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post #1 of 24 Old 09-10-2013, 04:46 PM - Thread Starter
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For those of you that have used the OSB + Drywall combo in your rooms - were you stuck using 5/8" tongue and groove? I've contacted 5 local supply companies and in 5/8" thickness they only carry the T+G stuff.

Was it a pain to work with? No problem?

Curious to know smile.gif


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post #2 of 24 Old 09-10-2013, 05:11 PM
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Here all I can get in 3/4 is T&G. 19/32 is square edge.


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post #3 of 24 Old 09-10-2013, 05:14 PM - Thread Starter
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Quote:
Originally Posted by BIGmouthinDC View Post

Here all I can get in 3/4 is T&G. 19/32 is square edge.

Odd how different parts of the country (and more so the US vs Canada) vary in terms of products and overall selection.

In general, I suppose T&G is frowned upon? I assume it makes installation more difficult. I've also heard about sheets not being completely square? Sounds like a nightmare eek.gif


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post #4 of 24 Old 09-10-2013, 05:33 PM
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Here in Indy, you can only get 3/4" in T&G. 1/4 and 5/8 is square edge.


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post #5 of 24 Old 09-10-2013, 05:49 PM
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Are you sure 5/8" is available in tongue and groove? I've never seen it nor heard of it.............

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post #6 of 24 Old 09-10-2013, 05:51 PM - Thread Starter
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Yup, certain.

Here's an example:

http://www.homedepot.ca/product/5-8-4x8-oriented-strand-board-tongue-and-groove-19-32/935757


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post #7 of 24 Old 09-10-2013, 07:20 PM
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Quote:
Originally Posted by memmo View Post

Yup, certain.

Here's an example:

http://www.homedepot.ca/product/5-8-4x8-oriented-strand-board-tongue-and-groove-19-32/935757

Thanks.................I've never seen it.........makes sense the product's from Canada! wink.gif

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post #8 of 24 Old 09-10-2013, 08:11 PM
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why is the picture square edge? have you actually gone to look at their stock?


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post #9 of 24 Old 09-11-2013, 07:18 AM - Thread Starter
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Quote:
Originally Posted by BIGmouthinDC View Post

why is the picture square edge? have you actually gone to look at their stock?

Yup, it's definitely T&G. Thinner sheets are available with square edge, but the minute you want 5/8" it switches to T&G.

Is there any reason not to use T&G? If I put the sheets on vertically, the groove shouldn't cause too much of a headache?


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post #10 of 24 Old 09-11-2013, 04:23 PM
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Originally Posted by memmo View Post

Yup, it's definitely T&G. Thinner sheets are available with square edge, but the minute you want 5/8" it switches to T&G.

Is there any reason not to use T&G? If I put the sheets on vertically, the groove shouldn't cause too much of a headache?

Other than fact OSB T & G is a pain.....................edges are not tight.......................no.

AdvanTech is the only engineered OSB I'd recommend..............seams are tight and stable.

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post #11 of 24 Old 09-11-2013, 04:53 PM - Thread Starter
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Good to know. Maybe i should beef up framing in column areas etc and stick to double drywall. Was totally hoping for OSB though as the benefits seem terrific.


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post #12 of 24 Old 09-11-2013, 06:07 PM
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Every column I've built practically stands by itself in position, No additional bracing or first layer of OSB required. You can glue and screw two vertical 2x2s to the drywall and slip a column over and fasten with a few screws.


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post #13 of 24 Old 09-11-2013, 08:03 PM
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Originally Posted by memmo View Post

Good to know. Maybe i should beef up framing in column areas etc and stick to double drywall. Was totally hoping for OSB though as the benefits seem terrific.

Benefit is to have something solid to screw into.............

With layer of OSB, I was able to fir 2 X 4's for molding 1X2's for fabric channels etc.....................that's the real advantage over double drywall. Of course, DD is more cost effective.

For my columns...........I blocked my columns and screwed into channels...........worked like a charm but recommend using lots of neoprene stripping.............ie. no rattles or vibrations.

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post #14 of 24 Old 09-12-2013, 04:22 AM - Thread Starter
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Yah, I was planning on OSB from the start..

I framed 24" o/c and also have a bit of a weird situation where I was hoping the stiff OSB would help me out.

I have my double wall built underneath a steal i-beam. The way its framed, the drywall/osb would not be secured at the very top of the wall since there is nothing to secure it to.

Here's a drawing:



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post #15 of 24 Old 09-12-2013, 05:20 AM
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Originally Posted by joetarin View Post

Here in Indy, you can only get 3/4" in T&G. 1/4 and 5/8 is square edge.

I was able to get 3/4" OSB (actually 23/32") in Indy without the T&G.

You should be fine with that span Memmo with OSB as your first layer. Are you putting a soffit along that wall?


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post #16 of 24 Old 09-12-2013, 05:24 AM - Thread Starter
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Nope, no soffit, but am planning on a piece of crown moulding about 6-8 down from the ceiling so that I can run some rope lighting.

Do you think 5/8" drywall could span the same distance?

I suppose the question is, do I go with 5/8" OSB (even if it has to be T&G) or simply go with two layers of 5/8 drywall. Given that span and the 24" o/c stud spacing, I'm not sure confused.gif


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post #17 of 24 Old 09-12-2013, 06:17 AM
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In my case I wanted 3/4" OSB as it has similar mass to 5/8" drywall. That way I wasn't giving up mass to have the convenience of attaching anything to the walls at any location. In your case if your only concern is some columns on the walls then I would probably stick with 5/8" drywall. Like Big said, glue and screw to drywall can work pretty well (see Bacon Race theater). I might be a little (just ever so small) concerned that the drywall might crack along that edge but I'm definitely not a drywall expert so someone else may have to chime in on that. I can say that two layers of 5/8" drywall with green glue in between makes for a very solid panel and I think you would be hard pressed to get much flex in it on a 9" overhang.


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post #18 of 24 Old 09-13-2013, 08:29 AM
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Quote:
Originally Posted by BIGmouthinDC View Post

Here all I can get in 3/4 is T&G. 19/32 is square edge.
same here the 19/32" is what I used


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post #19 of 24 Old 09-13-2013, 08:41 AM - Thread Starter
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I called another building supply place 30 miles away today and they too confirmed that all they had was T&G. He went so far to say that he'd never seen square edge T&G in 5/8".

I do have enough 5/8" drywall to do both layers, I'm just concerned about the lack of support up on top of that one wall.


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post #20 of 24 Old 09-13-2013, 11:17 AM
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Rip the edge off the OSB and install a piece horizontally at the top of that wall and fill in with DW below.


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post #21 of 24 Old 09-13-2013, 11:21 AM - Thread Starter
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Good suggestion. Another suggestion was to pick up some steel angle -- drywall the ceiling first, attach the angle to the ceiling and it would give an edge for the wall to butt up against. Make sense?


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post #22 of 24 Old 09-13-2013, 03:14 PM
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Just a heads up.... the T&G typically found at the BB stores is "Scant sheet", so the sheets are typically ~ 5/8 narrower after putting them together. You can find "Full Face" sheets which net a full 48" after assembly but you may need to go to a lumber yard. Shouldn't matter if your running the sheets perpendicular to your channel, but something to keep in mind when you start putting 4-5 sheets together for a run then realize your 3-4" short....


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post #23 of 24 Old 09-13-2013, 05:58 PM
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I saw the same thing as you did. I'm just driving over to Michigan and buying OSB a 10 minute drive from the border and bringing back 5/8" OSB that is not Tounge and Groove

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post #24 of 24 Old 09-14-2013, 10:35 PM
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Home depot doesn't have it but Rona did and that's where I got mine.

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