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Is It Normal to Have Moisture in My Crawl Space

Many homeowners wonder It is normal to have moisture in my crawl space? You might expect there to be a certain amount of moisture from humidity, flooding, or plumbing leaks within your crawl space, but is it normal for the crawl space to be damp?  Many people don’t realize that over half of the crawl space air makes its way into their living space. Having high humidity in your crawl space also makes the humidity in your home high.

moisture in crawlspace under home

Crawl Space Humidity Affects Your Home

Having the humidity at a reasonable level can improve indoor air quality. Keeping the humidity under control in your crawl space helps to lower the risk of bacteria, mold, virus, and other indoor air quality pollutants in your home. The stack effect will move the air from the bottom of your home to the top. If your basement or crawl space is damp, chances are the rest of your home is suffering as well. Dehumidification is one of the best ways to ensure your home is dry all year.

Controlling Crawl Space Humidity

Installing a crawl space dehumidifier is the first thing we recommend when correcting a moisture in a crawl space. When doing crawl space repair, installing dehumidifiers and sump pumps, sealing the vents, and air sealing the sub-floor is vital.

Many crawl space contractors frown upon the installation of dehumidifiers. They have been taught vent fans and plastic are all that is needed to control crawl space humidity. We agree they are vital in controlling crawl space moisture, but a dehumidifier is the key to making sure humidity is controlled all year.

Many people believe that dehumidifiers will cause their energy bills to increase. Many studies have shown that lower humidity actually should decrease the energy consumption of your home. When heating and cooling your home, installing a dehumidifier is not only a great way to control moisture but also improve energy efficiency. It is easier for the HVAC system to cool and warm air that has low humidity.

Wet Crawl Spaces and Flooding

A flooded crawl space can cause humidity to higher than normal. Standing water is not the only source for high humidity in the crawl space, but is certainly one of the top sources. By controlling the flooding of the crawl space you can improve the overall humidity of your home.

Using sump pumps and a draining systems along with properly installed vapor barrier and a dehumidifier will improve the humidity of your crawl space and the overall air quality of your home.

Do you need help fixing your crawl space or basement? If so, we can help. Please contact us to schedule your assessment.

Just had Fresh Air Tech address and resolve a chronic moisture problem in our crawlspace. I'm very pleased with the entire process. Company owner Jay is the opposite of the pushy salesmen we spoke with at other outfits. And my final invoice was less than we agreed to, because the Fresh Air crew found a way to solve one of my issues with less labor and therefore a reduced price. Happy to recommend these guys.
Frank Alexander
Frank Alexander
16:48 23 Oct 23
Knowledge based company with excellent customer service, efficient response and work quality. Loved each tech I worked with, they put human in the definition of being human. Can't stand scripted robotic responses and you won't find it here.
Makhi Mitchell
Makhi Mitchell
00:55 18 Nov 19
Amazing work. Bought a house built in the 60s that had never had ducts cleaned. Before and after pictures blew me away. Crew was so professional. Recommend Highly!
Renee Shumaker
Renee Shumaker
02:32 15 Jul 18
Este lugar me da buenos opciones..
Florencio Solano
Florencio Solano
22:26 17 Aug 17
I recently discovered a mild mold problem in my crawlspace and begin my search for a company to remediate. Fresh Air Tech. seemed to have the best treatment plan for my situation and was the most competitive when it came down to the price. I had the mold removed/sprayed with prevention chemicals, crawlspace cleaned with a new vapor barrier and a dehumidifier installed. I didn't know what to expect never having to deal with this before but I can ensure you these guys do not cut corners and did an excellent job. The cleaning crew (3 guys) arrived about 8AM and were under the house until about 4:45PM cleaning and sanding taking a quick 30 minute lunch break around noon. They returned the next day to install the vapor barrier and to finish cleaning up. The dehumidifier also comes with a monitor that displays the temp and moisture level down in the crawlspace which i thought was pretty cool. Excellent job, thanks again team.
Gary Young
Gary Young
03:16 14 Aug 17
Great company - thanks Neil & team for a job well done!
Carl Zimmerman
Carl Zimmerman
15:31 26 Jun 15
Mike, your page is looking Great!
Geary Morris
Geary Morris
15:10 31 Oct 13

Free Inspection Services

Fresh Air Technologies provides Charlotte area clients a FREE 11-point Attic & Crawl Space Inspection Report! Please contact us for a free air quality estimate and free air quality inspection services.

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