Countersink the screws slightly.
Installing wooden beams on ceiling.
Stretch a chalk line across the ceiling and snap it to keep lines even and to mark the necessary grids.
Nail the first lvl to the joists then nail the second to the first and so on.
Reinstall fixtures and turn power to room back on.
Cut the 2x4 lengths with a circular saw and install them between the joists flush with the bottom of the joist.
Install the beam one lvl at a time.
Repeat with other planks around outlets.
Continue installing planks until entire ceiling is covered image 3.
Cut out marked area with a jig saw image 2.
Measure and mark the ceiling where you intend to install the beams.
Spread heavy duty construction adhesive between the beams for extra strength.
Hold plank up to outlet to make sure cut is in proper place.
Use screws through the beam and into the blocks of wood on both sides of the beam and on all of the blocks of wood.
Minimum of two screws per side.
The screws hold the beams in place while the glue dries.
Existing ceiling joists can definitely be used but if you have removed the ceiling to install a new one this is a good opportunity to add blocking between the beams.
Nailers are thin strips of wood that the beam will fit over snugly.
Install blocks every two feet and nail or screw them in place.