10/15/2026
🏠💧 CRAWLSPACE HUMIDITY: TOO MUCH OR TOO LITTLE CAN DAMAGE YOUR HOME!
Did you know that the humidity underneath your home can have a major impact on its structural integrity?
Most homeowners know that excessive moisture in a crawlspace is bad, but what many don’t realize is that extremely dry conditions can create problems too!
💦 TOO MUCH HUMIDITY
When your crawlspace stays excessively humid, moisture can begin affecting the wooden structure supporting your home.
❌ Wood rot and deterioration
❌ Mold and mildew growth
❌ Sagging or weakened floor joists
❌ Musty odors entering your living space
❌ Increased risk of wood-destroying pests
❌ Moisture damage to subflooring and insulation
🏜️ TOO LITTLE HUMIDITY
Believe it or not, excessively dry conditions can also affect your home’s framing!
❌ Excessive drying and shrinking of floor joists and framing lumber
❌ Gaps developing between wooden components
❌ Increased cracking, splitting, and checking in wood
❌ Squeaky floors caused by wood movement
❌ Seasonal movement that can affect flooring and finishes
⚠️ THE GOAL ISN’T TO REMOVE EVERY BIT OF MOISTURE!
Wood naturally absorbs and releases moisture depending on its environment. When humidity levels change dramatically, that wood expands and contracts.
Over time, excessive moisture or extreme drying can contribute to structural and flooring problems.
🎯 WHAT’S THE IDEAL HUMIDITY?
For many properly sealed and conditioned crawlspaces, maintaining relative humidity around 45%–55% is a reasonable target.
The goal is consistent moisture control, not making the crawlspace as dry as possible.
⚾ HOW CAN HOME RUN HELP?
At Home Run Heating, Cooling and Electrical, our experts can evaluate your crawlspace and recommend solutions to help protect your home.
✅ Professional crawlspace encapsulation
✅ Properly sized crawlspace dehumidifiers
✅ Heavy-duty v***r barriers
✅ Sealing crawlspace vents and unwanted outside air infiltration
✅ Monitoring and controlling moisture levels
Your crawlspace is the foundation of your home’s comfort, and the wooden structure above it deserves protection!
Whether your crawlspace is holding too much moisture or experiencing excessive drying, our team can help identify the problem and recommend the right solution.
⚾ Home Run Heating, Cooling and Electrical
Knocking home services out of the park!
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Home Run is the residential electrician, HVAC and crawlspace team for Covington, Conyers, McDonough, Madison, Monroe and Macon, GA. Call 678-937-3560.