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How to Install a Medicine Cabinet

By Edited Sep 9, 2015 1 0

When I first thought about renovating one of my bathrooms it always seemed to be too big of a project and that mindset held me back for year. For years I lived with this all or nothing mentality rather than making smaller changes that lead to big results. It was not a matter of money, I just wanted to do it all at once, but inevitably I did nothing.

Finally I started doing smaller projects in the bathroom such as installing a new medicine cabinet above the bathroom sink and vanity. This particular model was a surface mounted version, although it had an option to be recessed into the wall.  It also had four lights along the top that were built into the cabinet.

If you want to install a cabinet so that it is recessed into the wall, measure the space carefully before going out and buying a new one. In fact, the measurement is so critical that you probably need to remove the old one first to get an accurate measurement.  However, if it contains lights within the cabinet assembly, do not forget to turn off the power at the circuit box before removing any pieces.

As far as home improvement projects, this is one of the easiest ones and does not require a lot of specialized tools. Typically you will only need a power drill, possibly a masonry bit if your walls are made of tile, a screwdriver, a level, tape measure and maybe some wire strippers if you are running new wire.

If you are rewiring for built-in lights, check with your local codes because they may require that the work be performed by an electrician. In that case, you may need to get a permit before the work is completed.  

Types of Medicine Cabinets

Medicine cabinets come in all styles and colors, some steel, other made of wood or plastic. There is a price point for every type of buyer.

There are basically three types of medicine cabinets.

Recessed Cabinets - installed into the wall between two wall studs with the front flush with the wall.

Surface Mounted – the back of these united are flush with the wall and have holes in the back to mount to the wall. Most professionals recommend that if your bathroom wall is a load bearing wall, you should install a surface mounted unit. This is the easiest type of medicine cabinet to install.

Semi Recessed Unit - mounted between the studs inside the wall and protrudes slightly past the drywall on the exterior.

Installing a New Surface Mounted Medicine Cabinet

The following steps assume that you are removing an old cabinet and installing a surface mounted unit with lighting attached within the unit.

  1. Turn off the power to the bathroom at the circuit breaker box then remove an electrical tape or wire nuts from the connections.
  2. Remove any screws that hold the medicine cabinet in place then the unit should pull freely from the wall.
  3. Now you may be staring at a big hole in the wall depending on whether or not you have removed an old recessed model. Surface mounted versions do not mount to the sides of the wall studs like a recessed one, so you will need to create some wall anchors first before proceeding.
  4. Hold the new cabinet up in place where it will sit and place a 3 foot level on top of it to make sure it is level.
  5. While holding it steady, mark the locations of where the wall anchors will go through the
    How to Install a Medicine Cabinet
    holes in the back of the cabinet. If you are are installing it on drywall, these can be done with a pencil. However, if you are working with tile, you either need to use a black marker or drill a small hole to mark the location until you can drill further.
  6. Now that the location of the screw holes are marked, set the new cabinet aside and drill holes into the wall as specified by the manufacturer.  The unit will probably include plastic anchors to surface mount it to any wall, but if you are installing a large unit into drywall, you may need to buy stronger anchors at the hardware store. For a tile wall mount, the plastic anchors will work fine for any normal sized medicine cabinet.
  7. With the hole drilled and the anchors inserted into each one, position the cabinet on the wall so the holes in the back line up with the anchor holes on the wall. Some people like to start driving the screws to hold the cabinet in place with a screwdriver, then finish it up with a power drill. However, do not completely tighten any of the screws into all of the screws have been inserted and are partially tightened. Alternate tightening each one in place, sort of like you would alternate tightening lug nuts on are a car wheel.
  8. Route the electrical wires from the breaker into the cabinet and secure them.
  9. Connect the ground wire to the cabinet.
  10. Connect the black wire to the black wire on the unit.
  11. Connect the white wire to the white wire on the unit.
  12. Place a wire nut on each connection, then wrap with black electrician’s tape.

Final Thoughts

How to Install a Medicine Cabinet
If you purchased a metal cabinet that does not have flush sides, you can easily create them using small pieces of wood purchased in any home improvement store. Then simply glue them to the sides of the metal box with construction adhesive for a flush, professional look.

In all, this type of project should only take a few hours depending on the type of installation you are doing and how much electrical work is involved. The biggest expense will be the type of medicine cabinet you decide upon as there are not special tools or additional items required for installation.  You can easily replace your old unit with a very nice, modern looking fixture for under $200.

Jensen B7733 Focus Single-Door Recessed Medicine Cabinet, 3-Shelves
Amazon Price: $114.00 $86.94 Buy Now
(price as of Sep 9, 2015)


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