![]() At least if you start from scratch, you can shim out where you need to address any settling in the floor joists. Not to mention that any imperfections in the L&P cieling might not be apparent now, but when you drywall over it, you will get the imperfections in your boarding. In my opinion, drywalling over it is a terrible and lazy way to do the job it just complicates everything down the line in case you have to repair or install anything later on. As soon as I see L&P my desire is to bash it all to hell I can't stand the stuff. Now hang your ceiling drywall then the walls from the top down.Hmm, it's a tough call. Install the ceiling poly allowing it to come down the walls 6" or so then apply the wall poly starting a couple of inches down the wall and make your seal there. Extend your lighting boxes if you are keeping them as well. ![]() In 90% of those walls the insulation around the boxes is dusty and dirty from air flow coming through those areas and the insulation acting like a filter.Īs for the ceiling I would strap right over the plaster with the 1x4s ,use shims to flatten it out a little. In homes from the late 70s to early 90s that I reno I see light weight poly used and electrical boxes just cut around. If you are going to the trouble of removing the lath and plaster I would at least remove the electrical boxes and wrap with poly and seal as best as you can. Just cutting around plugs and not making some sort of seal is making your vapour barrier pretty much a waste of time and money. In a cold climate it is a very important component in the efficiency of your home. If you are getting a permit where I am living, they inspect before the drywall is installed so that they can see the insulation and vapour barrier. The better way to do the vapor barriers is over lap the walls over the ceilings and seal. Tough to do much with your plugs and switches if you do not remove plaster and lath ,so seal the poly to the old plaster around all of those electrical areas to do your best, and install foam gaskets behind the cover plates to try to seal them off. Pot lights are nice but if putting them in an insulated ceiling most still require a vapour barrier around them to complete your air barrier.If the lights are rated for insulated spaces you have no issues. You can buy 1/2" "ceiling" drywall which is made to resist sagging. I see what you are saying about just leaving the lath on the ceiling, generally it is way easier to demo it all with the plaster but also much messier ,give it a try though. ![]() If things are fairly flat you could apply right to it with longer screws and some adhesive. What I do is strap the cielings with 1x4 s then apply poly if the attic or cold area is above that cieling.The reason for the 1x4s is that palster walls and ceilings are generally not very flat so I can do a little shimming under the 1x4s to try and get a few kinks out. Sounds like you have a huge job ahead of you! I personally like to remove the lath and plaster and start fresh but some times the customer wants it covered. Thank you community and Shannon! Love the videos, just not sure what to do here with an older place instead of fresh home building. What do I do about receptacle boxes? If I have vapor barriers on my ceilings, Do I wrap them in front or behind the exterior wall vapor barrier? ![]() I still don't trust insulation against an IC rated recessed light, should I? With exterior walls, I plan on installing a vapor barrier, then the drywall. (*Another side note thought was to scrape off any peeling paint from the ceiling's plaster and install drywall over that too to keep dirt to a minimum.any thoughts on this)ĭo I need to install a vapor barrier over the lath before hanging up drywall? Also, what thickness of drywall is good for ceiling so there is no sagging? Are recessed lights a better option for lighting now, or would I be risking problems with losing insulation value. (maybe use longer screws?) I would also like to leave the lath up on my ceilings so that the insulation does not make a mess and fall in. In one room there is tiles for the ceiling, unaware of their substance and what is under them I want to just drywall over them if possible. ![]() There is old lath and plaster up on the ceilings and walls of the house, and paneling over walls in some rooms. I will be starting a remodel project in the spring - please bear with my random assortment of questions! I can explain more if desired. ![]()
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