Retrofit Junction Box Ceiling

Learn how to retrofit a ceiling fan electrical box.
Retrofit junction box ceiling. To be clear by retrofit i mean the drywall is up and i d like to install this without having to repair any drywall. Typical cold climate construction. Any disturbance to the wires could cause the insulation to break off. Buy an old work electrical box.
Do it carefully so as to not damage the existing wiring. Replacement of old style ceiling electrical box. Drywall 6mil vapour barrier fiberglass batt insulation. Turn off the power.
Often wiring from that era of home construction now has dry brittle insulation on it. Installing a light fixture or outlet in the ceiling requires an electrical junction box to hold the wire connections and the fixture or device. You will need to remove the old pancake junction box. Installing a ceiling electrical junction box.
Typically for new construction you d use an insulated and sealed box. They are often used in situations where you are adding outlets or extending an existing circuit in a room that is already finished.