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HBO and The Ringer's Bill Simmons hosts the most downloaded sports podcast of all time, with a rotating crew of celebrities, athletes, and media staples, as well as mainstays like Cousin Sal, Joe House, and a slew of other friends and family members who always happen to be suspiciously available.
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Content provided by Michael Church, Founder of Crawl Space Ninja, Michael Church, and Founder of Crawl Space Ninja. All podcast content including episodes, graphics, and podcast descriptions are uploaded and provided directly by Michael Church, Founder of Crawl Space Ninja, Michael Church, and Founder of Crawl Space Ninja or their podcast platform partner. If you believe someone is using your copyrighted work without your permission, you can follow the process outlined here https://staging.podcastplayer.com/legal.
ver wondered why “dormant mold” keeps coming back the moment the seasons change? We pull back the curtain on what dormant really means, why 50–55% humidity isn’t a cure by itself, and how a moldy subfloor turns into a hidden hazard when spray foam goes on too soon.
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AJ joins me to tackle a real homeowner question from a 1927 house with a tight crawl space and visible mold. We break down the fruiting-body concept so you understand what you’re seeing versus what’s inside the wood, then dig into wood moisture content, leak pathways, and the blind spots created by covering the subfloor. You’ll hear why foam is great for targeted air sealing at penetrations and rim joists, but risky when used to blanket a subfloor that hasn’t been remediated and dried. We share simple checks for toilet flange leaks, ice-maker lines, laundry connections, and bath drains—plus why you should listen for drip sounds on plastic ground covers as an early warning.
From there we lay out the correct order of operations: remove visible growth, eliminate the moisture source, apply a root-killing treatment, verify dryness with a moisture meter, then insulate smart. Instead of burying problems, focus on sealing big gaps, insulating crawl space walls to reduce the stack effect, and keeping the subfloor visible for inspection. We talk practical targets for wood moisture, sizing dehumidification, and how to balance energy savings with long-term durability in older homes.
If you’ve ever been told to “just keep humidity under 55 and spray foam it,” this conversation will save you money and headaches. Hit play to get a clear plan for mold remediation, moisture control, and crawl space insulation that protects your home for the long haul. If this helped, subscribe, share it with a neighbor, and leave a quick review—what’s your biggest crawl space question right now?
Check out Michael's book, "Crawl Space Repair Myths-Busted" now available on Amazon!
Schedule a consultation: https://buymeacoffee.com/csninja/extras
Need help: https://crawlspaceninja.com or https://supply.crawlspaceninja.com
Chapters
1. Welcome And Topic Setup (00:00:00)
2. The Listener’s 1927 Crawl Space Dilemma (00:00:41)
3. What Dormant Mold Really Means (00:01:18)
4. Fruiting Bodies And Moisture Reality (00:02:40)
5. Why Spray Foam Over Mold Backfires (00:04:00)
6. Better Strategy: Air Seal And Wall Insulate (00:05:26)
7. Keep Wood Exposed For Leaks And Drying (00:07:12)
8. Final Advice And Resources (00:09:19)
56 episodes
