Crawl Space Hygrometer: How to Read Humidity Numbers
What a crawl space hygrometer tells you, which humidity ranges EPA and Building America cite, what a federal study logged in real…
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Latest crawl space guides
Practical guides for moisture, water, encapsulation, foundation repairs, and project costs.
Crawl Space Access Door: Size, Sealing and What to Check
What DOE guidance and the model code say about crawl space access doors and hatches: minimum sizes, how to seal and insulate…
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Crawl Space Flood Vents: What Changes in a Flood Zone
If your home is in a flood zone, sealing crawl space vents is not simple. What FEMA's Technical Bulletin 1 says about…
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Radon and Your Crawl Space: Test First, Then Decide
Radon and crawl spaces: what the EPA says about risk and action levels, what federal retrofit reports say about crawl space air,…
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Crawl Space Fans: Do They Work, and When Do They Make Sense?
Do crawl space fans work? What a federal retrofit report and the model code say about exhaust fans, their limits, and what…
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Crawl Space Vents: Should They Be Open or Closed?
Should crawl space vents be open or closed? A decision guide based on U.S. Department of Energy research, model code language and…
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Musty Smell From a Crawl Space: Causes, Checks and When to Call a Pro
A musty smell from the crawl space usually means moisture. Learn what to check, what not to do, and when to call…
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Do You Need a Sump Pump in a Crawl Space?
A crawl space sump pump removes liquid water that collects in a low point and moves it away from the house. It…
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Crawl Space Insulation: Where It Belongs and What Gets Removed
Insulation is thermal control, not a water-management fix. Here is how to match the placement to your crawl space type, decide what…
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Crawl Space Drainage: Choosing a Fix for Recurring Water
Crawl space drainage is about liquid water, not humidity or vapor. This guide separates the five water paths, compares the common drainage…
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