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Framing Basement With Ceiling Drywall In Place

 
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Old 08-10-2020, 10:06 PM   #1
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Framing Basement With Ceiling Drywall In Place


My local area is starting to require basement ceilings and stairwells be dry walled in new construction- even when the basement is unfinished. This makes finishing an unfinished basement more of a hassle.

In these cases I can’t decide what is best to frame in the walls that run parallel to joists. Do I tear out all the drywall in the basement? Do I use a rotozip or something similar to cut drywall back to the next joist to get blocking in place? Is there a better option?

Thanks
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Old 08-10-2020, 10:17 PM   #2
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Re: Framing Basement With Ceiling Drywall In Place


add blocking, double joists, etc prior to drywall.

some well placed conduit, may not be code required, can make running electrical easier.

i have seen fire rated assemblies that required drywall against framing then other framing was just set on top of the drywall and anchored to blocking, doublers etc...

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Old 08-10-2020, 10:28 PM   #3
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Re: Framing Basement With Ceiling Drywall In Place


The drywall is in place already- no blocking. Yes I wish home builders would do this but they don’t.
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Old 08-10-2020, 10:30 PM   #4
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Re: Framing Basement With Ceiling Drywall In Place


then start your selective demo to get blocking etc in place.

one thing to keep an eye on, an consider, is to re-rock the ceiling rathet than a bunch of patches.

talk it over with your drywall guy & see how it works out.
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Old 08-10-2020, 11:57 PM   #5
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Re: Framing Basement With Ceiling Drywall In Place


Quote:
Originally Posted by Basementguy1 View Post
My local area is starting to require basement ceilings and stairwells be dry walled in new construction- even when the basement is unfinished. This makes finishing an unfinished basement more of a hassle.

In these cases I can’t decide what is best to frame in the walls that run parallel to joists. Do I tear out all the drywall in the basement? Do I use a rotozip or something similar to cut drywall back to the next joist to get blocking in place? Is there a better option?

Thanks

Where are you that they require that. Sounds like a dumb practice. “Welcome to your new home, this is your unfinished basement that you can’t access any of the plumbing/ electrical to make any changes”

Probably cheaper to rip it all down and replace than have everyone try and work with it and then patch the crap out of it.
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Old 08-11-2020, 04:11 AM   #6
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Re: Framing Basement With Ceiling Drywall In Place


Really don't need a ton of blocking there. With a doubled top plate, you can easily go every 8' with the blocking. Tie shorter walls to adjacent walls and your good to go.
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Old 08-11-2020, 05:05 AM   #7
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Re: Framing Basement With Ceiling Drywall In Place


I just designed a few basement layouts for a few homeowners, and I met with their contractor who will be doing the work, it was the same situation, the entire development had their basement ceilings drywalled.
We will be doing the same thing as Griz suggested cut the drywall and put in blocking... he was also considering applying glue to the top plate and using Hilti 1/4" Snaptoggle anchors.
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Old 08-11-2020, 09:58 AM   #8
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Re: Framing Basement With Ceiling Drywall In Place


Expect to see this more. IMO, the driver is protection of firefighters with engineered floor systems, which tend to fail earlier and unpredictably in a fire.

Last edited by hdavis; 08-11-2020 at 10:18 AM.
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Old 08-11-2020, 02:37 PM   #9
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Re: Framing Basement With Ceiling Drywall In Place


The situation has come up for me before and I have used toggle bolts and glue like Greg mentioned. Haven't heard back that there were any issues. That being said these were cheap jobs where it didn't make sense to do it properly...
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Old 08-11-2020, 02:55 PM   #10
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Re: Framing Basement With Ceiling Drywall In Place


Begrudgingly, I think I would mark it, cut the minimum amount of necessary openings (beyond joist to joist), add the blocking, knife the crap off the patch edges (for the finisher, esp. if it's you) put the rock back, and just keep moving.

Or how about cutting a 3.5 x 3.5 opening on the line of the wall, slathering some liquid nail on a patch plywood block, and tucking it up there to glue to the back of the rock?

Last edited by MarkJames; 08-11-2020 at 02:57 PM.
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Old 08-11-2020, 03:36 PM   #11
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Re: Framing Basement With Ceiling Drywall In Place


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The situation has come up for me before and I have used toggle bolts and glue like Greg mentioned. Haven't heard back that there were any issues. That being said these were cheap jobs where it didn't make sense to do it properly...
Cheap or not...It's not a load-bearing wall so it's not going anywhere even if someone slams into it.
Did a view jobs turning a loft into an office and most of them had a partition running parallel to the ceiling joists, architects specs and detail was glue and cross nailing 16"OC as an alternative if there is no solid blocking on top. After sheetrock, you will never tell that it's not nailed to blocking.
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Old 08-11-2020, 03:51 PM   #12
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Re: Framing Basement With Ceiling Drywall In Place


This is a requirement of the 2015 IRC. So depends if your jurisdiction has adopted this section or not and subsequently how they enforce it. For instance, a county gov around here adopted the code in full and started enforcing the lid with fire tape and foam for draftstopping. After enough complaining by homeowners and contractors they changed the rules to screwed off but not taped or sealed... smarter folks than me...
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Old 08-11-2020, 06:34 PM   #13
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Re: Framing Basement With Ceiling Drywall In Place


It’s all fire related. Take down block rerock
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Old 08-12-2020, 06:16 AM   #14
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Re: Framing Basement With Ceiling Drywall In Place


Why would you tear out all the drywall to add blocking to a 14” strip? I’d move the wall out to just below that first or last floor joist and sell it to the customer as a highly insulated wall long before I’d touch the drywall.

If the first and last 2.5” wide I joists are 16” oc and you have an 8” concrete wall, you need to move your 2x4 non load bearing end walls in by about 5” extra. One side could be less depending on the floor framing layout.


But I’d glue and Ramset or tapcon blocks to the concrete before I’d even do all that.
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Old 08-12-2020, 06:24 AM   #15
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Re: Framing Basement With Ceiling Drywall In Place


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It’s all fire related. Take down block rerock
Now you made the job much more difficult, now you need to fireblock the joist bays

Leave the drywall up and cut holes or do like Greg suggested
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Old 08-12-2020, 06:46 AM   #16
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Re: Framing Basement With Ceiling Drywall In Place


My s/r sub would have it down blocked & back up cleaned up half day tops. If any mechanicals need addressed call him back when ready. Hell w/all the patches. Time you do that your behind
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Old 08-12-2020, 07:11 AM   #17
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Re: Framing Basement With Ceiling Drywall In Place


I would use metal stud and pigeon toe the top plate into the drywall, extremely strong if done right.

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