Serving Fremont, San Jose, San Francisco

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Reviews From Napa
Products & Services

Products:

  • CleanSpace® 20-Mil Vapor Barrier
  • SmartSump™ Crawl Space Sump Pump System
  • UltraSump® Battery Backup System
  • SaniDry Sedona Dehumidifier
  • SmartJack® Crawl Space Support System
  • SilverGlo™ Wall Insulation Panels
  • TerraBlock™ Crawl Space Floor Insulation
  • Mold-X2 Treatment System
  • Interior Drainage Systems / Trench Drains
  • Optional Air Purifiers
Happy Customers Surrounding Napa, CA
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Work Requests

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Your Trusted Crawl Space Repair Company serving Napa, CA

Crawl Space Repair & Encapsulation in Napa, CA

Clean CrawlSpace Inc. has been protecting homes in Napa, CA from crawl space moisture, mold, and structural issues since 2003. As a certified CleanSpace® dealer, we install proven solutions like vapor barriers, sump pumps, dehumidifiers, and insulation that are designed for long-term performance. We’re not just experts in crawl space repair, we’re the experts that other experts trust. That’s why HGTV featured our team on House Detective, turning to us to solve real crawl space problems on national television.

 

Musty smells, damp air, and sagging floors are more than annoying, they're warnings. Left untreated, they can lead to mold growth, wood rot, rising humidity, and foundation damage. For over 20 years, Clean CrawlSpace Inc. has helped homeowners in Napa, CA fix their crawl spaces with lasting, warrantied solutions. From full encapsulation to drainage, sump pumps, humidity control, and air purification, we’ll help you create a dry, healthy space beneath your home.

Our Services in Napa

  • 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 Systems: Sump pump installations with airtight lids, alarms, and optional battery backups to remove standing water and prevent flooding.
  • Dehumidifiers & Humidity Control: Crawl space dehumidifiers like the SaniDry Sedona control moisture and improve indoor air quality.
  • Crawl Space Insulation: Moisture-resistant insulation including SilverGlo® wall panels and TerraBlock™ floor insulation, built to last in tough crawl space 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 Purification: Optional air cleaners reduce allergens, mold spores, and musty odors from air circulating up from your crawl space.

Crawl Space Problems? Get a Free Estimate!

If you’re dealing with crawl space moisture, mold, or structural issues, contactClean CrawlSpace Inc. for a free crawl space encapsulation and repair estimate in Napa, CA and nearby. We offer professional sump pump installation, drainage systems, vapor barriers, dehumidifiers, and mold treatment to keep your crawl space dry, clean, and protected.

Job Stories From Napa, CA
Grey Water Cleanup Napa, CA

Janice I. of Napa California had water gray water entering her crawlspace. Her first clue something was off is when her house was smelling musty when the heater was running and a lingering smell in the vents. The next clue was the dining room floor was warping. It started to look like a pitchers mound! They decided to take a peek into the crawlspace, to see what in the world was going on, and when they opened the door they were hit with a strong nasty garbage smell. All this lead her to know something was amiss under the home and was looking forward to finding out why this was happening. She hopped on google and Clean Crawl Space on Yelp and Nextdoor. She was so impressed by our excellent rating that she was happy to go with us knowing she was getting the absolute best service.

 

Our sales rep, Florencio, was excited to go and assess the situation so we could get this problem solved. After introducing himself, he suited up and headed into the crawlspace. His attention was immediately trained on the massive amount of greywater in the crawlspace. He immediately noticed a leak from a pipe under the home. As seen in the picture, there was a rusted out pipe that had several holes in it. He continued to do a full inspection of the crawlspace making sure there were no other issues.

 

The report: 

There was a rusted out pipe that was leaking grey water into the crawlspace contaminating the soil and causing an awful smell. This had been leaking for a while because there was a lot of mold growing around the greywater. 

 

The solution: 

1. Remove the greywater 

2. Sanitize the entire crawlspace and clean the musty, nasty air. 

3. Have a plumber come and replace the pipe.

 

With the plan laid out and the source of the greywater turned off, our crews got to work. They first started by removing the gray water via a pump truck. Then they used Hepa vacuums to remove any contaminated soil, mold, or fungus. Then they sprayed a solution to kill any residual mold/fungus present. All the while running HEPA filters to remove any contaminants going into the air so as to protect the home and homeowner. These HEPA filters also clean the air in the crawlspace. Now with the crawlspace clean and sanitized a plumber came and replaced the pipe. 

 

The homeowner so so happy to finally have this problem solved and her home protected! Another job well done by all the crew at Clean CrawlSpace Inc.

Grey Water Cleanup Napa, CA - Photo 1
Work Requests From Napa, CA
Project Location: Napa, CA
Water and moisture in crawl space
Project Location: Napa, CA
4 inches of still water in our crawl space. Would love for it to be drained asap.
Project Location: Napa, CA
Crawl space needs to be cleaned/ repaired
Project Location: Napa, CA
After the rains last month our crawl space is wet (muddy).
Project Location: Napa, CA
Our crawlspace is flooded and we are getting quotes to ensure that they doesn't keep happening. Thank you!
Project Location: Napa, CA
Bought a new home with a messy crawl space with rodent droppings and wall openings. Would like to get it cleaned up for future expansion.
Project Location: Napa, CA
Since it started raining we have a musty smell in our house coming from under the house. We are concerned about moisture.
Project Location: Napa, CA
Musky smell, water table rises in the winter need sump pump
Project Location: Napa, CA
Crawl space has underground water which is affecting wooden stairwell.
Project Location: Napa, CA
Drainage issue under house especially with recent wet winters. Musty smell in front Bedroom until ground dries out
Project Location: Napa, CA
Looking for vapor barrier installation for under condo crawl space.
Project Location: Napa, CA
Excess moisture in crawl space
Project Location: Napa, CA
I want my crawl space cleaned up. I think you guys did this for me many years ago, and it's time for a spring cleaning. My crawl space is at least 4+ feet, as this is an older home built on post foundation, ca, 1400 square feet or thee about
Project Location: Napa, CA
We're interested in getting sump pump/s installed in our crawl space that sees water after heavy rains. We think we are fairly close to water table. Interested in essentially an interior French drain in crawlspace to manage any water that try's to enter crawlspace. Open to encapsulation but want to make sure sumps are successful before proceeding to that step.
Project Location: Napa, CA
I'm looking to get an estimate on having a sump pump installed.
Project Location: Napa, CA
Musty smells in the house. Allergies
Project Location: Napa, CA
We'd like to install a vapor barrier in the crawl space under our house.
Project Location: Napa, CA
I need my crawlspace checked for water and mold, and if found, would like to create a waterproof barrier.
Project Location: Napa, CA
Flooding crawl space, moisture in crawl space, high humidity in home
Project Location: Napa, CA
Recently purchased a house in the past year and our crawlspace does not have any sort of moisture/vapor barrier. Would like to get a quote on installing a new vapor barrier and discuss if we need a sump pump. Thanks!
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