How Long Does It Really Take To Insulate A House?

Honestly, I get where you’re coming from, but I’ve learned the hard way that “good enough” can come back to bite you. Tried the blown-in route in our old place - helped a ton with drafts, but man, I still wish I’d just ripped out a couple more walls and done it right. The energy bills were better, but not great. Still, I get not wanting to live in drywall dust for weeks... sometimes sanity wins over perfection.

Tried the blown-in route in our old place - helped a ton with drafts, but man, I still wish I’d just ripped out a couple more walls and done it right. The energy bills were better, but not great.

Totally get what you mean about drywall dust vs. perfection. I’ve been in that same spot - sometimes you just want it done and livable again.

- Blown-in’s a lifesaver for speed, but yeah, it’s never quite as airtight as full batt or spray foam behind new walls.
- Energy bills do drop, but not to “wow” levels if you skip the tough spots.
- Honestly, sometimes the cost of sanity outweighs the cost of a few extra bucks on utilities.

Curious - did you notice any difference in noise reduction after the blown-in? That’s one thing I always wonder about when picking insulation methods...

Noise difference is a weird one - I honestly expected more. After we did blown-in cellulose in our attic and some exterior walls, it *did* muffle street noise a bit, but you could still hear neighbors mowing or kids playing. It’s not like a full wall gut with batt or foam where everything gets sealed up tight. If you’re hoping for total peace and quiet, it might be a letdown, but it definitely takes the edge off.

Yeah, I get where you’re coming from. I had the same hope - like, “finally, some actual quiet in here” - when we did blown-in cellulose last year. It’s kind of wild how much noise can still sneak in, even after all that work. That said, I do think there’s something to be said for the way it softens the harshness. Before, every car door slam or barking dog felt like it was happening in my living room. Now, it’s more like distant background noise I can tune out.

Honestly, unless you’re doing a full gut job with spray foam and sealing every possible gap, total silence is probably out of reach for most older houses. But I’d still call it a win - especially when you factor in the energy savings and that cozy feeling you get when the drafts are gone. Sometimes progress is a bit more subtle than we want, but it still counts.

I get the appeal of spray foam for sound and air sealing, but honestly, I’m not convinced it’s the only way to get real results. I’ve seen some folks combine dense-pack cellulose with serious caulking and weatherstripping - made a bigger difference than I expected. Plus, cellulose is way better for the planet and doesn’t off-gas. It might take more effort piecing it all together, but sometimes a layered approach gets you most of the way there without going full gut-reno. Just my two cents…