How to Install Double Sink Bathroom Vanity Like a Pro

|

House Toolz Team

A double sink bathroom vanity is a game-changer for bathrooms, combining functionality and style. It’s perfect for shared spaces, providing extra storage and convenience while enhancing the room’s overall aesthetic. Installing a double sink bathroom vanity may seem intimidating, but with this comprehensive guide, you’ll learn how to do it like a pro. By following these steps and tips, you’ll save money and achieve a polished, professional result.

Preparing Your Bathroom Space

Before you install a new double sink vanity, get your bathroom ready. Remove the old vanity, fix the walls and floor, and check the plumbing. A good renovation needs careful planning and a clean space for easy installation.

Plumbing is key in a bathroom renovation. Make sure the plumbing connections are good to avoid leaks. Think about your bathroom’s design and how the new vanity will fit with other fixtures.

Removing Old Vanity

Start by taking out the old vanity. Disconnect the plumbing and lift it out carefully. Be gentle to avoid damaging the walls or floor.

Wall and Floor Preparation

After removing the old vanity, prepare the walls and floor. Patch holes and clean the area for a smooth install. Choose flooring and wall tile that’s easy to install, like large format tile.

Checking Plumbing Connections

Lastly, check the plumbing connections. Look at the water supply lines, drain assembly, and P-trap. With careful preparation, your bathroom renovation will be a success, and you’ll enjoy your new vanity for years.

Positioning and Leveling Your Double Sink Bathroom Vanity

Getting your double sink bathroom vanity right is key for a DIY success. It’s all about making sure your vanity tops are even and stuck to the wall well. This stops any wobbling or moving around. You’ll need a level tool to make sure it’s perfectly flat and straight.

Leveling your vanity is all about the details. You might need to use shims or tweak the legs to get it just right. Once it’s level, you can lock it down to the wall with the right screws and bolts.

Here are some important tips for setting up your double sink vanity:

  • Use a level tool to check the vanity’s position
  • Adjust the vanity’s legs or use shims to achieve the perfect level
  • Secure the vanity to the wall using the appropriate hardware and fasteners
  • Ensure that the vanity tops are even and securely fastened

By carefully positioning and leveling your vanity, you’ll get a great DIY job. Your bathroom will look and work better. Always check the manual for your vanity, and ask for help if you’re not sure about anything.

Navy blue double sink bathroom vanity with gold accents and a marble countertop.
TaskEstimated Cost
Removing an existing sink$148.78 – $354.49
Basic installation labor for a bathroom sink$148.78 – $354.49
Debris disposal$5.67 – $6.45

Tools and Materials Checklist

Having the right tools and materials is crucial for installing your double sink bathroom vanity. Before starting, gather the following:

Essential Tools:

  • Screwdriver (Phillips and flathead)
  • Adjustable wrench
  • Drill and drill bits
  • Level (2-foot or longer)
  • Measuring tape
  • Caulking gun
  • Utility knife
  • Bucket or container for water runoff
  • Stud finder

Materials:

  • Double sink bathroom vanity unit
  • Sinks and faucets
  • Water supply lines (hot and cold)
  • Drain pipes (P-traps and extensions if needed)
  • Silicone caulk (mold-resistant)
  • Mounting brackets and screws
  • Teflon tape (plumber’s tape)
  • Shims (for leveling)
  • Cleaning supplies (for prepping the space)

Organizing these tools and materials beforehand saves time and reduces the risk of interruptions during installation. Choosing the appropriate caulk is essential for a successful installation. For guidance, refer to this Caulk and Caulking Tools Buying Guide.

Step 1: Preparation

Proper preparation is the foundation of a successful installation. Take your time with these critical steps to avoid complications later. If you’re installing a single vanity instead, check out our step-by-step guide on how to install a bathroom vanity for detailed instructions.

1. Measure Your Space

  • Use a measuring tape to measure the width, depth, and height of the designated space for the vanity.
  • Double-check clearances for opening doors or drawers and ensure alignment with existing plumbing.
  • If your bathroom has unique dimensions, consider a custom double sink bathroom vanity.

2. Turn Off Water Supply

  • Locate the water shut-off valves under the existing sink or near the main water supply line.
  • Turn the valves clockwise to stop water flow. Confirm by turning on the faucet; no water should flow.

3. Remove the Old Vanity

  • Disconnect the plumbing by unscrewing the water supply lines and drain pipes. Use a bucket to catch any water spills.
  • Unscrew the mounting brackets or hardware securing the old vanity to the wall.
  • Carefully pull the vanity away from the wall. Inspect for hidden screws or caulking that may need to be cut.

4. Inspect and Prep the Area

  • Look for signs of water damage, mold, or uneven walls and floors. Repair these issues before proceeding.
  • Clean the area thoroughly to ensure a smooth and stable installation for your double sink bathroom vanity. If you discover mold behind the old vanity, it’s crucial to handle it properly. The EPA provides a comprehensive guide on Mold Cleanup in Your Home.

Step 2: Assembling the Vanity

Pre-assembly can streamline the installation process, especially for larger vanities. Follow these detailed instructions:

1. Attach the Sinks and Faucets

  • Follow the manufacturer’s instructions to attach the sinks and faucets to the countertop or vanity base.
  • Apply Teflon tape to threaded connections on the faucet to prevent leaks.
  • Tighten fittings snugly but avoid over-tightening, which can damage the fixtures.

2. Install the Countertop

  • If your double sink bathroom vanity comes with a separate countertop, carefully place it on the base.
  • Secure the countertop using adhesive or screws, depending on the manufacturer’s guidelines. Ensure alignment with the base.

Taking these steps in advance will make positioning and plumbing connections more manageable.

Step 3: Position the Vanity

Positioning is critical to ensure proper alignment with plumbing and aesthetic appeal.

1. Move the Vanity into Place

  • With the help of a second person, carefully lift and position the vanity into the designated space.
  • Ensure the pre-cut openings for plumbing align with the water supply lines and drain pipes.

2. Level the Vanity

  • Place a level on the countertop to check for even placement.
  • If the vanity is uneven, use shims under the legs or base to correct the imbalance. Trim excess shim material once the vanity is level.

Real-Life Scenario:

Your floor has a slight slope, causing one corner of the vanity to tilt. Using shims under that corner will stabilize the vanity and ensure proper drainage.

Step 4: Secure the Vanity

Securing the vanity ensures stability and prevents shifting over time. Follow these steps:

1. Locate Wall Studs

  • Use a stud finder to identify the studs behind the wall where the vanity will be mounted.

2. Drill and Attach

  • Drill pilot holes into the wall studs through the back panel of the vanity.
  • Secure the vanity with mounting brackets or long screws. Ensure the screws are tight but not overly so, which could damage the vanity.

Pro Tip:

If no studs are available, use wall anchors designed for heavy loads to secure the vanity.

Step 5: Connect the Plumbing

Proper plumbing is crucial for a functional double sink bathroom vanity. Understanding the fundamentals of plumbing can be beneficial during installation. Here’s a helpful resource on Plumbing Basics. Here’s a step-by-step guide:

1. Attach Water Supply Lines

  • Connect the hot and cold water supply lines to their respective faucets. Hand-tighten initially, then use a wrench for a snug fit.
  • Double-check for correct placement to avoid cross-connections.

2. Connect the Drain Pipes

  • Attach the P-traps to the sink drains. Ensure the pipes align with the wall-mounted drain outlet.
  • Use washers and tighten the connections securely to prevent leaks.

3. Test for Leaks

  • Turn on the water supply and test both sinks. Check for leaks under the sink and at all connections.

Scenario Example:

You notice a small drip under one faucet. Loosen the connection, reapply Teflon tape, and retighten until the leak stops.

Step 6: Seal and Finish

1. Apply Silicone Caulk

  • Run a bead of silicone caulk around the edges of the countertop, backsplash, and any gaps between the vanity and wall.
  • Smooth the caulk with a damp finger or caulk tool for a neat finish.

2. Clean Up

  • Remove excess caulk with a damp cloth or sponge before it dries.
  • Give the area a final wipe-down to remove dust and fingerprints.

Final Testing and Adjustments

  • Test both sinks for proper drainage and water pressure.
  • Check for stability by gently rocking the vanity. Tighten screws or adjust shims if needed.
  • Ensure all drawers and doors open and close smoothly. Need ideas for maximizing other areas of your home? Check out 510 garage ideas to make the most of your small spaces.
Dark wooden double sink bathroom vanity with curved edges and a marble countertop.

Maintenance Tips

Keep your double sink bathroom vanity in excellent condition with these tips Considering outdoor upgrades as well? Learn about the benefits of a vault toilet for outdoor spaces and how it could complement your property.

  • Clean Regularly: Wipe down surfaces with a non-abrasive cleaner to maintain shine and prevent buildup.
  • Inspect for Leaks: Check under the sink periodically for leaks or loose connections.
  • Prevent Clogs: Use drain strainers and avoid pouring grease or heavy debris down the drains.

FAQs

1. What if my plumbing doesn’t align with the new vanity?

You may need to reroute the plumbing, which involves extending or shortening pipes. If unsure, hire a plumber to avoid mistakes.

2. Can I install the vanity by myself?

Yes, but having a second person can make lifting and positioning easier. For complex plumbing issues, professional assistance is recommended.

3. How do I handle water damage behind the old vanity?

Repair the area thoroughly before installing the new vanity. This may involve patching drywall or replacing damaged flooring.

4. What should I do if the vanity isn’t level?

Use shims to correct unevenness. Check with a level after each adjustment.

5. Are custom vanities worth it?

If your space has unique dimensions or you want a specific design, custom vanities are a worthwhile investment.

2 thoughts on “How to Install Double Sink Bathroom Vanity Like a Pro”

Leave a Comment