Electrical Conduit Spray Foam

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.

Electrical conduit spray foam.

Store upright with a foam dispensing gun attached. When ready to change cans shake the new can of foam for a minimum of 60 seconds. In their continuing education class the instructor mentioned that the national electric code is monitoring the use of field applied spray foam and electrical wiring that becomes imbedded in the process. Invert can and insert it into the gap between wall and electrical box.

The fst seal has excellent adhesion to pvc rigid steel emt imc fiberglass and polyethylene conduits. Foam should be tack free in 10 to 15 minutes. Always leave a can of foam attached to the gun with the flow control screw closed. 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.

Wipe away imperfections with a cloth soaked in great stuff foam cleaner. 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.