How Long Does It Really Take To Insulate A House?
I get what you’re saying about not sweating every last corner. When I did my first place, I was obsessed with getting every gap filled—spent way too much time crawling around with cans of spray foam and a headlamp, trying to hit spots nobody would ever see. Looking back, I probably could’ve saved myself a weekend and a half if I’d just focused on the main areas.
Here’s how it played out for me: attic took the longest, mostly because of all the weird angles and old wiring up there. I tried using one of those inspection cameras too, but honestly, it just made things more complicated. Ended up trusting my hands and a flashlight like you said. The walls were way faster since we went with blown-in cellulose—just drilled holes, filled ’em up, patched over. Crawlspace was a pain but at least it’s straightforward.
If I had to do it again, I’d say don’t kill yourself over those impossible-to-reach spots unless you’re planning to live there long-term or your climate is super extreme. Most buyers aren’t going to notice if you missed behind a pipe or two, and inspectors seem more interested in the R-value on paper than what’s actually in the tightest corners.
One thing I will say—don’t skip sealing around windows and doors. That’s where I noticed the biggest difference in drafts and bills. The rest is kind of diminishing returns, at least from what I’ve seen.
All in all, insulating my 1,200 sq ft house took about four full days with two people (not counting breaks for pizza or arguing about which room was next). If you’re not going for perfection and just want solid results, it’s totally doable without losing your mind over every nook and cranny.
Man, reading this makes me feel a lot better about my own pace. I’ve been stressing over every little gap too, but hearing you say the attic was the worst gives me hope—ours is a maze of old ductwork and insulation dust. I’m definitely taking your advice on the windows and doors. If I can get through this without a meltdown (or too many pizza-fueled arguments), I’ll call it a win. Thanks for sharing how it really went for you.
Honestly, stressing over every gap is pretty normal—especially in older homes where nothing is square and the attic feels like a booby-trapped crawlspace. I’ve seen people get hung up on the attic for weeks, mostly because of weird angles and all that ancient insulation dust you mentioned. Did you end up pulling out the old stuff or just layering over it? Sometimes it’s not worth the hassle unless it’s moldy or wet.
Windows and doors are definitely where you’ll see the biggest difference in comfort, but have you checked the rim joists in the basement? People always forget those, and it’s a sneaky spot for drafts. Also, don’t beat yourself up if you need to take a break—sometimes stepping away for a day or two helps you spot things you missed. Pizza-fueled arguments are basically a rite of passage for any DIY project, right? Just try not to overthink every little imperfection. The goal is better, not perfect.
Rim joists are such a pain—totally agree, they’re easy to overlook but make a huge difference. I actually ended up pulling out the old attic insulation because it was pretty gross and patchy, but man, what a mess. Did you do anything about the basement sill plate? Sometimes I wonder if all that air sealing is worth the crawling around...
Honestly, I think the air sealing is worth it, even if it feels like a hassle crawling around down there. Here’s what I’ve found:
- Rim joists and sill plates are the biggest culprits for drafts. Skipping them can make all your other insulation work less effective.
- I used rigid foam and spray foam for the sill plate—messy, but not as bad as ripping out attic insulation.
- The payoff isn’t just comfort, but you’ll probably notice lower heating bills too.
It’s a pain, yeah, but in my experience, leaving those gaps means you’re just wasting energy. Maybe not the most fun part of the job, but I wouldn’t skip it.