HomeHomeowner ToolsHealthy Crawl Space Checklist

Healthy crawl space checklist

Ten things to look for under your home. If you can't check them all off, the space is likely costing you money in energy bills, air quality, or structural damage.

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Walk-Through Guide

Ten signs of a healthy crawl space

Bring a flashlight. If anything here gives you pause, we'll take a look for free — and you don't have to be home.

No standing water or damp soilThe ground under your home should be dry to the touch, even a day after heavy rain.
A sealed vapor barrier across the floorLook for heavy, intact plastic covering the whole floor and running up the walls — not torn scraps.
No musty or earthy smellIf you can smell the crawl space from inside the house, moist air is moving upward through your floors.
Dry, solid wood framingJoists and beams should sound solid and feel firm — not soft, spongy, crumbling, or hollow.
No visible mold or white efflorescenceDark staining on joists or white powder on block walls both point to ongoing moisture.
Humidity under controlSweating ducts and condensation on pipes mean humidity is high enough to grow mold and rot wood.
Insulation in place and drySagging or fallen insulation is usually a sign it absorbed moisture — and it stops working when wet.
A working sump pump where neededIf your home has one, it should be clean, plugged in, and ideally have a battery backup for storms.
Level, quiet floors aboveSloping, dipping, or bouncy floors point to weakened joists or settled supports underneath.
Water directed away from the foundationDownspouts and grading should carry water away — not dump it against your footing.

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Free Inspection & Consultation

Got moisture, mold, or a foundation problem?

You don't even have to be home. Call Trench Guys today for a 100% free inspection and an honest, no-pressure quote to protect your home.

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