When you cut the wallboard or plaster and lather in a kitchen or bathroom area, you may encounter wiring, water pipes, vents, structural framing for windows or pocket doors, or heat and air ducts. However, if you do not run into any of these obstacles, installing a recessed medicine cabinet is fairly simple.
Tools: drill, utility knife, circular, reciprocating, hammer level, plumb line, screwdriver
Supplies: common nails, screws, 2 by 4s to size
1. To install a standard-size medicine cabinet, determine where you want to place it, and locate the nearest studs. Measure the unit, and mark the measurements on the wall. Turn off your electricity to avoid cutting hidden live wires and cut out the section. Toenail two sections of 2 by 4 to fit horizontally between the studs and flush with the opening you've cut.
2. To install a larger unit, start by determining where you want to place the cabinets, and locate the studs closes to the outside edge. Measure the unit and add 1/2 inches top and bottom to accomodate 2 by 4 headers.
3. Cut any obstructing studs. Then cut and install the top header. To provide maximum support for the cut stud in a hearing wall, use a double header. Two flat 2 by 4s are sufficient if there is no more than one cut stud to work with. Toenail in place and check with a level.
4. Next, install cripples. Measure the distance from the header to the floor, cut two 2 by 4s to length and nail them to the two outside studs on the wall.
5. Install the bottom support between the cripples. If you're installing a mid-size cabinet, add a filler piece and blocking to create the correctly sized opening for your cabinet. If you're centering the cabinet in the space, follow the procedure for both sides. Install the cabinet according to the manufacturer's instructions, plumb and screw the cabinet, within its frame, hang the doors and install hardware. Then patch the wall.