SIP electrical boxes
Last Post 02 Feb 2010 11:38 AM by Bigrig. 7 Replies.
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sgo70User is Offline
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10 Jan 2010 08:47 PM
I'm sure this has been asked a thousand times but I can't find anything. I'm ready to do my electrical installation and I can't find face mount boxes that will sit 1/2" proud for the drywall. What does everyone use, a link, picture or brand name would be a nice start. I asked at a few stores and they keep showing me exterior plugs. Thanks, Sean
wesUser is Offline
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11 Jan 2010 06:08 AM
Carlon makes several plastic boxes designed to set 1/2" proud for your drywall.
Their A-122 is a single gang and the A-238 is a double gang box.
These should be available from Lowes, and probably Home Depot, if you can't find them at your local electrical supplier.
You can see these boxes on the Lowes website.
Wes Shelby
Design Systems Group
Murray KY
wandr@ainweb.net
sgo70User is Offline
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11 Jan 2010 09:31 AM
Thanks Wes, I couldn't find any at Home Depot but I'm sure someone in town will have them. My SIP supplier is coming by today so I'll ask him where he got his. Thanks again, Sean
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12 Jan 2010 07:40 AM
SGO,
I used the "blue ones" from Lowe's. They have a flange that sticks out about 1" on one side. Screw this into the SIP. This gives you the bump out for the drywall. Since these are plastic, I also sunk a screw ont he other side into the osb kind of sideways. This held the box great with no movement when pluggin and unplugging. Depending on the size you cut out, it may deform the box slightly but the cover, well, covered it.
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15 Jan 2010 05:09 PM
We use regular electrical boxes and foam them into place (with the nails protrouding). To easily achieve this, we have a template that we quickly and temporarily tack to the wall and then router out the box hole. Then we put the box in (after we pull the wires into it of course) and hold it and foam it into place. It is placed flush with the template which happens to be the same thickness as the drywall to be applied. Presto, job done.
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01 Feb 2010 09:07 PM
This may be a little late but I try to traine electricians that are new at Sips to use a 4" round hole saw and round electrical boxes for single plug, switch and fixtures. it goes very fast! Keep all of the 4" plugs in a 5 gal bucket. If you get hung up anywhere just pop a hole with the hole saw to help cut down on some of the long runs to pull romex through. Then any extra holes you have that don't have a plug or a switch just foam the plugs back into them...
President/CEO
Green Walls-US, INc.
SIPs, ICF's & Antique Timber Frame
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02 Feb 2010 09:34 AM
When using the round box for outlets and switches, what kind of cover plate do you use?  The normal rectangular cover plates would not cover the round box; do they?
BigrigUser is Offline
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02 Feb 2010 11:38 AM
Sounds like he is using one of these (sans the nailing wings): http://www.hubbellcatalog.com/raco/raco_datasheet.asp?PN=7052&FAM=RacoBoxes&P=12843,11533,2081 Then using a 4" square to 1 or 2 gang adapter plate. Unless they are also available 1n a 2-gang version. My only concern would be the increased loss of insulation value at the box locations. Probably not enough to make a detectible difference in an average home.
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