If you're looking to maximize space and functionality in your bathroom, consider extending your bathroom vanity top over the toilet. This design trend, often referred to as a "floating vanity" or "floating toilet," not only saves space but also creates a sleek, modern look. In this article, we'll delve into the benefits, design considerations, and step-by-step installation guide for this innovative bathroom layout.
Benefits of Extending Bathroom Vanity Top Over Toilet
Before we dive into the details, let's explore the advantages of this space-saving design:
- Space Efficiency: By extending the vanity over the toilet, you eliminate the need for a separate, freestanding vanity, freeing up valuable floor space.
- Streamlined Aesthetic: The continuous line of the vanity top creates a clean, modern look that's highly sought after in contemporary bathroom design.
- Additional Storage: With the vanity top extended over the toilet, you gain extra storage space underneath for toiletries, cleaning supplies, or even a small trash can.
- Easy Cleaning: With no space underneath the vanity, cleaning the floor becomes a breeze. Simply sweep or mop without any obstacles.
Design Considerations
Before you start any installation, consider these design aspects to ensure your extended vanity top looks and functions perfectly:

Vanity Size and Shape
The vanity should be long enough to cover the toilet and provide enough counter space for your needs. Rectangular vanities work best for this layout, but you can also use custom-built or L-shaped vanities to fit your specific bathroom shape.
Toilet Height and Depth
Standard toilets are 14-15 inches high and 28 inches deep. Ensure your vanity top is at least 16 inches deep to cover the toilet and provide ample counter space. Also, consider the height of the vanity top to ensure it's comfortable for users.
Plumbing and Ventilation
You'll need to reroute plumbing lines to accommodate the extended vanity top. Additionally, ensure there's adequate ventilation to prevent moisture buildup and mold growth.

Installing a Bathroom Vanity Top Extended Over Toilet
Now that you've considered the design aspects, let's walk through the installation process:
Materials Needed
- Vanity top
- Vanity base (if not using a freestanding vanity)
- Toilet
- Plumbing supplies (P-traps, supply lines, etc.)
- Ventilation fan (if not already installed)
- Caulk
- Silicone sealant
- Drill and driver bits
- Screws
- Level
- Tape measure
Step-by-Step Installation
| Step | Action |
|---|---|
| 1 | Measure and mark the location for the vanity top, ensuring it's level and centered over the toilet. |
| 2 | Install the vanity base (if using) and secure it to the wall studs using screws. |
| 3 | Position the vanity top onto the base (or directly onto the floor if using a freestanding vanity). Ensure it's level and centered. |
| 4 | Secure the vanity top to the wall studs using screws. Drill pilot holes first to prevent cracking the vanity top. |
| 5 | Reroute the plumbing lines to accommodate the extended vanity top. Install P-traps and supply lines as needed. |
| 6 | Install the toilet, following the manufacturer's instructions. Ensure it's properly sealed to the floor and secured to the wall. |
| 7 | Install a ventilation fan (if not already installed) to prevent moisture buildup. Ensure it's vented to the outside. |
| 8 | Caulk the edges of the vanity top to seal it to the wall and create a clean, finished look. Allow the caulk to dry completely. |
| 9 | Apply silicone sealant around the base of the toilet to create a watertight seal. Allow it to dry completely. |
With these steps completed, you'll have a sleek, modern bathroom with an extended vanity top that maximizes your space and functionality. Enjoy your newly remodeled bathroom!