Skip to Main Content

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. 

Related Resources

Award-Winning Service

Groundworks, LLC BBB Business Review

  • 5/
  • 5/
  • 5/
  • 5/
  • 5/
Review Logo

From sales to finish line, FRS was great. The crew who did our work (Cory, Will, and Clayton) got the work done timely and professionally….

From sales to finish line, FRS was great. The crew who did our work (Cory, Will, and Clayton) got the work done timely and professionally. Everyone was friendly and happy to explain the process.

Greta Bassett-Seymour

  • 5/
  • 5/
  • 5/
  • 5/
  • 5/
Review Logo

Austin Benton was amazing to work with. Thorough, transparent, efficient, and polite. 10 out of 10 experience working with him and his team….

Austin Benton was amazing to work with. Thorough, transparent, efficient, and polite. 10 out of 10 experience working with him and his team. Would highly recommend to anyone who needs small or large jobs taken care of properly.

  • 5/
  • 5/
  • 5/
  • 5/
  • 5/
Review Logo

The Foundation Recovery Systems crew that straightened and anchored our basement wall was the best. Mike Williams, foreman, Tyler Bennett, …

The Foundation Recovery Systems crew that straightened and anchored our basement wall was the best. Mike Williams, foreman, Tyler Bennett, co-foreman, and Kanen Carlson, installer, were very professional, polite, and knowledgeable. They explained every step in the process, and did an outstanding job. They called to let us know they were on the way and arrived promptly, worked steadily all day, and completed our project as promised. I highly recommend Mike, Tyler, and Kanen for all your foundation needs.

  • 5/
  • 5/
  • 5/
  • 5/
  • 5/
Review Logo

Grant Butler did a thorough inspection of concrete in need of lifting and stabilizing at my home. He was knowledgeable, professional, and…

Grant Butler did a thorough inspection of concrete in need of lifting and stabilizing at my home. He was knowledgeable, professional, and courteous. Grant took time to listen to my concerns and then addressed them. The whole process was pleasant.

  • 5/
  • 5/
  • 5/
  • 5/
  • 5/
Review Logo

These guys kick butt and take names!! Worth every penny! From the moment they answer that call, you know it’s gonna be O.K! Amazing…

These guys kick butt and take names!! Worth every penny! From the moment they answer that call, you know it’s gonna be O.K! Amazing Work! HONEST AND RELIABLE, VERY PROFESSIONAL, They take pride in there work, you won’t get a better team at your house, I promise you that. Don’t settle for anything less or you’ll be doing it twice and wish you had called them first! They showed EVERYONE else up and OUT! Extremely Happy, They saved this house, and me in it! Thank you to your Entire Team! Forever Grateful! Randy Smith, the maintenance techs, The guys who came in and did the work were EXCEPTIONAL, Hard Workers, did a PERFECT JOB THE FIRST TIME!!! And just awesome guys! Thanks again. K & J

  • 5/
  • 5/
  • 5/
  • 5/
  • 5/
Review Logo

Blake an Gandie did a amazing job above and beyond what I had expected to great assets to your company highly recommended! Thank you…

Blake an Gandie did a amazing job above and beyond what I had expected to great assets to your company highly recommended! Thank you Foundation recovery systems!

  • 5/
  • 5/
  • 5/
  • 5/
  • 5/
Review Logo

Dakota was honest and did not attempt to just get a sale If his suggestion does not work I will be calling him Great Service

Dakota was honest and did not attempt to just get a sale If his suggestion does not work I will be calling him Great Service

  • 5/
  • 5/
  • 5/
  • 5/
  • 5/
Review Logo

Jeremy Higgins from Foundation Recovery Systems is very professional and informative regarding foundation issues. He explained to me our…

Jeremy Higgins from Foundation Recovery Systems is very professional and informative regarding foundation issues. He explained to me our foundation problems and what choices we could make to solve the problems. He provided options that I could choose based on my budget and when I wanted to fix the problems, whether all at once or over time.

  • 5/
  • 5/
  • 5/
  • 5/
  • 5/
Review Logo

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!

  • 5/
  • 5/
  • 5/
  • 5/
  • 5/
Review Logo

We had Foundation Recovery complete the work on our foundation that was caused by settling. We had 5 piers placed deep into the ground…

We had Foundation Recovery complete the work on our foundation that was caused by settling. We had 5 piers placed deep into the ground thru the basement concrete floor. The job was completed by Travis Clark and Justin Geigling. They were a great team. Travis took the lead and did a great job of discussing the plan with us and keeping us informed if any changes were needed. He and Justin worked very hard on the job. They left the job site clean and everything in order. They were a pleasure to work with and Travis was knowledgeable and helpful. We are very pleased with Foundation Recovery Systems.

  • 5/
  • 5/
  • 5/
  • 5/
  • 5/
Review Logo

Jeremy from Foundation Recovery Systems came out promptly for an issue with water in our basement. He was professional, knowledgeable, and…

Jeremy from Foundation Recovery Systems came out promptly for an issue with water in our basement. He was professional, knowledgeable, and took the time to clearly explain everything. Great communication and service—highly recommend reaching out to him if you’re in the market!

  • 5/
  • 5/
  • 5/
  • 5/
  • 5/
Review Logo

We hired Foundation Recovery to brace one wall and anchor another in our basement. The team (Cliff, Riley, and Nolan) was professional,…

We hired Foundation Recovery to brace one wall and anchor another in our basement. The team (Cliff, Riley, and Nolan) was professional, timely, and cleaned up well. They explained the procedure well, and even gave us some tips on how to better water proof and pest proof the walls. We were very happy with the services provided by them!

  • 5/
  • 5/
  • 5/
  • 5/
  • 5/
Review Logo

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…

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 sells pitch or make thing look worst than they were. He actually gave us a piece of mind about issues with our house. This company did my waterproofing work in our basement and I'm very happy that I have a very dry basement, which I never had since becoming owners of this home. I've actually recommended them to others.

  • 5/
  • 5/
  • 5/
  • 5/
  • 5/
Review Logo

We are very pleased with the service we received! These young men were very punctual, thorough, knowledgeable and professional. They were…

We are very pleased with the service we received! These young men were very punctual, thorough, knowledgeable and professional. They were even polite when I asked the same questions repeatedly. lol Big shout out to CJ Schlater, Aundra Butner and Duncan Zimmer! Our house is no longer sinking away.

  • 5/
  • 5/
  • 5/
  • 5/
  • 5/
Review Logo

Jared Wyatt was very helpful, informative, and was willing to explain every question we brought up.

Jared Wyatt was very helpful, informative, and was willing to explain every question we brought up.

  • 5/
  • 5/
  • 5/
  • 5/
  • 5/
Review Logo

This company was fantastic! From the very beginning Adam took his time and walked us through every detail and showed us what needed to be…

This company was fantastic! From the very beginning Adam took his time and walked us through every detail and showed us what needed to be repaired. He was patient, honest, informative, and professional. The crew that did our work came out fast and when they were done cleaned up everything that was taken apart. The communication with this company is the best I’ve ever dealt with. Every single person I talked with through all stages of our project was so courteous and professional. I cannot recommend this company enough. I am so impressed with them especially nowadays when good honest work is hard to come by. An outstanding company!

  • 5/
  • 5/
  • 5/
  • 5/
  • 5/

Mason Tinney done a excellent job with my annual maintenance service making sure everything was working properly and went out of his way to …

Mason Tinney done a excellent job with my annual maintenance service making sure everything was working properly and went out of his way to take care of a couple of issues he noticed.

  • 5/
  • 5/
  • 5/
  • 5/
  • 5/
Review Logo

Had some sidewalk slaps lifted and concrete joints around pool resealed w/sand finish. Crew did a great job. Plus very respectful and…

Had some sidewalk slaps lifted and concrete joints around pool resealed w/sand finish. Crew did a great job. Plus very respectful and polite. High recommended and will use them again

  • 5/
  • 5/
  • 5/
  • 5/
  • 5/
Review Logo

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!

  • 5/
  • 5/
  • 5/
  • 5/
  • 5/
Review Logo

Neil F., Gary D., Tory H., and Billy D. did an outstanding job of evaluating and executing work to install several piers at my son's home. …

Neil F., Gary D., Tory H., and Billy D. did an outstanding job of evaluating and executing work to install several piers at my son's home. They were very professional and knowledgable in explaining the process and exhibited great teamwork. I am very confident that the foundation is now secure and all issues resolved. I highly recommend Foundation Recovery Systems.

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.

Publish Date:

Last Modified Date:

FRS service area

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