Bath Vanities

How to Install a Bathroom Vanity / Vanity Top


  1. 1) Clean the floor area where the cabinet is to be installed thoroughly to remove any dirt or debris.


  1. 2) Locate the wall studs behind the vanity cabinet location and mark the center line of each stud just above the cabinet height.


  1. 3) Position the vanity cabinet in place, making sure to feed the water supply lines and drain pipe through the open areas in the back of the vanity, and push it tightly against the wall. The rear vertical edge of both side walls should be tight to the wall surface.


  1. 4) Attach the rear top rail of the cabinet to the wall at the wall studs located in Step 3 with 2.5-inch plated screws.


  1. 5) Now that your vanity is securely installed, you are ready to begin installing your vanity top.


  1. 6) If needed, attach your sink(s) to the vanity top.  To do this, use a clear epoxy or silicone and simply clamp the sink into place.  For a more detailed guide on installing an undermount sink using silicone, visit the following page: SINK INSTALL 


  1. 7) On many vanities, (most common on smaller vanities, and when combining multiple vanities with one top) you will need to cut a small notch out of the center panel inside the cabinet so the undermount sink(s) will fit properly.  This is normal and will not harm the structural integrity of the vanity at all.


  1. 8) Trial fit the vanity top on the cabinet to see if you will need a notch cut, if so, mark the area to cut with a pencil and remove the top.


  1. 9) Using a jigsaw, carefully cut the notch marked in the previous step and once again trial fit the vanity top to ensure a good fit before moving on to the next step.


  1. 10) Most bathrooms don’t come with the luxury of a lot of space. When you’re installing a new vanity, save yourself uncomfortable work and install the faucet before you install the top to the vanity. This will save you a lot of trouble underneath the sink once it’s glued to the vanity.


  1. 11) After your top has been trial fit and the faucet has been installed, you are ready to secure your top to the vanity.


  1. 12) Run a bead of clear silicone adhesive along the top edge of the vanity cabinet.


  1. 13) Carefully place the vanity top onto the cabinet and situate it where you want it.


  1. 14) Once everything is in place, use a wet rag to clean up any silicone that has seeped out from under the vanity top.


  1. 15) If you have granite back and side splash, put the same silicone adhesive on the bottom edge and the back side and secure to the wall.  Again, clean up any seepage.


  1. 16) The final step is to install your plumbing and enjoy your new vanity!


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