How to Install a Wall-Hung Vanity


When bathrooms are small and tight, a wall-hung vanity is an ideal way of making the space feel more spacious. The vanity not only opens up the bathroom and makes it feel bigger; it also brightens the room and makes cleaning the floors easier. Additionally, a wall-hung vanity adds a modern, contemporary touch in even the most traditional of homes. With an easy installation job, wall-hung vanities may become the centerpiece of any bathroom.

Determine the Location

Before installing a wall-hung vanity, the first step is determining the final location for the vanity and marking out the area. This gives the homeowner an idea of how the vanity and mirror should fit into the space. If necessary, this is the time for making adjustments to the placement of the vanity. For bathrooms that already include a vanity, the best location is where the old vanity resided, because that is the location of the plumbing, drains, and water lines.

Installation Process

After determining the location for the wall-hung vanity, draw the outline of the vanity on the wall and mark the depth of the vanity on the floor with masking tape. This helps prevent against any obstruction in the bathroom, such as pathways or fixtures.

Locate the Studs

Once the outlines are in place, use a stud finder and mark the location of the studs on the wall, keeping these marks outside of the outline of the vanity. After locating the studs, measure the distance from the edge of the vanity outline to the drainpipe sub-out and water supply valves, and then transfer the measurements onto the back of the vanity.

Cut Access Holes

After marking the locations of the plumbing on the vanity, use a drill and cut access holes in the back of the vanity. For an easier time setting up the plumbing, cut the access holes larger than the actual size of the pipes.

Set the Vanity in Place

Next, lift the vanity and put it in place against the wall, taking care that the vanity remains inside of the markings on the wall. Because nobody wants a crooked vanity, use a level and ensure that the vanity is level and even. Hold the vanity in place by placing wood shims or blocks underneath it.

Install the Vanity

Once the vanity is set in place, screw the vanity into the wall by drilling wood screws through the back of the vanity. When screwing it in place, use the stud location markings as a guide for placing the screws, which helps prevent the vanity from falling off the wall and tearing the drywall. Next, spread a layer of silicon caulk evenly along the edge of the sink opening before resting the sink in place.

Install the Faucet

The next step in installing the wall-hung vanity is inserting the faucet. Begin by taking a bit of plumber’s putty and rolling it until it forms a 1/4-inch diameter rope. Apply this rope around the base of the new faucet spout, which prevents water from leaking into the vanity. After applying the rope, place the spout in the hole in the vanity and tighten the nut on the underside of the vanity with an adjustable wrench.

Assemble Mixing Valves

If the faucet includes separate hot and cold handles, assembly of the hot and cold mixing valves is necessary. For these double-hole faucets, a C-clip holds the valve on top of the vanity while a nut and washer tighten it from below. When assembling the mixing valves, begin by applying plumber’s putty underneath the top washer, install the C-clip, and then finish by tightening the nut below the faucet. Remember when installing the valves that hot water is on the left and cold is on the right.

Install the Water Line Extensions and Drain Rods

After the faucet and mixing valves are in place, the final step in installing a wall-hung vanity is hooking up the water lines and drain rods. While some faucets include easy snap-end fittings for the water lines, others use threaded fittings that often need plumber’s tape. Once the water lines and drain rods are installed, the wall-hung vanity is ready for use.


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