Getting your space ready before new windows go in - my checklist

I’m with you on the dust - my living room looked like a construction zone for a week. But honestly, I skipped taping off the vents once and didn’t notice much difference. Maybe my old HVAC just isn’t that sensitive? One thing I’d add: if you’ve got pets, wrangle them somewhere safe. My cat tried to “help” and nearly escaped out the open window... not ideal.

I get what you mean about the vents - honestly, with older HVAC systems, the filtration isn’t always that efficient anyway. I’ve got a mid-90s furnace and even with all the taping and plastic sheeting, I still found dust in the weirdest corners for weeks. Agree 100% on the pets though. My dog thought it was a game and nearly knocked over a stack of glass panes... If you’re worried about particulates, swapping in a fresh MERV 11 filter after the work wraps up can help catch any lingering dust.

I’ve seen that happen a lot - no matter how careful you are, dust finds its way into every nook. Last job I did, the homeowner’s cat managed to wedge itself behind the drop cloth and came out looking like it’d rolled in flour. Swapping out your filter’s smart, but I also recommend running the fan for a few hours after install to help clear the air. Pets really do add an extra layer of chaos...

- Didn’t even think about the HVAC filter until after the fact - good call.
- I’m still finding dust in weird places months later, so I guess there’s no way to keep it totally clean.
- Pets are a whole other issue. My dog barked at the installers nonstop and tried to eat the caulk tube…
- Honestly, I’m skeptical moving furniture really helps as much as people say, but at least it keeps stuff from getting scratched.
- Wish I’d taped off more - next time, maybe plastic sheeting over doorways? Not sure if that’s overkill.

Plastic sheeting over doorways isn’t overkill at all, especially if you’re trying to keep dust out of the rest of the house. I learned that the hard way - thought just closing the doors would be enough, but nope, fine dust still got everywhere. As for the HVAC filter, swapping it after the install is a must. It’s wild how much junk those things catch during construction, and a clogged filter can really mess with your system’s efficiency. I’m with you on moving furniture... helps with scratches, but as far as keeping things clean, it’s only half the battle. My cat hid inside a covered armchair the whole time and came out looking like a chimney sweep.

Plastic sheeting is definitely worth the extra step, especially if you’re dealing with older plaster or drywall. I’ve seen fine dust make its way through even tiny gaps around door frames, so taping the edges of the plastic is key. I’d also add - if you’ve got forced air, it helps to turn off the HVAC system during the messiest parts of installation. Otherwise, you’re just circulating dust everywhere, and like you said, that filter will fill up fast.

Moving furniture is good for access and preventing dings, but I always recommend covering anything left in the room with drop cloths. Dust settles in places you wouldn’t expect, especially on textured fabrics. Had a client once who thought their bookshelves were safe since they were across the room - nope, every book ended up with a layer of grit.

One thing folks forget: check window sensors or alarms if you have them. Sometimes installers disconnect them and don’t reconnect, which can be a pain later. It’s those little details that save headaches after the fact.

Interesting take on the HVAC - I've always wondered if it's better to just seal off the vents in the work area versus shutting down the whole system, especially during colder months. I’ve tried both and honestly, sometimes the house gets uncomfortably chilly if you turn everything off for hours. Maybe it depends on how messy the job is or how sensitive you are to dust? Also, curious if anyone’s had issues with plastic sheeting leaving residue on painted trim after taping - had a bit of trouble with that last time and it was a pain to clean up.

Yeah, sealing the vents in just the work area has worked better for me, especially when it’s cold out. Shutting the whole HVAC down made the rest of the house way too chilly, and honestly, it didn’t seem to help that much with the dust anyway. I just taped up the vents with painter’s plastic and called it good - maybe not perfect, but less hassle.

About the plastic sheeting, I’ve had that same issue with residue on the trim. The blue painter’s tape is supposed to be safe for painted surfaces, but sometimes it still leaves a sticky mess, especially if it’s left on for more than a day or two. I started using that green FrogTape stuff and it seems to come off cleaner, though it’s a bit pricier. Rubbing alcohol helped get the gunk off last time, but it was still annoying.

I guess it all comes down to how much dust you can tolerate and how much cleanup you want to deal with after. For me, I’d rather have a little extra dust than freeze out my family for half a day.

- Totally agree on just sealing the vents in the work zone. Tried shutting down the whole HVAC once - big mistake, like you said:

Shutting the whole HVAC down made the rest of the house way too chilly, and honestly, it didn’t seem to help that much with the dust anyway.

That’s a solid checklist, honestly. Sealing just the vents in the work zone is the way to go - tried the whole “shut down the HVAC” thing once and it just made the bedrooms freezing. Didn’t really notice less dust, either. Like you said:

Shutting the whole HVAC down made the rest of the house way too chilly, and honestly, it didn’t seem to help that much with the dust anyway.

I’m a big fan of the box fan + furnace filter trick too. It’s not perfect, but it definitely grabs a lot of the floating stuff before it settles everywhere. I’ve even run two at opposite ends of the room when things got extra messy - probably overkill, but it felt like it helped.

The tape tip’s a good reminder. I’ve had old paint peel off with the wrong tape, and then you’re stuck with a touch-up project you didn’t want. And labeling vent covers? Yeah, learned that one after trying to fit three nearly identical covers back in the wrong spots. Took me way longer than I’d like to admit.

All in all, your prep list covers the important stuff. Makes a big difference for comfort and cleanup.

I’ve had old paint peel off with the wrong tape, and then you’re stuck with a touch-up project you didn’t want.

That right there is why I’m picky about tape. Blue painter’s tape or nothing - learned the hard way after a “quick job” turned into a weekend of scraping and repainting trim. About the dust, I’m with you: shutting down HVAC just isn’t worth it unless you like living in an icebox. I’d argue the extra box fan is never overkill when drywall dust gets involved... that stuff finds a way into every corner no matter what.

I’d argue the extra box fan is never overkill when drywall dust gets involved... that stuff finds a way into every corner no matter what.

I get the box fan thing, but has anyone actually had luck containing all the dust with just fans and plastic? I’ve tried double layers of plastic sheeting, blue tape (yeah, I learned my lesson with the cheap stuff too), and two fans blowing out the window. Still ended up vacuuming dust out of my kitchen drawers two weeks later. Maybe I’m just cursed with old plaster walls that shed like crazy.

On the HVAC - curious if anyone’s actually run into problems shutting it down for a day or two. I’ve done it in the fall, so not too cold, and it seemed to help a bit with keeping dust from circulating, but maybe that’s just wishful thinking. Is it really that much worse to tough it out for a day, or am I overthinking it?

I guess there’s no perfect solution unless you want to live in a bubble for a week.

Still ended up vacuuming dust out of my kitchen drawers two weeks later.

That’s been my life every time I do demo in this house. I swear, no matter how much plastic or tape I use, the dust just migrates - like it’s got a mind of its own. I’ve even tried wetting the floor before starting, but it didn’t seem to help much. About the HVAC, I’ve shut mine off during projects in spring and fall, and it was fine temperature-wise, but I always worry about the system picking up stray dust anyway. Has anyone tried taping over vents instead? Wonder if that’s more effective than just powering down.

Dust is relentless, no matter what you do. I’ve taped over the vents with painter’s tape and plastic before, and it definitely cut down on how much dust ended up in my HVAC system compared to just shutting it off. Still got some fine stuff sneaking in around the edges, though - almost impossible to get a perfect seal, especially if your vent covers aren’t flush. I’ve started stuffing old towels in the vent openings, then taping over that, which seems to help a bit more. You’ll still be finding dust for weeks, but at least it’s not blowing into every room.

That’s a solid approach - towels plus tape definitely catch more than just plastic. I’ve tried foam weatherstripping around the vent edges for a tighter seal, but it’s still not perfect. Honestly, even weeks later I’m still vacuuming up the last bits. You’re not alone there.

Yeah, sealing everything up is way harder than it seems. I tried the plastic plus towels trick too, but still found dust in places I didn’t even know existed. Honestly, I think some mess is just unavoidable with window installs. You’re definitely not the only one still finding debris weeks later. It’s frustrating, but at least it’s a one-time headache.

Man, you’re spot on - no matter how careful you are, that fine dust just finds a way. I’ve done installs where we taped off everything, used drop cloths, even ran an air scrubber, and still ended up vacuuming out window frames and baseboards for days after. The worst is older homes with plaster walls; that stuff crumbles if you so much as look at it funny.

One trick I picked up is to actually use painter’s tape to seal the edges of the plastic to the wall or trim, not just drape it. It helps a bit, but honestly, some debris always sneaks through. I’ve stopped promising “dust-free” installs because it’s just not realistic.

On the bright side, once you’ve done the big clean-up, you usually don’t have to worry about it again. Unless you’re like me and notice a stray bit of caulk in the carpet months later…

I’ve stopped promising “dust-free” installs because it’s just not realistic.

- Totally agree, dust always wins in the end.
- I’ve found vacuuming with a HEPA filter right after each workday helps keep things manageable.
- For older plaster, I gently mist the area with water before cutting - seems to keep some of the dust down, though not perfect.
- Rugs rolled up and stored away make post-job cleaning easier (learned that the hard way).
- I still find random bits months later too… part of the charm, right?

I gently mist the area with water before cutting - seems to keep some of the dust down, though not perfect.

That misting trick is underrated, especially with old lath and plaster. I’ve also taped off vents and doorways with plastic sheeting, but somehow, fine dust still migrates. HEPA vacs help but don’t expect miracles. It’s like fighting entropy…