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Many questions: Ceiling, drywall, electrical, lighting

FakeName

Well-known member
Joined
Nov 10, 2008
Messages
171
Location
San Diego, CA
OK- deep in planning. Currently, (see images) the ceiling is open, with joists 48" apart. There is no insulation in the rafters. I'm using the "attic" area for long-stuff storage, but have alternatives for that. I'm considering ceiling solutions, and would appreciate your input. The garage measures about 13x21.

One solution would be drywall.

Another would be a drop ceiling, which is more attractive to me because of the ease of changing overhead stuff, like electrical, air plumbing, retractable reels for air hoses, etc. I'd use a set of 2x4 troffer lights- probably 8 units. If I do the drop, do I have to use metal-jacketed wiring? I know I do in a commercial building. If I use drywall instead of drop, can I use the same troffer fixtures? They seem like a cheap solution.

Another would be to insulate along the rafters- (foil-faced fiberglas or the new foil/airbubble stuff?) and keep the attic space open. I'd then use 8' twin-tube fixtures along the joists, probably 8 of those. I like a lot of light. This would allow for the flexibility, but have an "unfinished" look.

Is there a fire consideration here? Is 5/8 sheetrock more fire retardant than the drop ceiling materials? The bare rafters seem like a lot of flammable material. The garage is detached from our home, but only by a few feet.

Another question- I saw another thread where the owner used OSB instead of drywall on the walls. That seems to be an odd choice for fire retardant. Am I missing something? Is there an advantage to using 5/8 on the walls?

That's it. For now.

Thanks.

fn

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rakesdl

Well-known member
Joined
Sep 10, 2008
Messages
156
Location
Radford Virginia
I used 1/2 OSB on my walls and ceiling, (reason)--- I can hang anything I want where I want, it provides good insulation. Since you have the ceiling open now just make sure that you add all the wiring and other things that you will need before covering walls and ceiling.
 
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kvom

Well-known member
Joined
Feb 1, 2008
Messages
820
Location
*******, GA
5/8X drywall is quite fire-resistant. You can hang lights from it via toggle bolts. For wiring, Romex along the joists is fine. Whatever you use I'd recommend blown-in insulation rather than batts.
 
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