Serving Fremont, San Jose, San Francisco

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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
Before and After Pictures from Portola Valley
Conquer Rainwater in Your Crawl Space, Portola Valley, CA

Conquer Rainwater in Your Crawl Space, Portola Valley, CA

Before After
Conquer Rainwater in Your Crawl Space, Portola Valley, CA Conquer Rainwater in Your Crawl Space, Portola Valley, CA

Jeffrey L., a homeowner in Portola Valley, California, faced a common yet concerning issue: water in his crawlspace. Recognizing the potential for serious damage, Jeffrey took immediate steps to address the problem and prevent future concerns by calling in the professionals at Clean Crawlspace.

 

First, Clean Crawlspace installed two water intrusion alarms to provide early detection of any future water entry, allowing him to take swift action and prevent further damage. Additionally, Jeffrey chose to encapsulate his entire crawlspace with a CleanSpace vapor barrier system. This comprehensive solution creates a barrier against moisture from the ground, preventing water vapor from entering the living space and protecting the home's foundation, structure, and air quality. By combining proactive monitoring and comprehensive encapsulation, Jeffrey has taken crucial steps to safeguard his home from the damaging effects of water in the crawlspace.

Happy Customers Surrounding Portola Valley, CA
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Trusted Crawl Space Company Serving Portola Valley, CA & Nearby

Crawl Space Repair & Encapsulation in Portola Valley, CA

Since 2003, Clean CrawlSpace Inc. has helped homeowners in Portola Valley, 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 Portola Valley, 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 Portola Valley

  • 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 Portola Valley, CA by delivering professional crawl space encapsulation, sump pump systems, drainage, dehumidifiers, and mold treatment that last. Schedule your free estimate today!

Job Stories From Portola Valley, CA
Conquer Rainwater in Your Crawl Space, Portola Valley, CA

Jeffrey L., a homeowner in Portola Valley, California, faced a common yet concerning issue: water in his crawlspace. Recognizing the potential for serious damage, Jeffrey took immediate steps to address the problem and prevent future concerns by calling in the professionals at Clean Crawlspace.

 

First, Clean Crawlspace installed two water intrusion alarms to provide early detection of any future water entry, allowing him to take swift action and prevent further damage. Additionally, Jeffrey chose to encapsulate his entire crawlspace with a CleanSpace vapor barrier system. This comprehensive solution creates a barrier against moisture from the ground, preventing water vapor from entering the living space and protecting the home's foundation, structure, and air quality. By combining proactive monitoring and comprehensive encapsulation, Jeffrey has taken crucial steps to safeguard his home from the damaging effects of water in the crawlspace.

Conquer Rainwater in Your Crawl Space, Portola Valley, CA - Photo 1Conquer Rainwater in Your Crawl Space, Portola Valley, CA - Photo 2Conquer Rainwater in Your Crawl Space, Portola Valley, CA - Photo 3Conquer Rainwater in Your Crawl Space, Portola Valley, CA - Photo 4
Conquer Rainwater in Your Crawl Space, Portola Valley, CA

Jeffrey L., a homeowner in Portola Valley, California, faced a common yet concerning issue: water in his crawlspace. Recognizing the potential for serious damage, Jeffrey took immediate steps to address the problem and prevent future concerns by calling in the professionals at Clean Crawlspace.

 

First, Clean Crawlspace installed two water intrusion alarms to provide early detection of any future water entry, allowing him to take swift action and prevent further damage. Additionally, Jeffrey chose to encapsulate his entire crawlspace with a CleanSpace vapor barrier system. This comprehensive solution creates a barrier against moisture from the ground, preventing water vapor from entering the living space and protecting the home's foundation, structure, and air quality. By combining proactive monitoring and comprehensive encapsulation, Jeffrey has taken crucial steps to safeguard his home from the damaging effects of water in the crawlspace.

Conquer Rainwater in Your Crawl Space, Portola Valley, CA - Photo 1Conquer Rainwater in Your Crawl Space, Portola Valley, CA - Photo 2Conquer Rainwater in Your Crawl Space, Portola Valley, CA - Photo 3Conquer Rainwater in Your Crawl Space, Portola Valley, CA - Photo 4Conquer Rainwater in Your Crawl Space, Portola Valley, CA - Photo 5
Work Requests From Portola Valley, CA
Project Location: Portola Valley, CA
New construction home. Looking to add crawlspace encapsulation
Project Location: Portola Valley, CA
I have a 300 sq foot crawlspace that needs encapsulation and ventilation.
Project Location: Portola Valley, CA
Hello! The house is in Portola valley. The soil in the crawl space if humid/wet, it's smelly/musty/humid, we have seen rodents (squirrels digging holes from the outside and playing in the crawl space, then mouses going through those holes). We are wondering if there is a different solution than a "rat slab" to keep the space clean and sealed.
Project Location: Portola Valley, CA
Looking for crawl space waterproofing
Project Location: Portola Valley, CA
We recently purchased a home and the crawl space was encapsulated (vinyl sheet and sump pump) at some point in the past. However, the crawl space smells not great, and we are getting the smell in the house through the vents and air returns associated with the ducts that run through the crawl space. We are hoping that there may be something we can do to mitigate the smell. The area appears to be dry, but we cant see under the sheeting and there is no ventilation to allow for fresh air to get in.
Project Location: Portola Valley, CA
A recent home inspection recommended a french drain and installing a vapor barrier in the crawl space. It is not urgent but to have this done for the long term. We are ready to start this project now
Project Location: Portola Valley, CA
I have three crawlspace areas that need a vapor barrier installed
Project Location: Portola Valley, CA
Would like a vapor barrier and rodent protection for crawlspace. Single family home.
Project Location: Portola Valley, CA
I have a crawl space under one room in my home, the rest is a slab. I would like to get an evaluation and estimate fo this crawl space.
Project Location: Portola Valley, CA
Mold remediation scheduled and we need to install a vapor barrier
Project Location: Portola Valley, CA
Wet dirt in portion of crawl space
Project Location: Portola Valley, CA
Having some water issues underneath our house.
Project Location: Portola Valley, CA
Check on existing sump pump
Project Location: Portola Valley, CA
Minor flooding from crawlspace into basement during heavy rains
Project Location: Portola Valley, CA
A lot of dirt and dust in crawl space where HVAC system is, considering vapor barrier or other install
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