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-   -   drywall over P&L ? (http://www.diychatroom.com/f101/drywall-over-p-l-143608/)

Fix'n it 05-13-2012 10:28 AM

drywall over P&L ?
 
i have an old house. it has P&L pretty much everywhere. i am going to take down the P&L on the walls, to add insulation. but i do not need to do this for the ceiling. i understand that putting drywall right over the P&L is ok. is this correct ? if so, should i use anything before i put the drywall up ?
any other issues ?

thanx

btw, i have 9" ceilings.

oldrivers 05-13-2012 05:30 PM

yes you can do that , but take an awl and hammer and try finding the joists . most likely 16 on center but not always the case . run the sheets perpendicular to the joists as usual but try to hit the joists with the fasteners and not just the lath thats about it .

oldrivers 05-13-2012 05:32 PM

you can also drill holes in the walls and use blow in insulation if you wish.

Fix'n it 05-14-2012 09:38 PM

thanx. yeah i plan to nail to the rafters. but i am wondering if i should use some kind of vapor barrier.

i am not going to blow in the walls. that is coming down. i actually started 1 room today. 1 reason for the p&l to come down is updated electrical and new framing for the new, different sized windows i am getting.

joecaption 05-14-2012 09:44 PM

It would be far better to also remove the plaster on the ceiling.
If for some strange reason you deside to leave it do not even think about using nails, use 3' sheetrock screws instead.

Fix'n it 05-14-2012 10:13 PM

removing it is not going to happen. i would rather leave it as is, than remove it.

screws, yeah. idk why i said nail.

M3 Pete 05-14-2012 10:36 PM

Do they recommend a vapor barrier where you live? I have heard of using spray foam as a vapor barrier in an attic where none exists (probably like your P&L), but I'm not sure how that would play out with an added drywall layer.

And given what a PITA it would be to clear out all your insulation to spray foam, plus you likely need insulation on top of the foam, you might as well remove the P&L ceiling. How much more mess could it be when you are knocking down the walls?

Fix'n it 05-14-2012 10:58 PM

Quote:

Originally Posted by M3 Pete (Post 921556)
Do they recommend a vapor barrier where you live?

How much more mess could it be when you are knocking down the walls?

idk. i am trying to find out. but like you said = how would that react with P&L throw in the equation .


a TON !!! we are living here. and with a job(for now) i can do only so much at a time. i can't shut down half the house for weeks to do that. i just did a small area of a wall in an unused room, and the wife was complaining, i left it a bit messy. she didn't like that. i had to nicely tell her to stfu or do it herself.

thanx for the reply :)

M3 Pete 05-14-2012 11:08 PM

Quote:

Originally Posted by Fix'n it (Post 921568)
i had to nicely tell her to stfu or do it herself.

I'm sure that went over well. :laughing:

johnzenobia 05-15-2012 07:08 AM

You can go over the old p&l I would not take it own if you don't have to. Couple questions.
How is the electrical run. If any in the ceiling. Don't use too long of a screw or you may hit a water pipe or wire.
What is directly above that room? If old bath room with cast iron tub you may want to tear ceiling out and beef up joists from the weight.
Other than that I wouldn't take out the ceiling because it can open up Pandora's box. That old rough cut lumber is exactly what the name says rough cut and not plum. The old plaster can be 1/4" thick in some areas and 3/4" in others because of the framing. Good luck

Jay 78 05-15-2012 03:51 PM

Quote:

Originally Posted by Fix'n it (Post 920364)
i have 9" ceilings.

:huh:

Quote:

Originally Posted by joecaption (Post 921521)
use 3' sheetrock screws

:confused1:

Fix'n it 05-15-2012 09:51 PM

Quote:

Originally Posted by M3 Pete (Post 921577)
I'm sure that went over well. :laughing:

she knows not to argue with me. but saying that,i am not a dictator.
when i was a teen, i decided to help my dad paint the house. i was doing it right, and kinda quick. he told me i was doing it all wrong(i was doing it the way he was. i was watching him). i set the paint brush down and walked away. i never helped again.

Quote:

Originally Posted by johnzenobia (Post 921689)
You can go over the old p&l I would not take it own if you don't have to. Couple questions.
How is the electrical run. If any in the ceiling. Don't use too long of a screw or you may hit a water pipe or wire.
What is directly above that room? If old bath room with cast iron tub you may want to tear ceiling out and beef up joists from the weight.
Other than that I wouldn't take out the ceiling because it can open up Pandora's box. That old rough cut lumber is exactly what the name says rough cut and not plum. The old plaster can be 1/4" thick in some areas and 3/4" in others because of the framing. Good luck

all of the K&T is being replaced. so no issue there. there is an empty attic up there.
Quote:

Originally Posted by Jay 78 (Post 922005)
:huh:



:confused1:


:laughing: some typos there, A

Fix'n it 05-15-2012 09:57 PM

1 Attachment(s)
here is where i am at in the "learning" room. this is about 2hrs work. this is going to be our temp bedroom, while i do thee bedroom. otherwise its just a storage room. a new window is going in, once i decide what to get.

Fix'n it 05-15-2012 09:59 PM

oh. the P&L on the interior walls. i am just going to drywall over em. call me lazy, but screw that tearing out all that chit.
and there was no insulation in that wall.

user1007 05-16-2012 10:04 AM

Just remember you will have to get extenders for your electrical boxes and existing wiring will need to be long enough to reach into them. You cannot splice length on and meet code.

You did say you are pulling new wiring though?


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