Humidity Control

Understanding Crawl Space Humidity in Alabama

crawlspace condensation thumbnail

When moist air enters a vented crawl space, condensation occurs on cool crawl space surfaces.

As the humidity levels rise in crawl spaces, moisture condensates on the surfaces, leading to serious problems in your home. These problems can lead to health issues and the need for expensive repairs.

Most of the problems traditionally associated with damaged, rotting crawl spaces are due to basic flaws in the ways that crawl spaces were designed. When you understand the effects of crawl space humidity, you can then take measures against it and learn how to prevent it in the future. 

To avoid the problems caused by humidity in your Alabama home, call in the professionals at AFS Foundation & Waterproofing Specialists for a free crawl space humidity estimate! We serve homeowners in Huntsville, Montgomery, Birmingham, Mobile and nearby.

How crawl space humidity begins

illustration of air movement from a crawl space into the home

When the frame of your home was first built, it was a large wooden box, with few, if any, holes in it.

Then came the other contractors. As plumbers, electricians, HVAC workers, and countless other professionals began to work in your home, they began to cut channels in your walls and floors. Pipes, wires, cables, ducts, and other things were passed through, and your home's construction was completed.

Then, over time, your home began to expand and contract. The once-tight seams began to warp slightly, and more crevices and openings appeared. There are a lot of openings that can develop between your first floor and your crawl space!

In your home, warm air rises, leaving through your attic and upper floors. As this happens, a vacuum is created on the lower floors. Air from the outside, and from your crawl space, is pulled upwards to fill the space.

If you have crawl space vents, they will also become part of the air movement in your home. As air is pulled out of the crawl space and up into the home, new air will be pulled in through these vents.

Here's the key point: If the air outside is wet or humid, then your crawl space vents are bringing in moisture.

What humidity does to a crawl space

mold and rot in a Montgomery crawl space

Wood that stays damp in a dark crawl space is an ideal mold habitat. Eventually, mold causes wood decay that can destroy structural parts of the house.

Crawl space humidity leads to all of the following problems in your home:

  • Rotting & Mold
  • Rusted, Corroded Metal
  • Odors & Allergens
  • Higher Utility Bills

As humidity builds in your crawl space, it creates an ideal space for mold and rot to grow.

As it does, all organic material in your crawl space will be damaged -- including wooden floorboards and structural support beams. A rotting crawl space will begin to sag, creating uneven floors above. In some extreme cases, sections of the floor may even begin to cave in! Additionally, many pests (termites, carpenter ants, wood-eating beetles, crickets, etc.) love rotting, moldy wood. Your open vents will be an invitation for them to infest your home.

As the mold and rot increase, and animals begin to live (and die) in your crawl space, odors will begin to rise into your home along with the crawl space air. Mold spores are a known allergen, and they can significantly affect anyone in the home who suffers from asthma or allergies.

During the hot summer months, crawl space humidity will also increase your home's cooling bills. Have you ever seen water dripping from a window-mounted air conditioner? This is because a large part of the job of an air conditioner is to dehumidify the air it cools. Humid air is much more expensive to cool than dry air.

Humidity crawl space control

Mold & Mildew Alert!

Mold needs three important things to survive:

  1. Warmth
  2. Moisture
  3. Food

Of these, the easiest to control in your home is moisture.

Fortunately, controlling crawl space humidity is easy! At AFS Foundation & Waterproofing Specialists, a crew of our crawl space contractors can usually install a moisture control system in less than a day.

We recommend starting by sealing those crawl space vents, then following up by installing a crawl space vapor barrier on the walls and floors. A crawlspace dehumidifier is a great finishing touch, drying out the space and helping you to best preserve your home.

Schedule a free estimate to reduce crawl space humidity!

At AFS Foundation & Waterproofing Specialists, crawl space repair is our specialty, and we'd like to show you why we're the best. To help you decide which repairs are best for you, we offer free crawl space repair quotes to homeowners in our area.

We serve Alabama, including Tuscaloosa, Huntsville, Dothan, Hoover, Columbus, Auburn, Decatur and many areas nearby. To schedule your free quote, contact us today!

Looking for a price? Get a no cost, no obligation free estimate.

our service area

We serve the following areas

Alabama
  • Bridgeport
  • Bryant
  • Dutton
  • Estillfork
  • Fackler
  • Flat Rock
  • Fort Payne
  • Gaylesville
  • Henagar
  • Higdon
  • Hollywood
  • Ider
  • Mentone
  • Pisgah
  • Rainsville
  • Stevenson
  • Sylvania
  • Valley Head
Georgia
  • Chickamauga
  • Cohutta
  • Crandall
  • Dalton
  • Flintstone
  • Fort Oglethorpe
  • La Fayette
  • Lookout Mountain
  • Lyerly
  • Menlo
  • Ringgold
  • Rising Fawn
  • Rock Spring
  • Rocky Face
  • Rossville
  • Sugar Valley
  • Summerville
  • Trenton
  • Trion
  • Tunnel Hill
  • Wildwood
Tennessee
  • Apison
  • Chattanooga
  • Guild
  • Harrison
  • Hixson
  • Ooltewah
  • Sequatchie
  • Signal Mountain
  • South Pittsburg
  • Whiteside
  • Whitwell
Our Locations:

AFS Foundation & Waterproofing Specialists
2415 Jordan Road
Huntsville, AL 35811
1-256-418-4540


AFS Foundation & Waterproofing Specialists
9079 US-78
Leeds, AL 35094
1-205-386-8803


AFS Foundation & Waterproofing Specialists
1802 Blythe Ave SE
Cleveland, TN 37311
1-423-933-1626


AFS Foundation & Waterproofing Specialists
25476 Friendship Rd
Daphne, AL 36526
1-251-299-2059