A bathroom vanity upgrade or replacement is one of the easiest ways to update the look of your bathroom. Replacing an outdated vanity and sink can make your bathroom feel fresh and modern. While it may seem daunting, installing a new vanity is a manageable DIY project for most homeowners. Here is a detailed guide on how to replace and install a new bathroom vanity and sink.
Selecting a New Vanity and Sink
The first step is choosing a vanity and sink that fit the style, size and storage needs for your bathroom. Consider the following when selecting:
Style
Vanities come in different styles including:
- Traditional – Features intricate detail, molding and carved accents for a classic look. Often made of wood.
- Contemporary – Clean, sleek lines. Often made of metal, glass and engineered wood.
- Transitional – Blends traditional and contemporary with simple lines and minimal ornamentation.
- Modern – Very streamlined look with straight, unadorned lines and geometric shapes.
Choose a style that fits your existing bathroom decor. The vanity will set the tone for the whole space.
Size
Measure the existing vanity and space in your bathroom. Standard vanity sizes include:
- 24 inches – Best for small powder rooms
- 30 to 36 inches – Ideal for primary bathrooms with single sinks
- 48 inches – Works for larger bathrooms and dual sink vanities
- 60 inches – Allows for his/her sinks in a spacious bathroom
Make sure to account for additional clearance needed for drawers and doors to fully open.
Material
Vanities are crafted from different materials including:
- Wood – Classic material available in many stains like oak and maple. Durable but prone to water damage.
- Engineered wood – Composite wood product that resists warping. Gets a beautiful stained or painted finish.
- Thermofoil – Wood substrate wrapped in durable plastic laminate. Withstands moisture and daily wear-and-tear.
- Metal – Usually powder-coated steel or aluminum. Modern material that holds up to humidity.
Consider moisture levels in your bathroom along with your aesthetic preferences.
Sink Type
There are several sink options for your new vanity:
- Vitreous china – Made of ceramic glazed with porcelain. Durable and easy to clean but can chip if hit hard.
- Solid surface – Acrylic-based blend like Corian®. Seamless look with integral sink bowl. Resists stains but can be scratched.
- Stone – Elegant natural material like granite, marble or travertine. May need periodic sealing. Avoid porous stones.
- Glass – Eye-catching vessel or undermount glass sink. Prone to scratches and needs gentle cleaning.
- Metal – Stainless steel, copper or other metal sinks make a statement. Condensation can be an issue.
Faucet Holes
Check if your vanity top needs holes drilled for the faucet and handles. Common options:
- No holes – For wall-mount or vessel sink faucets
- 1 hole – For single-handle faucet
- 3 holes – For faucet with separate handles
- 8 inches spread – Standard spacing for widespread faucets
Drawers and Storage
Look for a vanity with adequate interior storage to meet your bathroom needs. Features to consider:
- Drawers – Useful for organizing toiletries out of sight. Soft-closing gliders prevent slamming.
- Doors – Offer access to fixed shelves for towels and other items.
- Open shelves – Provide display space in a smaller vanity.
- Pull-out trays – Create storage in otherwise wasted cabinet space under the sink.
Measure the contents that need to be stored and compare to vanity sizes when choosing.
Removing the Old Vanity
After selecting your new vanity, it’s time to remove the old one. Follow these steps:
Turn Off Water Supply
Locate the shut-off valves below the sink and turn them clockwise to turn off the hot and cold water supply. This prevents any water from spurting out when you disconnect the pipes.
Disconnect Drain Pipes
Place a bucket under the trap to catch water. Loosen the slip nuts on both sides of the curved P-trap using pliers or a wrench. Detach the trap from the sink tailpiece and drain arm. You may need to loosen the pop-up drain plug from above first.
Disconnect Fixtures
Unscrew the supply lines from the faucet inlets and shut-off valves. Unscrew and remove the faucet. Plug the sink drain to prevent any parts from falling down the pipe.
Remove Vanity
Take out any remaining screws, brackets or caulk anchoring the vanity to the wall. Carefully lift up and remove the vanity unit. Scrape off any old caulk or putty.
Clean Up Remnants
Use a utility knife to cut away excess putty or caulk left behind. Remove any wall anchors or screws protruding from the wall. Wipe the area clean using a damp rag. Now you have a clean slate for your new vanity.
Preparing the Area
With the old vanity gone, take a few quick steps to ensure the new one will install smoothly:
Assess Plumbing Locations
Verify that the existing plumbing stub-outs from the wall line up with the corresponding locations on your replacement vanity. Adjust if needed before installation.
Make Wall Repairs
Inspect the wall behind the vanity and address any holes, damaged areas or flaws. Repair drywall if needed to give you a smooth surface.
Plumb Sink Drain (Optional)
If you don’t have an existing Oatey PVC solvent sink drain in place, install one now according to the manufacturer instructions. This creates a watertight seal.
Add Support Bracing
Secure 2×4 braces horizontally along the wall studs behind the vanity footprint. This provides a solid base to anchor the vanity to.
Installing the New Vanity
Once prepped, it’s time to put in your beautiful new vanity! Follow these tips for proper installation:
Assemble Cabinet
If your vanity comes in pieces, assemble the cabinet box according to the manufacturer directions. Make sure all joints are tightly screwed, glued, and reinforced.
Position Vanity
Lift the vanity base into place against the wall. Have someone help support the weight if it is large or heavy.
Level and Plumb the Base
Check that the vanity base is level side-to-side and front-to-back. Use shims under the corners if needed to fine tune.
Anchor to Wall
Drill pilot holes through the back rail of the vanity into the wall studs or support braces. Insert lag screws and tighten to firmly secure the base to the wall framing.
Attach Top
Clean the vanity cabinet and sink edge with denatured alcohol. Apply a 1/4″ bead of silicone adhesive caulk along the top of the vanity. Carefully position the countertop and press down firmly.
Install Sink Basin
Turn the top over and apply a ring of silicone sealant around the sink drain opening. Position the sink and press into the adhesive, aligning with the drain hole. Let dry overnight.
Connect Plumbing
Hook up the P-trap, supply lines and shut-off valves using new compression fittings. Make sure any slip joints are oriented correctly.
Install Faucet
Place the faucet through its mounting holes and secure below with the retaining nuts and washers. Connect hot and cold supply lines to the appropriate faucet inlets.
Make Final Adjustments
Turn on the water supply and test for leaks. Caulk along the backsplash and side perimeters with silicone to seal any gaps. Add any needed drawer pulls or hardware.
Installing the Mirror and Lighting
The last step is mounting your mirror and lighting above the new vanity to complete the look:
Hang Mirror
Determine if you want the mirror’s top edge to be even with, slightly higher, or lower than the vanity countertop. Mark a level line on the wall at the desired height. Apply silicone adhesive evenly on the back of the mirror. Press against the wall for 60 seconds. Add spacers below if needed.
Install Light Fixtures
Follow the manufacturer instructions to safely install any overhead light bar, sconces or other fixtures on either side of the mirror. Make sure they are secure and do not pose a fire hazard.
Make Electrical Connections
With the power turned off at the breaker box, connect any hardwired lights using wire nuts and electrical tape. Consult an electrician if you are uncomfortable doing this yourself. Switch the circuit back on to test the lights.
With everything installed properly, your bathroom has a stunning new focal point! Be sure to caulk all edges for water protection and wipe down the vanity with a damp cloth to remove any dust. After admiring your work, organize your toiletries in the vanity drawers and cabinets to complete the renewal. With proper care and cleaning, your vanity and sink can look like new for years of everyday use.
Frequently Asked Questions
Still have some questions? Here are answers to some common queries:
How do I remove the existing sink from the countertop?
Use a utility knife to cut any caulk sealing the sink to the top. Gently pry up the sink from underneath, working around the edge. Be careful not to crack the sink or vanity top.
Can I install the new sink on the existing countertop?
You can if the cutout dimensions match and the countertop is sturdy and level. Make sure to seal the edges with caulk. But replacing the top allows for a complete fresh look.
What is the best way to cut the sink opening in the new countertop?
Use a jigsaw with a fine-toothed blade made for cutting laminates. Clamp a straightedge as a guide for smooth cuts. Always wear safety goggles.
How do I secure the vanity cabinet to the wall?
Screw through the back mounting rail into the wall studs. For added support, apply L-brackets along the top side edges into the wall.
How do I adjust cabinet doors and drawers after installation?
Cabinets usually have built-in adjustment screws on the hinges and slides. Turn these incrementally to tweak alignment and closure.
Should I update my bathroom faucet too?
Yes, a new widespread or single-handle faucet can give your whole bathroom a coordinated, up-to-date look.
What should I use to seal around the vanity?
In bathrooms, a flexible, mildew-resistant silicone caulk is best for filling any cracks and gaps. Avoid latex caulks, which can deteriorate.
How can I give my bathroom a distinct look?
With the right cabinet hardware! Cool knobs, pulls and handles are an easy way to add personality. Seek ones that complement your vanity style.
Conclusion
Installing a fresh vanity provides a relatively easy way to revive your bathroom. By following the steps above, you can do this project yourself over a weekend. Focus your efforts on precise plumbing work for the sink and faucet. The end results will uplift your whole space. With proper care and cleaning, your new vanity will serve you well for years, providing storage and adding style to your bathroom.