How to Replace and Install a New Vanity Top in Your Bathroom

Quck answer

To remove and replace a bathroom vanity top, follow these steps:

1. Prepare the area: Turn off the water supply and disconnect the plumbing. Remove any items on the vanity top and clear the surrounding area.

2. Remove the old vanity top: Loosen and remove any screws or adhesive holding the top in place. Carefully lift and remove the old vanity top, taking care not to damage the plumbing or the vanity itself.

3. Install the new vanity top: Place the new vanity top on the cabinet, ensuring it fits properly. Secure it in place with screws or adhesive, following the manufacturer’s instructions.

4. Reconnect the plumbing: Reconnect the water supply lines and drain pipes. Check for any leaks and make sure everything is securely connected.

5. Clean and finish: Clean the vanity top and surrounding area. Apply any necessary caulking or sealing to ensure a watertight fit.

By following these steps, you can easily remove and replace a bathroom vanity top, giving your bathroom a fresh and updated look.


If your bathroom vanity is not up to par, you can greatly improve its appearance by replacing the vanity top. While you’re at it, you might also consider replacing the sink and faucet, although it is not necessary as long as they are compatible with the new vanity top. However, if you want to completely transform your bathroom vanity, it would be worth the extra effort and expense to replace these fixtures and even repaint the vanity cabinet.

Replacing a vanity top may sound complicated, but it is actually a simple process that does not require much strength or skill with power tools. The only power tools you might need are a drill and a jigsaw, and the jigsaw is only necessary if you choose a wood or solid-surface top without pre-cut holes for the sink and faucet. If you prefer a stone countertop with custom holes, it is recommended to have it professionally cut.


Image Credit:
Nicole Mason

Options for a New Vanity Top

You can purchase a new countertop from the same store where you bought the bathroom vanity, or you can have one custom-made. According to HomeAdvisor, some stylish alternatives include:

  • Stone: Solid granite, marble, or quartz composite can add luxury to any bathroom and can be paired with an undermount sink and modern faucet to create an extraordinary look.
  • Tile: You can create a custom base with plywood and cement board, and then tile it to match your bathroom decor. Tiling may be a separate project, but installing the top is as easy as installing any other top.
  • Laminate: Replace your plain laminate top with a more colorful option.
  • Solid surface: Durable and attractive options such as Corian, Silestone, and cultured marble vanity tops can be paired with integrated sinks that are easy to clean.

Things You’ll Need

  • Caulk remover (optional)
  • Shims
  • Silicone caulk
  • Drain tailpiece
  • Tape measure
  • Screwdriver
  • Adjustable pliers
  • Adjustable wrench
  • Utility knife
  • Pry bar
  • Putty knife
  • Hammer
  • Chisel
  • Pad sander
  • Level

Guide on Removing and Replacing a Bathroom Vanity Top

Step 1: Measuring for the New Vanity Top

Using a tape measure, measure the dimensions of the current vanity top. The new vanity top should have the same dimensions, but if there is more space available, you can choose a slightly larger one. However, be careful not to make it too large, as it should not overhang the cabinet by more than an extra inch in any direction. This would make it look unbalanced and could hinder access to the cabinet.

Step 2: Disconnecting the Plumbing

To make it easier to work inside the vanity cabinet, remove the doors using a screwdriver. Turn off the water supply shutoff valves and open the faucet to release water pressure. Squeeze the clamp in the stopper lever in the sink tailpiece to unhook the pop-up stopper and disengage it from the lever.

Unscrew the compression nuts at both ends of the drain P-trap using adjustable pliers or by hand. Pull the trap down, swing it away from the drain tailpiece, and remove it from the waste inlet. Empty the trap into a bucket and set it aside for future use.

Using an adjustable wrench, unscrew the faucet hoses from the shutoff valves. You can leave the hoses attached to the faucet and remove them after taking off the vanity top.


Image Credit:
Stephen Paul for Hunker

Step 3: Cutting the Caulk Along the Wall

Carefully cut the caulk around the edges of the vanity top where it meets the wall using a sharp utility knife. Take caution to minimize damage to the drywall. Once the top is removed, you can clean off any caulk residue from the wall.

If there is a backsplash attached to the wall separately from the bathroom countertop, it needs to be removed as well. Most backsplashes are glued, and you can pry them off using a pry bar. If you do not plan on replacing the backsplash, some drywall repair will be necessary.

Step 4: Removing the Old Vanity Top

Check underneath the vanity top for any fasteners securing it to the cabinet and remove them using a screwdriver. In most cases, the vanity top is glued to the cabinet, so you will need to break the glue bond. Insert a putty knife between the cabinet and the vanity top and tap it with a hammer to break the bond.

Work your way around the front and sides of the vanity, then insert a pry bar and lift the top upward to remove it. Once the vanity top is free, have a helper lift it off the cabinet. Place it upside down on two sawhorses or other supports so that you can remove the sink and faucet. It is recommended to do this even if you plan on discarding everything.

Step 5: Cleaning Up the Cabinet and Wall

Use a chisel to scrape off any caulk and adhesive from the top edge of the cabinet, or use a pad sander to sand it off. Remove caulk residue from the wall by scraping with a putty knife and pulling off any caulk strings by hand. Silicone caulk can be challenging to remove, so it may be helpful to soften it with a commercial caulk remover before scraping.

Step 6: Installation of the Sink and Faucet

Secure the sink and faucet to the new vanity top using the provided hardware and following the instructions of the manufacturer. Attach the sink drain assembly and connect the water supply lines to the faucet inlets before placing it inside the cabinet.

Step 7: Installation of the New Vanity Top

With the help of a partner, lift the new vanity top and place it onto the cabinet. Use a level to ensure it is even and use shims if necessary to level it from side to side and front to back. Remove the top and apply a line of silicone caulk along the top edge of the cabinet and on both sides of each shim. Carefully readjust the position of the vanity top before setting it back in place. Use any provided fasteners to secure it to the vanity cabinet.

Step 8: Sealing the Edges

Apply a line of silicone caulk along the edges of the vanity top or backsplash where it meets the wall. If the top has a drop-in sink, this is also a good time to seal around the rim of the sink. If you are replacing an old backsplash or installing a new one, use caulk to glue it to the wall and seal it.

Step 9: Connecting the Plumbing

If you have not done so already, attach a tailpiece to the sink drain assembly. If you are installing a new faucet, use the tailpiece that comes with it to connect the pop-up stopper. Connect the P-trap to the tailpiece and waste outlet. You can use your old P-trap if it fits.

Use an adjustable wrench to screw the faucet supply water lines onto the shutoff valves. Tighten them securely. Turn on the valves and then turn on the faucet. Fill the sink, let it drain, and check for any leaks in the faucet hoses and drain assembly.

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