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Your Guide to Relative Humidity

In a previous article, we tackled the question, “How to Dry Out a Crawl Space and Manage Humidity Levels?“

Now, we’re going to take a step back and answer, “What is relative humidity?”

The answer is straightforward, so let’s dive right in.

What Is Relative Humidity?

Relative humidity measures the amount of moisture in the air compared to the maximum amount the air can hold at a given temperature.

It’s expressed as a percentage; for example, if the relative humidity is 50%, the air is holding half of the moisture it can at that temperature. Warmer air can hold more moisture than cooler air, so relative humidity changes with temperature fluctuations. Understanding relative humidity is important because high levels can lead to problems like mold growth, condensation, and wood rot, especially in areas like basements and crawl spaces.

How to Measure Relative Humidity and Protect Your Home

Measuring relative humidity in your home is easy with a hygrometer, a small device that reads the moisture level in the air. Hygrometers are inexpensive and can be placed in areas like basements, crawl spaces, or living rooms to monitor humidity levels.

High humidity can negatively affect your home by promoting mold and mildew growth, damaging walls, ceilings, and floors, and posing health risks.

Excess moisture can also cause wood to warp or rot, damage insulation, and create an environment that attracts pests like termites. Keeping an eye on relative humidity helps you take action before these issues escalate.

Understanding Relative Humidity & Its Impact on Your Home

In this post, we answered the question, “What is relative humidity?” We explained that relative humidity measures the moisture in the air compared to its maximum capacity at a given temperature. High humidity can lead to problems like mold, mildew, wood rot, and pest infestations, so keeping an eye on humidity levels is crucial for maintaining a healthy home.

There’s much more to learn about humidity’s impact on your home. In our next article, we’ll dive into the differences between wood rot and mold.

If you need basement or crawl space waterproofing, Foundation Recovery Systems offers a quick, easy, and completely FREE inspection—just click the button below to get started!

FAQs

The cost varies based on the size and condition of your crawl space, as well as necessary repairs. Foundation Recovery Systems offers free inspections, no-obligation quotes, and financing options to accommodate your budget.

Keeping humidity levels within 40-60% is crucial to prevent mold growth. For expert guidance on maintaining such levels, reach out to Foundation Recovery Systems.

A humidity range of 40 to 50 percent is optimal. Lower levels can cause uncomfortable dry air, while higher levels promote mold growth and other moisture issues. A professionally installed crawl space dehumidifier, combined with waterproofing and encapsulation methods, is essential. Contact Foundation Recovery Systems for a free inspection and estimate. 

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We asked Foundation Recovery Systems to come and do an inspection of our basement because we knew we were having foundation issues. They sent Chris Vanderpool, who helped us understand everything that was going on and took the extra time to stop and answer questions — he even got his hands dirty to help us get more important answers. He did not pressure us, and he gave us a very reasonable window to decide if we’re going to proceed with FRS for their services.

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Derrick Bushnell, Gavin Bonar, Robert Talty did a great job at my house. They worked very hard.

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Jake and KD did an outstanding job for us. Worked late to finish the job and did an outstanding job. No detail left undone.

Jake and KD did an outstanding job for us. Worked late to finish the job and did an outstanding job. No detail left undone.

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Sam came out and did a very thorough inspection and informed me on everything going on with my home. He was super helpful and knowledgeable …

Sam came out and did a very thorough inspection and informed me on everything going on with my home. He was super helpful and knowledgeable about the issues I am experiencing and the products they used to permanently fix my issues. I would highly recommend foundation recovery systems.

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A wonderful experience from the time I called and spoke with the very helpful scheduler. Cody was prompt, professional and was very…

A wonderful experience from the time I called and spoke with the very helpful scheduler. Cody was prompt, professional and was very helpful in diagnosing the problem. He did a great job of communication throughout the process. Highly recommend

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Michael Williams, Tyler Bennett, and Kanen Carlson came to lift my screened in porch. They explained everything they were going to do and…

Michael Williams, Tyler Bennett, and Kanen Carlson came to lift my screened in porch. They explained everything they were going to do and they kept me informed while they were working on the foundation. When I had questions they were happy to answer them. They were all really friendly and knowledgeable.

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Kyle H. And crew were very prompt and braved the bitter cold to complete our foundation repair early. We were quoted 2 days for repair and…

Kyle H. And crew were very prompt and braved the bitter cold to complete our foundation repair early. We were quoted 2 days for repair and they were able to repair it in less than a full day and went above and beyond on replacing french drain that had to be removed to make way for the repairs. Excellent service!

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Ryan, Alex, and Kyler did a GREAT job on our foundation repair and were wonderful to work with! They were incredibly thorough and…

Ryan, Alex, and Kyler did a GREAT job on our foundation repair and were wonderful to work with! They were incredibly thorough and completely transparent through the entire process to make sure there were no surprises. We're very pleased with their work! I was expecting a MUCH bigger mess in our yard, but was pleasantly surprised at how they left it! Thanks guys!!

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Excellent. The men from the Moberly office did a great job. Very professional. They installed both helical and push piers. An investment…

Excellent. The men from the Moberly office did a great job. Very professional. They installed both helical and push piers. An investment for when I go to sell my house. I sleep well at night, now. Good job Gered!

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Every aspect was professional and fast. We are very happy with the results. We had our driveway leveled and stabilized. The driveway…

Every aspect was professional and fast. We are very happy with the results. We had our driveway leveled and stabilized. The driveway looks like it did when it was new. It was only a week from the estimate to the finished job. The entire process was painless.

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Kevin Macdonald was very knowledgeable and informative.I learned a lot from him about home foundations.

Kevin Macdonald was very knowledgeable and informative.I learned a lot from him about home foundations.

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Justin worked hard for me. He was very detailed with his inspection. He knows his stuff! Gave me a fair price and the confidence that the…

Justin worked hard for me. He was very detailed with his inspection. He knows his stuff! Gave me a fair price and the confidence that the job will be done correctly. Im looking forward to the upcoming work. 🙂

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Kurk was prompt and, like every single person we’ve dealt with at FRS, very professional. He is a thorough job and was very…

Kurk was prompt and, like every single person we’ve dealt with at FRS, very professional. He is a thorough job and was very helpful. However, not happy to learn, 1-1/2 year after repairing my driveway, with the understanding that this was guaranteed for 5 years , that now an annual service plan is recommended so an additional and unexpected cost.

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Al came to our house on different occasions for different reasons to inspect or house. He truly gave us his honest opinion. He didn't do a…

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Matthew and Leland did an awesome job on our foundation repair and the lift on our porch! They were very thorough and knowledgeable in…

Matthew and Leland did an awesome job on our foundation repair and the lift on our porch! They were very thorough and knowledgeable in answering all of our questions throughout the lengthy process. We're very pleased with their work. I was expecting a huge mess in our yard after completion but we were pleasantly surprised and how “cleaned up” everything was. Thank you Matthew and Leland for a job well-done! Thanks also to Barry for always getting back to me in such a timely manner with my plethora of questions before the job began!

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Took time to explain the process. Very personable

Took time to explain the process. Very personable

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The worker did an outstanding job making the repairs. The concrete slabs are now level and properly caulked. I highly recommend this…

The worker did an outstanding job making the repairs. The concrete slabs are now level and properly caulked. I highly recommend this company.

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Highly recommend this team – Lee, Camryn, and Ayden were incredibly professional, courteous, and friendly while they fixed the issues I was …

Highly recommend this team – Lee, Camryn, and Ayden were incredibly professional, courteous, and friendly while they fixed the issues I was concerned with… you’ll be in great hands

Leah Leitow

Leah Leitow

Content Writer

Leah is a Content Writer for Groundworks with more than ten years of experience working in the foundation repair industry. Her experience ranges from working with homeowners to find the right solution to training inspectors and staff. In her background as a Michigan journalist, she gained invaluable insight into people's lives throughout our state. Leah lives in metro Detroit with her husband and two sons.

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Our Locations

Cedar Rapids

3349 Southgate Ct SW,
Cedar Rapids, IA 52404
(319) 220-5034

Central Illinois

14678 E 925 North Rd, Building 5
Bloomington, IL 61705

Des Moines

6300 NW Beaver Dr.
Johnston, IA 50131
(515) 373-8491

Kansas City

7280 NW 87th Terrace, Suite C-210
Kansas City, MO 64153
(816) 774-1539

Lee's Summit

211 SE State Route 150
Lee's Summit, MO 64082
(816) 774-1539

Moberly

1872 State Hwy M
Moberly, MO 65270
(660) 202-8662

Springfield

3020 N. Martin Ave.
Springfield, MO 65803
(417) 612-8286

St. Louis

1625 Larkin Williams rd.
Fenton, MO 63026
(314) 207-9995