowners in San Francisco, CA protect their homes from crawl space moisture, mold, and damage. As a certified CleanSpace® dealer, we use trusted solutions like vapor barriers, sump pumps, dehumidifiers, and insulation that is designed to last and backed by real results. When it comes to crawl space repair, we're the team other pros rely on. Even HGTV turned to us on House Detective to fix real crawl space problems.
What’s happening beneath your home matters. Musty smells, warped floors, and damp air often start in the crawl space but they don’t stay there. Moisture can quietly damage your structure, ruin air quality, and chip away at your home’s value. At Clean CrawlSpace Inc., we’ve spent over 20 years helping San Francisco, CA homeowners stop crawl space problems before they spread. We install proven systems like vapor barriers, sump pumps, drainage, and dehumidifiers, everything needed to protect your home from the ground up.
Services We Offer in San Francisco
Crawl Space Encapsulation: CleanSpace® 20-mil vapor barrier sealed along floors and walls to block moisture, odors, and outdoor air. Includes a 25-year transferable warranty.
Sump Pump Installation: Our powerful sump pumps come with airtight lids, built-in alarms, and optional battery backups, designed to handle water removal reliably, even during storms or outages.
Dehumidification: High-performance dehumidifiers like the SaniDry Sedona remove excess humidity, helping prevent mold growth and improving the air quality throughout your home.
Insulation for Crawl Spaces: We use water-resistant materials like SilverGlo® wall panels and TerraBlock™ floor insulation, built specifically to hold up in damp, low-clearance environments.
Mold Treatment & Cleaning: Mold-X2 products safely remove surface mold as part of a complete moisture management system.
Drainage Systems: Interior crawl space drains direct groundwater toward the sump pump, preventing water buildup and protecting your foundation.
Air Quality Solutions: Optional air purification systems help filter allergens, mold spores, and odors rising from your crawl space into your living space.
Worried about your crawl space? Get a free estimate.
If you're concerned about crawl space moisture, mold, or structural problems, you can count on Clean CrawlSpace Inc. for honest answers and proven solutions. We’ve earned the trust of homeowners in San Francisco, CA by delivering professional crawl space encapsulation, sump pump systems, drainage, dehumidifiers, and mold treatment that last. Schedule your free estimate today!
I have a sagging floor above a crawl space, likely due to dry rot. Can you help?
Project Location: San Francisco, CA
Inspection report detailed concerns about scrap wood and structural wood contacting earth. Evidence of rodents, some larger animal ripped down insulation and nested. General clutter.
Project Location: San Francisco, CA
Our roughly finished above ground or "walk-out" basement has moisture issues along the partially subterranean wall on the sloped hillside
Project Location: San Francisco, CA
We recently did a home remodel and had new hardwood floors installed. There is slight cupping of the floors and we had the installer come back and he suggested we have a moisture barrier put on the bottom of the floor joists. Our crawl space has a concrete rat slab and we currently have a portable dehumidifier
Project Location: San Francisco, CA
Just bought new house. Hoping to make crawl space less musty and more useful for storage.
Project Location: San Francisco, CA
Crawl space insulation falling down
Project Location: San Francisco, CA
Insulation, dehumidifier, vapor barrier
Project Location: San Francisco, CA
The house is sitting on a hillside. We are having water coming though the retaining wall and also from underground in a craw space next to our master bedroom that sits below grade.
Project Location: San Francisco, CA
We have 2 sump pumps under our house with a barrier system. We'd like to have a regular inspection.
Project Location: San Francisco, CA
After purchasing a home in 2022 our finished basement experienced water leaks during the wet winter seasons of 2022-2023 and 2023-2024 including water runoffs across the floor. We are interested in finding out what options there are for fixing this problem before the next wet winter.
Project Location: San Francisco, CA
Remove old insulation and anything else from crawl space. Treat for any fungus or mold. Replace crawl space insulation.
Project Location: San Francisco, CA
We are attempting to waterproof a below-ground brick foundation wall causing high humidity and mold. Possibly put a vapor barrier in the crawl space below our house.
Project Location: San Francisco, CA
Large area under house that has rat proofing concrete but no moisture barrier.
Project Location: San Francisco, CA
We have a crawl space about 20 x 20 under the garage that is getting wet in heavy rain. We use it for storage and I am concerned about mold, rot and pests.
Project Location: San Francisco, CA
I'd like to get an estimate of what it takes to clean, add vapor barrier and insulation to my crawl space.
Project Location: San Francisco, CA
I would like to know whether my crawlspace would benefit from any insulation or lining
Project Location: San Francisco, CA
We have a very wet crawl space for which mold pro inspector recommended encapsulation. We also have a water drainage problem on the uphill side which may be a cause. Would like someone to quote solving both problems. Please contact me to arrange for a time to inspect. Thanks
Project Location: San Francisco, CA
Uninsulated crawlspace with no vapor barrier. Bedroom is right above space and we have noticed mildew on the furniture.
Project Location: San Francisco, CA
My home flooded last year during the new year heavy rains. Since then, whenever there is a heavy rainstorm, the crawlspace will leak water. When the rain is especially heavy, the leak will be a steady stream of water that pools around our water heater, washer/dryer, and heat pump, before flowing out of our garage. I'm not sure if what we need is a crawl space encapsulation, sump pump installation, or something else.
