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How To Install a Bathroom Vanity


Bathroom vanity cabinet



A new bathroom vanity cabinet can give you more counter space and better storage options. Installing a vanity is almost the same as installing a kitchen cabinet. Because vanities tend to get a lot of use and are exposed to moisture, pay particular attention to the quality of construction.


This project guide outlines the steps to install a single cabinet, one-piece bathroom vanity. If you are installing a series of cabinets, you may also want to refer to the Installing Kitchen Cabinets Project Guide.










• Shut off the water supply lines at the sink, or at the home's main supply if necessary.

• Disconnect the supply lines and the waste trap from the sink.

• Remove the sink and faucet, then disassemble the existing vanity.

• Patch up and paint or tile the wall where the sink and vanity once stood if necessary.




• Follow generally accepted guidelines for clearance with the bathroom, particularly around fixtures.

• Ensure the room is well-lit and safe for occupants of all ages.




• Include plenty of storage and plan for privacy.

• Installing a vanity that features two sinks instead of one can speed up the time it takes for your family 
  to get ready in the morning and can help maximize available space.




Step 1: Trace the outline of the vanity

Trace outline of vanity to screw it Put the vanity in position and trace its outline on the wall. Use a stud finder to locate the studs to which you will screw the vanity. With a level, draw lines along the studs from the floor to the top of the vanity. These lines will help you spot where to place the screws in Step 3 below.

Step 2: Position the vanity

Place the vanity in position

If the vanity has a back, measure, mark, and drill holes through it for drain pipes and supply pipes. Then put the vanity into position.

Set a level on top of the vanity and shim at the floor until the vanity is level. Then hold the level against the edge of the unit and shim at the wall until it is plumb.


Step 3: Attach the unit

Attach the unit to the wall by screwing

From the inside, attach the unit to the wall by screwing 3-inch drywall screws through the mounting rail into the studs. Check for level again before trimming the shims flush with a utility knife. If it is not level, add shims. Shim the back and sides as necessary to level.

If there are large gaps at the wall or floor, attach quarter-round moulding along the wall or floor edge with finishing nails.


Step 4: Install faucet into vanity top

Install a faucet vanity Follow the manufacturer’s instructions to install the faucet and drain assembly to the vanity top.

Step 5: Secure vanity top

Properly secure the vanity top to the vanity

Dry-fit the vanity top over the vanity. Make sure the wall is straight and that there are no gaps between the wall and the vanity top. Follow the manufacturer’s instructions to properly secure the vanity top to the vanity. Most installations require a small bead of silicone caulk applied to the top of the cabinet before the vanity top is set into position. Firmly press the vanity top into position; check for level, evenness (symmetry) across the front of the vanity, and make sure the vanity top is flush to the wall. Add backsplashes and sidesplashes following the manufacturer’s instructions.


Step 6: Reconnect water supply

Reconnect water supply lines Reconnect the faucet supply lines (or install new lines) to the water supply and reconnect the trap. Turn on the water supply or the home’s main water supply and test for leaks. Install the pop-up drain.