Retrofit Junction Box Ceiling

Typical cold climate construction.

Retrofit junction box ceiling.

Installing a light fixture or outlet in the ceiling requires an electrical junction box to hold the wire connections and the fixture or device. Buy an old work electrical box. Drywall 6mil vapour barrier fiberglass batt insulation. Turn off the power.

Do it carefully so as to not damage the existing wiring. Typically for new construction you d use an insulated and sealed box. To be clear by retrofit i mean the drywall is up and i d like to install this without having to repair any drywall. How do i retrofit a junction box and maintain the vapour seal.

They are often used in situations where you are adding outlets or extending an existing circuit in a room that is already finished. Before installing a ceiling fan make sure that you follow the portion of the electrical code that requires that you use a fan rated outlet box that will support the extra weight and the motion associated with a fan. An old work box is designed to be installed after the fact on walls that are already finished. Often wiring from that era of home construction now has dry brittle insulation on it.

Any disturbance to the wires could cause the insulation to break off. Replacement of old style ceiling electrical box.