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#100774 01/04/07 08:00 PM
Joined: Oct 2003
Posts: 259
I always use a PT 2X4 and mount that to the concrete then mount my plywood to the 2x4's.

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#100775 01/04/07 09:40 PM
Joined: Jul 2002
Posts: 717
Emt straps also corrode, as do the mounting screws for the panels, and so forth and so on.

#100776 01/04/07 10:56 PM
Joined: Mar 2005
Posts: 1,213
New PT is copper-treated and will create corrosion problems of its own!

#100777 01/05/07 12:05 AM
Joined: Jul 2004
Posts: 9,788
Likes: 14
Those plastic panelboard enclosures look better every day. [Linked Image]
If this is above ground, a stucco'ed concrete wall is pretty dry. A galvanized 1900 box should last forever.
Before you stucco a block wall you can blow water through it with a garden hose. We never hang drywall before stucco.

Greg Fretwell
#100778 01/05/07 04:47 AM
Joined: Jan 2003
Posts: 4,391
Here in this area basements are poured concrete with code required damp proofing applied to the outside.

In general most modern basement walls in this area are not damp once the concrete cures.

In the commercial jobs usually the specs will require a water proofing membrane be applied to the outside of the concrete.

Once cured these walls will not be damp again.

My own basement is made of stones, very damp and very tough to hang panels on, I built a plywood wall about 4" off the stone to let air flow behind.

Bob Badger
Construction & Maintenance Electrician
#100779 01/05/07 11:31 AM
Joined: Jul 2004
Posts: 9,788
Likes: 14
Bob, that was my thinking too. When I set the "way-back" machine to when I was living in the frozen subterrainian north I remember basemenmt walls were parged and painted with black tar.

Greg Fretwell
#100780 01/06/07 08:32 AM
Joined: Sep 2006
Posts: 111
Up here in Canada we used to have to put drywall behind the panel in basements. Not anymore. I think it was for fire protection?

#100781 01/06/07 04:55 PM
Joined: Apr 2001
Posts: 449
I always use unistrut when mounting a panel to a poured concrete or block wall in a basement or above grade.

#100782 01/06/07 09:27 PM
Joined: Jun 2005
Posts: 821
Fred, do you use the strut to mount a sheet of plywood?

Or do you use the strut to mount the panel directly to the strut?

Don't mind me asking, I'm always interested in new ways of doing things to better improve my work.

#100783 01/06/07 10:04 PM
Joined: Apr 2001
Posts: 449
I mount the panel to the strut, usually. I have used unistrut to mount a 4x4 sheet of plywood for mounting the panel, video and phone equipment. It was a request from the homeowner and over-kill in my opinion.

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