Is there any simple way of replacing a single-gang box (already in the
wall) by a 2-gang? Adding an "old work" box alongside the original one
isn't going to allow me to use a regular 2-gang wall plate for the two
swithes or outlets, and I don't see how to remove the old box and
replace it with a 2-gang "old work" box.
Some boxes allow you to remove the side and attach an extension.
If your's doesn't, you are out of luck unless you can get the old
If it is a switch, you can go to the kind that has two in the space of one.
Sometimes you can get a sawzall blade between the old box and the stud
and cut off the nails. A hacksaw blade with tape wrapped around one end
for a handle would be a lot slower but give you move control so you
don't wreck the wall or cut the wires. (wrap it so it cuts on the pull
I have had pretty good luck by cutting the hole
out to the 2-gang width, then carefully prying the
old box away from the stud. Be sure to not let
the box wobble much, so it doesn't damage the top
and bottom of the hole. If you are careful there
will be very little damage, which will be covered
by the wall plate.
It's really not too hard to do. You remove the old single gang box,
which can be a little tricky depending on how it's attached to the stud.
once you have the old box out, you can enlarge the opening in the
drywall and intall a 2 gang box. get you one of the boxes that has the
little "ears" that clamp onto the drywall and it will make installation
I just did this same thing in the house I just moved into.
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