I will say, sometimes I wonder if I go overboard with the prep. There’s probably a sweet spot between being super meticulous and just getting it done.
Totally get this. I’ve definitely spent more time taping and tarping than actually installing insulation before. My “quick” jobs always end up with me scrubbing paint specks off the dog or finding bits of fiberglass in my socks a week later. Ever tried the “bare minimum” prep route and actually had it work out, or does it always come back to haunt you?
I’ve tried cutting corners on prep a couple times, thinking I’d save myself an afternoon… but honestly, it usually bites me later. Last time, I skipped taping off the doorways and ended up vacuuming insulation dust out of the hallway carpet for days. My “bare minimum” is now at least covering floors and wearing a long-sleeve shirt. It’s a pain upfront, but cleaning up after is worse (and costs more if you ruin something). Maybe there’s a middle ground, but I haven’t found it yet.
Title: How Long Does It Really Take To Insulate A House?
- Skipping prep always sounds tempting, but I’ve learned the hard way too. Tried to “just get it done” in one of our upstairs bedrooms last winter and ended up with cellulose dust in the baseboard radiators. Took weeks to get rid of that smell.
- For me, the non-negotiables:
- Masking off every doorway with plastic (painter’s tape is cheap insurance)
- Dropcloths over hardwood—old floors suck up dust like a sponge
- N95 mask, long sleeves, and goggles (fiberglass in your sleeves = misery for days)
- Shop vac on standby
- I used to think prep was a waste of time, but honestly, it’s not just about cleanup. The dust gets everywhere in these old houses—cracks in the trim, behind outlets... you name it. If you skip steps, you’ll end up spending double the time cleaning or even repairing stuff.
- One thing I do to save a bit of time: I’ll only tape off rooms adjacent to where I’m working if there’s a real risk of airflow carrying dust. Sometimes the paranoia about “total containment” is overkill unless you’re doing spray foam or blown-in insulation.
- My best/worst shortcut story: Once tried to insulate an attic knee wall without gloves because I “couldn’t find them.” That was a mistake I still remember every time my hands get itchy near insulation.
- If you’re working solo, it’s almost always worth taking an extra hour at the start for prep. You’ll earn it back threefold by not having to scrub every surface afterward.
- Not sure there’s a true middle ground—maybe just learning which corners are safe-ish to cut and which are going to haunt you later. For me, taping and covering floors are on the “do it every time” list now.
Anyway... insulating an old house is never as quick as you think. Prep eats up half your day, but skipping it usually means you’re still dealing with the mess weeks later.
