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Old 12-12-2008, 03:27 PM   #1
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Garage wall options


Hi all,

I'm converting a one-car garage to a woodshop. The garage is within the footprint of my split-level house and has two exterior walls (side and garage door wall) that are concrete. The two interior walls are cinder block. I'm in NY so I want to frame and insulate. I was thinking of 2x6 24" O.C. for the exterior walls so I could use R-19 batts, For the interior walls, 2x4 with no insulation (framed so I can nail hanging cabinets).

Can I finish the walls with either Plywood or OSB or do I have to use drywall?

Thanks in advance.

Larry

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Old 12-12-2008, 03:56 PM   #2
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Originally Posted by mediacop View Post
Hi all,

I'm converting a one-car garage to a woodshop. The garage is within the footprint of my split-level house and has two exterior walls (side and garage door wall) that are concrete. The two interior walls are cinder block. I'm in NY so I want to frame and insulate. I was thinking of 2x6 24" O.C. for the exterior walls so I could use R-19 batts, For the interior walls, 2x4 with no insulation (framed so I can nail hanging cabinets).

Can I finish the walls with either Plywood or OSB or do I have to use drywall?

Thanks in advance.

Larry
The code in my area requires 5/8" drywall in a garage!
However, if the garage door is removed and the opening closed off, it will no longer be a garage.
In this case, plywood or OSB may be used.
Better run this past your building authority!

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Old 12-12-2008, 06:49 PM   #3
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Quote:
Can I finish the walls with either Plywood or OSB or do I have to use drywall?
Ayuh,...

The Coolest garage I've ever seen, the guy drywalled the ceiling,+ covered the walls with steel siding....
Blue,+ White,... It's Beautiful....
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Old 12-12-2008, 07:45 PM   #4
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Garage wall options


If the garage door is to remain, it is still a garage even though it is used as a wood shop. If the garage door is being removed and framed in, I'd be inclined to say it isn't a garage since cars can't be parked in there. That's ultimately a decision the building official will make for you.

The code requires that the garage ceiling be rocked with 5/8" rock if any sleeping areas are located above the garage. If just attic or living space is above the garage, 1/2" drywall will suffice. All commonwalls between the house and the garage must be rocked with at least 1/2" rock. All structural elements (bearing walls, headers, posts) in a garage must be fire protected with 1/2" rock as well. Masonry walls are fire resistant and would certainly meet the equivalency of a sheetrocked wall.

Does that answer your question? Not sure what walls are being added and what openings are being eliminated.
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Old 12-12-2008, 07:47 PM   #5
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Plywood and OSB are just fine for use in garages, but in cases where the fire membrane is required you might have to rock over or under the plywood. Having the plywood exposed in the garage is not a code issue.
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Old 12-15-2008, 11:00 AM   #6
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Garage wall options


Thanks everyone for your replies. I'm not adding any walls. All I'm doing is framing out the existing 4 walls so I can 1) insulate the 2 exterior walls, and 2) provide a nailing surface for hanging cabinets. The garage, with its 2 concrete exterior walls and 2 cinder block interior walls, already meets code as is. So I guess the real question is do I have to use sheet rock over fiberglass batts or can I use ply or OSB.
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Old 12-15-2008, 12:10 PM   #7
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You can use ply or OSB since you already have the code-compliant fire separation. A lot of people add siding, paneling, slatwall, beadboard, or plywood in garages for good looks and to make hanging things easy. There's no issue with combustibility and the code.
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Old 12-15-2008, 09:21 PM   #8
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Before you do the walls put in lots of heavy guage wire with quality outlets so you won't burn up your tools.
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Old 12-16-2008, 11:20 AM   #9
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Thanks again. I'll be putting in electrical, but I'll post in the appropriate forum for that.

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