Yeah, old houses can be a real puzzle. I’ve seen folks go all-in on spray foam or blown-in cellulose, thinking more is always better, but sometimes you just end up trapping moisture where it shouldn’t be. Ever run into those weird hidden cavities behind plaster walls? Sometimes you open one up and it’s like a time capsule from the 40s—old newspapers, random junk, even the odd mouse nest. Curious if anyone’s tried those vapor-permeable insulations in older homes... did it actually help with that musty smell?
I hear you on the moisture thing. I tried mineral wool in a couple rooms—supposed to be vapor-permeable—and honestly, it seemed to help a bit with the mustiness, but not a total fix. Those hidden pockets behind lath are wild... never know what you’ll find.
Those old lath walls are full of surprises, aren’t they? I’ve run into everything from ancient newspapers to random voids that mess with airflow. Mineral wool’s a solid choice for breathability, but if you’re still getting musty smells, you might want to check for air leaks or spots where moisture’s sneaking in. Sometimes it’s less about the insulation and more about sealing up those weird gaps... especially in older homes.
Sometimes it’s less about the insulation and more about sealing up those weird gaps... especially in older homes.
- Couldn’t agree more—air sealing is half the battle in these places.
- I’ve seen jobs where we spent more time tracking down hidden gaps than actually installing the insulation.
- Curious, have you ever tried using a blower door test before insulating? It’s a game changer for finding those sneaky leaks.
Honestly, I get the hype around blower door tests, but for folks on a tight budget, it’s not always practical.
Sure, but renting the equipment or hiring someone adds up fast. I’ve just gone around with a stick of incense and a flashlight—definitely not as precise, but you’d be surprised how many drafts you can spot that way.“It’s a game changer for finding those sneaky leaks.”
Also, sometimes you can spend ages chasing every tiny gap and still not see a huge difference in comfort or bills. For me, focusing on the obvious trouble spots (attic hatches, basement rim joists, around windows) gave the best bang for my buck. Not saying the pro tools aren’t useful, just that there are cheaper ways to get most of the results if you’re willing to put in some elbow grease.
