DIY Framing for a New Ceiling Fixture

This articles describes installing 2x4 framing for a new ceiling fan or light fixture if no outlet box exists in the desired location. Check these links for help replacing an existing ceiling fixture and wiring diagrams for a fan/light kit.

Choosing a Location

To install a new ceiling fixture first determine where it will be located. If you're installing a new fan be sure to place it so the the blades are at least 30 inches from all walls. Also look for a location that will be near an existing electrical source. For instance if there's a circuit receptacle nearby with available power it can be used to serve a wall switch and then the ceiling fixture. Check

locating an electrical source and fishing cable for more about installing the wiring required for a new ceiling fixture.

With Attic Access

Working in the unfinished attic space above the new fixture location, measure the distance between the two nearest ceiling joists. Cut a 2x4 to this length and attach a new, fan–rated outlet box to the midpoint using deck screws.

With the 2x4 and box assembled, hold them between the joists so the outlet box presses against the ceiling. Trace the outline of the box with a pencil to mark the hole. Remove the assembly and cut a hole along the trace line using a drywall saw for drywall or gypsum board plaster and a reciprocating saw for wood lath plaster.

After cutting the hole, put the 2x4 between the joists again and set it so the outlet box sits flush with the finished ceiling surface. Have a helper hold a board over the outlet hole to support the box and keep it at the proper level while securing it in place with two 3 inch deck screws through each joist.

With No Attic Access

If no access is available from above you can install a specially made, adjustable fan support, working through the outlet hole. Using this method it can be difficult to set the outlet box at the proper finished level. An easier way to be sure of proper placement is to use the method below to install a wood frame. The ceiling must be cut to do this, after which the damage can be patched and/or covered with a decorative medallion.

Locate the two joists nearest the new fixture location using a stud finder or tap on the ceiling until the sound indicates the general location of the joists. Use a drill and an eighth inch bit to drill through the plaster where the joists are estimated to be. Drill holes at 1" intervals until wood from the joist is ejected from the drill bit. Mark the location of each joist.

Hold the outlet box against the ceiling about midway between the joists and trace the outline with a pencil. Cut a channel from one joist to the other, the same width as the outlet box. Use a drywall saw to cut gypsum board and a reciprocating saw to cut wood lath plaster.

Measure Between Joists

Measure the distance between the joists and cut a 2x4 to this length. Attach a fan–rated outlet box to the midpoint of the 2x4 where you want the fixture to be. Attach a joist hanger to each end of the 2x4 keeping it flush and not protruding past the end of the support.

Place the Support

Insert the support assembly between the joists and set it so the outlet box is flush with the ceiling surface.

Install the Support

Attach the metal hangers to the joist using deck screws or nails, making sure the outlet box remains flush with the ceiling surface.

Repair Ceiling Board

Cut drywall patches to fit the space on each side of the new outlet box and cover them over with joint compound.

Install a Ceiling Medallion

Skim coat several times to build up a smooth finish or cover the rough repair with a preformed ceiling medallion. A plastic medallion can be installed using caulk to stick it to the ceiling surface or using the fixture cover plate to hold it in place. If using a plaster medallion use setting joint compound to attach it to the ceiling.