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Crawl space condensation means you have a moisture problem in your crawl space. Moisture problems, or crawl space humidity, can be caused by loose access doors, a dirt crawl space or venting your crawl space. Crawl space condensation damages wood floor joists, ruins crawl space insulation and creates the perfect environment for bugs, dust mites, mold and mildew.

What Do I Need to Do First?

First you need to find the source of your crawl space problem. This process is messy and time consuming; forcing you to crawl around your damp or nasty crawl space to search for problem signs. Browse through the various problems signs on this page. Or, just give us a call at 866-370-4816 to make an appointment for a free crawl space inspection, and we'll do the dirty work.

Do You Have Crawl Space Condensation?

Click on the images below to view solutions.

What Causes Condensation Problems?

A condensation problem is caused when hot and cold air mix, creating crawl space humidity. When the air reaches 100% humidity – or is holding all of the water that it can – it has to "give up" its moisture, creating condensation.


You'll have a crawl space condensation problem if you have a dirt crawl space or there are outside openings to your crawl space like vents or loose access doors.

Venting Crawl Spaces

Venting Crawl SpaceDuring the warmer months, the air in your crawl space is typically much cooler than the outside air. The air in your crawl space is cooler because the ground maintains a steady temperature throughout the year –in the South Eastern United States the average ground temperature is around 52°F-62°F.

So, in the summer when you vent your crawl space you're letting hot air into the much cooler crawl space. When the hot and cold airs "Venting your crawl space could be costing you money! A vented crawl space could raise your electric bill by 15-25%"combine, it creates crawl space humidity. And when the relative humidity in your crawl space reaches 100%, crawl space condensation forms. The condensation damages insulation, HVAC duct work and wood, and is the primary cause of wood rot.

Venting your crawl space not only creates crawl space humidity and a crawl space condensation problem it results in expensive damage to your home and higher heating and cooling bills.

Dirt Crawl Space

Dirt Crawl SpaceDirt crawl spaces are cheaper and easier for home builders to install, and are popular for this very reason. The builder's money saving short-cut ends up costing you more in high electric bills and other crawl space problems.

The exposed dirt in your crawl space absorbs moisture from the air and sucks up moisture from below. As the damp soil dries, the moisture rises through your home, increasing the indoor relative humidity. High crawl space humidity also creates the perfect environment for mold, mildew, insects and dust mites.

We're Here To Help You Find The Best
Solutions For Your Crawl Space...

We will work with you every step of the way to make sure that you feel comfortable with your home's crawl space solution – from inspection and planning to installation and project completion.

Requesting your free inspection takes 60 seconds, and you can download your Free Homeowner's Guide to Crawl Space Repair immediately!

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Can I Fix My Crawl Space Condensation?

Crawl Space Condensation Wiping off the condensation from windows or pipes, and replacing wet crawl space insulation will not solve your condensation problem. Are you thinking about installing a thin crawl space vapor barrier? Don't bother, it'll only create a mess and more work for you.

Not all crawl space vapor barriers are created equal! The most commonly available vapor barrier is cheap and thin – like putting a trash bag in your crawl space. This thin crawl space vapor barrier tears easily and is a pain to replace, which you'll have to do often, and the cost will add up. Plus your crawl space condensation problem still won't be fixed!

Some contractors will recommend installing ventilation fans but that will only increase your crawl space condensation problem. The fans will push in hot air, creating more condensation by increasing crawl space humidity. So instead of fixing the problem, it only makes it worse.

What Do I Do Now?

JES Experts in Foundation RepairIt's important to your home's health to schedule a free inspection with a crawl space moisture management specialist.

One of our crawl space repair experts will thoroughly inspect your home's crawl space, pinpointing the source of your crawl space condensation problem. After the inspection they'll recommend an economical, customized solution for your home that will solve your crawl space humidity problem.

Crawl Space Condensation Solutions

If we find that you have a crawl space humidity problem we may recommend one of these solutions: CleanSpace, crawl space vent covers or SaniDry CX.


These products aren't always the solution to your crawl space humidity problem, so it's important to talk with an expert to find the best solution for your crawl space.


Our certified professional crawl space repair specialists will work with you, every step of the way, to design the best crawl space repair solution for your home's condensation problem. We want to hear your questions and concerns; after all we are here to help you find the best solution for you crawl space humidity problem.

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Crawl Space Repair Solutions

"I was extremely happy with all those on the work crew for the work they performed and their professionalism. They worked continuously until dark, sometimes working until after 7:30 pm. Their finished product is impressive and they left my wife and I so glad that we selected your company. Best of all, my wife who is highly allergic to mold and mildew, has been able to breathe better than she has since we bought the house, so this is great!"

~ Thomas S., Virginia Beach
"What a transformation in our crawlspace! If it was a little deeper, I would make it a living space in my house. I am not scared to go under the house anymore."

~ Georgina B., Alexandria, VA