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Old 06-25-2019, 06:47 PM   #1
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Drywall Question


Hi just wanted some advise, I'm continuing my basement where someone left off, as you can see in the photos (hopefully they attached) the Pink Foamboard is attached in front of the studs to the studs. My question is, id like to continue with this process but I wanna make sure drywall can be attached to the foam over top of it. I've read there are adhesives to do it along with screwing it in through the foam then stud.

Any help would be great!

Thanks
Rob

Drywall Question-img_20190625_182300.jpegDrywall Question-img_20190625_182235_hdr.jpegDrywall Question-img_20190625_182140.jpeg

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Old 06-25-2019, 07:25 PM   #2
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Re: Drywall Question


You'll have to use screws long enough to penetrate sheetrock/foam and go into the studs at least half way. 2" based on 1/2 sheetrock, 1/2 foam. Regardless, the foam needs to either be removed or covered with sheetrock or other wall covering.
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Old 06-25-2019, 07:33 PM   #3
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Re: Drywall Question


Thanks Chandler, so placing Drywall right on top of the foam is an option then? With the proper things Thanks again

Rob

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Old 06-25-2019, 07:35 PM   #4
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Re: Drywall Question


Can not tell how thick the foam is, but after clearing the drywall and the foam, should have about 1" min of screw into the stud.
The most common drywall screw is 1 5/8", but they come in longer lengths for such applications as yours.
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Old 06-25-2019, 07:43 PM   #5
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Re: Drywall Question


Foam states 1/2", so if it is a single layer, 2" screws should work. The one thing you will encounter problems with is the receptacle and switch settings. They are 1/2" too shallow now and you will either need to use extension boxes or rings to bring them to the new depth with the sheetrock. You cannot leave a gap like that.

I just noticed you have metal studs. You will need to use self drilling sheetrock screws to engage the metal. The other advice was based on wood studs.
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Old 06-25-2019, 07:46 PM   #6
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Re: Drywall Question


Sheetrock screws come in a fine thread for steel studs, I would use 2"
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Old 06-25-2019, 07:56 PM   #7
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Re: Drywall Question


Thanks everyone, yes it is half inch foam, the receptacles I have seem to be sticking out half inch or a bit more past the foam so I may be ok to do without the ext boxes but I will add if need be. I wasn't sure if this practice was common in the trade or not wise.

Thanks again everyone

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Old 06-25-2019, 08:06 PM   #8
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Re: Drywall Question


The insulation needs a vapor barrier. The foam is overkill. You're good.
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Old 06-25-2019, 09:44 PM   #9
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Re: Drywall Question


Thanks Chandler great advice

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Old 07-10-2019, 02:04 PM   #10
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Re: Drywall Question


Romex in metal studs? Thought that had to be BX cable or is that only in commercial?
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Old 07-10-2019, 05:50 PM   #11
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Re: Drywall Question


Romex is fine as long as it is protected as it passes through the metal as shown. Yes, AC is required on most commercials, except in Chicago and other places that require conduit.
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