Always leave a can of foam attached to the gun with the flow control screw closed.
Electrical conduit spray foam.
When ready to change cans shake the new can of foam for a minimum of 60 seconds.
Invert can and insert it into the gap between wall and electrical box.
Activate can by pulling the trigger.
The fst seal has excellent adhesion to pvc rigid steel emt imc fiberglass and polyethylene conduits.
Typically rough in electrical will be done before spray foam is applied with final connection of fixtures and other devices occurring after however it is often impossible to avoid running at least some circuits in insulated walls after the spray foam has been completed.
1 normal spray foam has chemicals in it including solvents and formaldehyde which dissolve the insulation on electrical wiring ditto to caulks 2 putting foam in there will thermally insulate the wiring potentially causing it to heat up more than it should.
Foam should be tack free in 10 to 15 minutes.
It creates a semi permanent seal and is reenterable.
There have been failures in the wiring because of the heat that can build up in the covered wires.
Fst is a proven solution that has been used for years to protect switchgear panels riser poles combiner boxes meters and all types of electrical and telecommunication apparatus.
Store upright with a foam dispensing gun attached.