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beecher92099 12-10-2006 06:28 PM

Drywalling over raised pipes/electrical
In my garage the walls are just studs with insulation in between but without any drywalling. It would be nice to clean up the appearance by installing the drywall, but the problem is there are quite a few pipes and flexible electrical conduit attached over the studs. I certainly don't want to attempt to reroute all this inside the studs, so the question is it practical or advisible to drywall in this situation? I was thinking I would have to install additional 2x4s (to provide clearance over the pipes and electrical) on the studs to provide a flat continuous surface to mount the drywall, but that would also leave a gap between the back of the drywall and insulation.

sjrhome 12-12-2006 06:52 AM

what you are proposing will be just fine. Just fur out the walls with whatever thickness you need and drywall it...done!:)

beecher92099 12-12-2006 11:10 PM

ok, thanks for the reply!

AtlanticWBConst. 12-13-2006 05:44 AM

What you are proposing is what would be called a 'sleeper' wall.

It is actually quite common to build such walls in the commercial field. We do this in steel framing in buildings where there are larger plumbing lines, conduits, access outlets. It is basically sandwiching the larger sized utility lines between 2 narrow (2x3) steel walls. In your case you could use 2x3 wood studs.
We also just did this last week on a 'bump-out' bathroom addition to an older home. The existing exterior wall was extremely wavy, so we built a sleeper wall in front of it using 2x3's.

FWIW: By code, you should be using Pressure treated lumber as your bottom plate. These only come in 2x4's. You can still do this by just setting your 2x3's toward the outside edge (usable space). Or you could just 'rip' down some dry PT 2x4's to 2x3 dimensions. Also, when you build your sleeper wall, there is no need to insulate the new wall cavities since you have that existing outer wall insulated already...

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