On 03/15/2010 08:06 PM, hr(bob) wrote:
On Mar 15, 3:17 pm, "John wrote:
Almost ready to start the rewiring of my house, just need to finish up
my plans. I am probably going to go with plastic old work boxes that
are 3.5" inches deep in most situations.

This is going to leave me with 3/8" at most between the back of the
box and the sheathing on my outside walls(3/8 drywall).

Any reccomendations on how to insulate behind the boxes and around the
sides of them?

*One way is to use a vapor box around the electrical box:http://www.energyfederation.org/cons...ath/21_1272_62

Another method that I have used with outdoor receptacles that have recessed
boxes is to wrap the electrical box with a putty pad. They can be a little
expensive though.

Others may suggest spray foam. I have never tried that.

You could also use 4"x4"x1.5" square electrical boxes. That will give you
room to put insulation behind.

Why not use spray foam, and shallower boxes on all exterior walls???

see the other thread going boxes, code doesn't let you use shallower
boxes if there's more than one cable.

nate

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