“Even busted out the moisture meter (which, by the way, is now my favorite weird homeowner gadget). It kinda worked, but I still get nervous about what’s lurking inside the walls...”
I hear you on the paranoia—once you’ve had a wet wall, you never really trust it again. Had a similar mess with cellulose years back. Pulled off the baseboards, drilled a few holes, and ran a couple of those high-velocity air movers for days. Still ended up replacing half the insulation because the smell wouldn’t quit. Closed-cell foam’s pricey but it’s a mold-phobe’s dream compared to soggy denim or fiberglass. Sometimes it really is “just rip it out and start over.”
“Still ended up replacing half the insulation because the smell wouldn’t quit.”
That’s usually the way it goes. Once that musty smell sets in, you’re fighting a losing battle. High-velocity air movers help, but if you can’t get behind the walls or under the floor, you’re just drying the surface. I’ve seen folks try to save old insulation—never really works. If you want peace of mind, best to pull it all and start fresh. Closed-cell foam’s expensive, but you won’t be worrying about mold every time it rains.
If you want peace of mind, best to pull it all and start fresh.
I get where you’re coming from, but I’ve actually managed to save insulation a couple times. Here’s what worked for me:
- Pulled out small sections to check for moisture and smell
- Ran dehumidifiers nonstop for days
- Used a moisture meter before putting everything back
Not saying it’s always possible, but sometimes you don’t have to gut the whole thing. Just gotta be super careful about hidden damp spots.
I’ve done the same—sometimes you really can save a lot if you catch it early. One thing I’d add: cut back drywall a few inches above the water line, not just at the base. Water wicks up more than you think. Also, fans pointed right at trouble spots help more than just running a dehumidifier in the room. It’s tedious, but worth it if you’re trying to avoid a full tear-out.
Cutting back the drywall above the water line is spot on—learned that the hard way after a tenant “just dried it out” and mold crept up behind the paint. I’d also say, don’t underestimate how much insulation can hold moisture. Even if the drywall feels dry, that stuff inside can be a hidden nightmare. I’ve had better luck pulling baseboards and drilling small holes to get airflow behind walls, especially in older basements with no vapor barrier. It’s a pain, but beats gutting the whole thing later.