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Wet Crawl Space Insulation 

Insulation keeps your home’s temperature comfortable, but it’s susceptible to moisture damage and mold if your crawl space isn’t encapsulated. If ignored, wet, moldy insulation causes high energy bills and poor air quality. 

Bay Area Underpinning serves cities near you including Oakland, Sacramento, San Jose, and surrounding areas. Trust us to replace and install your crawl insulation and for comprehensive crawl space encapsulation to keep insulation dry permanently. 

What Is Wet Crawl Space Insulation? 

Wet crawl space insulation occurs when moisture enters the crawl space and is absorbed by the insulation. Fiberglass insulation, commonly used in scrawl spaces, is especially susceptible to absorbing moisture due to its materials.  

Wet crawl space insulation results in several problems: 

Wet insulation damages your home’s structural integrity and overall efficiency. Make sure to address the problem as soon as possible. 

What Causes Wet Crawl Space Insulation?

Wet insulation happens when moisture is in the crawl space. But how does water get below your home?  

There are a few common ways water enters, including: 

  • Open vents, allowing in rain and humid air 
  • Warm outdoor air mixing with cool crawl space air, creating condensation 
  • Plumbing leaks 
  • Crawl space drainage problems 
  • Poor yard grading or faulty gutters 

These issues can cause the insulation to become soaked and ineffective. Bay Area Underpinning provides detailed evaluations to identify and address these root causes. 

Can You Fix Wet Crawl Space Insulation? 

To fix and prevent wet insulation, you need to prevent moisture from getting into the crawl space in the first place. This is best done with a comprehensive encapsulation system.  

Bay Area Underpinning provides homeowners in Northern California with an industry-leading crawl space encapsulation system. Ours also includes foam board insulation better suited for a crawl space environment.

How Bay Area Underpinning Fixes Wet Crawl Space Insulation 

Fixing wet crawl space insulation is best accomplished with encapsulation. Installing this system involves several steps: 

Working with Bay Area Underpinning ensures you receive customized solutions and the highest-quality service. Homeowners in Northern California have trusted us since 2005 for their crawl space needs! 

Why Address Wet Crawl Space Insulation Now 

Addressing wet crawl space insulation as soon as possible provides several long-term benefits: 

  • Preventing structural damage by managing moisture 
  • Enhancing energy efficiency 
  • Deterring pests 
  • Improving indoor air quality and reducing risks of mold and odors 
  • Protecting your property’s value 

Bay Area Underpinning’s unique solutions offer comprehensive treatment for wet crawl space insulation. 

Choose Bay Area Underpinning for Crawl Space Insulation Replacement and Installation near You! 

Proper insulation is crucial for safeguarding your home. Don’t let wet insulation lead to significant issues. Trust Bay Area Underpinning to transform your damp crawl space into a clean, dry area. 

Our experience, outstanding customer service, and industry-leading solutions have earned the trust of homeowners throughout Northern California. Contact us today for more information and to schedule a free crawl space inspection. 


No. Wet insulation loses its effectiveness immediately and it stays that way. Not to mention, wet insulation can harbor mold or pests even after drying. 

You shouldn’t attempt any crawl space repairs by yourself. Without the proper tools or training, you won’t solve the underlying moisture problem and may even cause injury to yourself. 

Repair costs vary based on the amount of damage and the size of your crawl space. Bay Area Underpinning provides a free inspection, so you know the exact price before work starts. 

Our Locations


2333 Courage Dr. Suite C
Fairfield, CA 94533

San Jose

1161 N Fair Oaks Ave
Sunnyvale, CA 94089