Magnets and painter’s plastic—now that’s clever. I’ve only ever used the sticky vent covers, and yeah, the residue is a nightmare. I get the appeal of magnets since you can just peel them off when you’re done, no scraping required. The only hiccup I ran into with magnets was in my old house where some of the vents were aluminum, not steel, so the magnets just slid right off. Ended up taping the edges anyway, which sort of defeated the purpose.
If you’re prepping for window installs, I’ve found that covering vents is just one part of keeping dust from spreading everywhere. I usually go step-by-step: first, move furniture away from windows and cover it with old sheets (plastic gets slippery), then I tape up doorways with plastic drop cloths to keep dust from drifting into other rooms. For the vents, lately I’ve been using painter’s tape to secure a doubled-up layer of lightweight fabric (like an old pillowcase) over each register. That way air can still flow a bit if needed, but it catches most of the dust and there’s zero sticky mess after.
Curious if anyone else has tried something like that—using fabric instead of plastic or stick-on covers? Wondering if it makes much difference in how much debris sneaks through. Also, has anyone had issues with airflow or HVAC performance when covering vents during reno work? I’m always a little paranoid about blocking things too tightly and messing up the system...
“lately I’ve been using painter’s tape to secure a doubled-up layer of lightweight fabric (like an old pillowcase) over each register. That way air can still flow a bit if needed, but it catches most of the dust and there’s zero sticky mess after.”
- Love the pillowcase trick—beats scraping sticky gunk off vents any day.
- I’ve seen folks use furnace filters cut to size over registers, too. Bit more airflow, but they’re not as reusable.
- Blocking vents too tightly can stress the HVAC, especially if you’re running heat or AC during the work. I usually just shut the system off while the messiest stuff is happening—less risk, less dust sucked into the ductwork.
- Sheets over furniture are clutch. Plastic always ends up sliding off or making a crinkly mess.
- Only downside with fabric is fine drywall dust sometimes gets through, but it’s still way better than nothing.
I get the logic behind using fabric over the vents, but I’m not totally sold on it for fine dust. When I did my kitchen reno, I tried old t-shirts and pillowcases, but honestly, I still found a thin layer of dust in the ductwork after. Maybe I’m just paranoid, but after that, I started using painter’s plastic with a few small holes poked in for airflow. It stuck better than expected and seemed to catch more of the really fine stuff. Not perfect, but less cleanup for me afterward. Anyone else notice fabric lets more through than you’d think?
Yeah, I’ve noticed the same thing with fabric. Years back when we did our living room windows, I tried using old towels over the vents—figured it’d be good enough. Still ended up with that fine dust everywhere, especially in the ductwork. Switched to painter’s plastic too, taped tight and just a few holes for airflow. Not perfect, but way less mess in the end. I honestly think the really fine stuff just slips right through fabric, no matter how thick it is.
Painter’s plastic really does make a difference. I tried the fabric route too—old sheets, towels, even a couple of moving blankets—and still ended up vacuuming dust out of the vents for weeks. Taping plastic down was kind of a pain, but way less cleanup after. Only thing I’d add is to double check the seal around the edges...I missed a spot in the hallway and it was just enough for dust to sneak through. Might not be perfect but definitely better than nothing.
Yeah, painter’s plastic is a total game changer for dust. I’ll add, I use blue painter’s tape instead of regular masking—sticks better to baseboards and peels off clean. Sometimes I run a shop vac along the taped edge before pulling it up, just in case any sneaky dust made it through. Learned that after one too many gritty surprises under the couch.
Sometimes I run a shop vac along the taped edge before pulling it up, just in case any sneaky dust made it through.
That’s a clever move—I always seem to find a little line of dust right where I thought I’d sealed everything. Do you notice a difference in how much dust escapes depending on the brand of painter’s plastic? I tried a thinner roll once and it tore way too easily. I’m also curious if anyone’s tried reusable drop cloths for this kind of prep—wondering about the tradeoff between less plastic waste and maybe not sealing as tight.
I’ve actually had better luck with the thicker painter’s plastic too, but honestly, I still get some dust sneaking through no matter what. The reusable drop cloths are great for big debris, but I’ve found they don’t seal up tight enough for fine dust—especially with window work where there’s a lot of vibration and air movement. If you’re really concerned about dust, I’d say taping down the edges of plastic is worth the extra effort, even if it means using more single-use material than I’d like. It’s a tradeoff… less waste vs. a cleaner house.
Taping the edges definitely helps, but I’ve noticed dust still finds a way in—especially if you’re working in an older house with drafty walls. Ever tried those zipper door kits? Curious if they actually make a difference or just another gimmick.
Yeah, dust is relentless. I taped everything off too, but still ended up with a fine layer everywhere. I actually tried one of those zipper door kits during a bathroom reno—honestly, it helped a bit, but not a miracle fix. Still had some dust sneak through the zipper edges, especially if people kept going in and out. Maybe better than nothing, but definitely not perfect.