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Floating vs. Freestanding Vanities: The Wall Blocking, the Plumbing Height, and the Mop
Bathroom Vanities
Floating or Freestanding: Which Vanity, and What the Wall Has to Say About It
A floating vanity hangs off the wall with air underneath. A freestanding one sits on the floor like a cabinet. The choice looks like a style decision and it is, but the thing that actually decides it in an existing bathroom is what is inside the wall and where the drain comes out, and those are worth knowing before the vanity is ordered, not after.
Side by side
| Floating (wall-hung) | Freestanding | |
|---|---|---|
| Vanity price, 36 in. with top | $900 to $3,500 (prefab to custom) | $600 to $3,000 |
| Install, existing bathroom | $700 to $1,400 (blocking, plumbing at height) | $350 to $900 |
| Install, new bathroom or gutted | About the same as freestanding, if planned | $350 to $900 |
| Storage | One or two drawers; loses the bottom 10 to 14 in. | Full height; a bottom drawer or a door with a shelf |
| Floor cleaning | Mop straight under it | Toe kick collects the dust |
| Look | Room reads bigger; the floor continues | Furniture, traditional, grounded |
| Plumbing | Drain and supplies must exit the wall at vanity height, hidden behind it | Drain can come from the floor or the wall; the cabinet hides it |
| Wall | Blocking required at mounting height; 300 lb load | Screws into any stud |
| Heated floor | Runs under it, warms the room better | Stops at the toe kick |
| Resale | Reads modern; dates a room if the rest is not | Neutral |
The blocking
A floating vanity, with a stone top, a basin of water and someone leaning on it to shave, puts 200 to 300 lb on the fasteners, and the fasteners want to pull out of the wall, not shear down it. Drywall anchors will not hold it; two screws into two studs will hold a narrow one and not a 48 in. one. The right way is a row of 2×6 or 2×8 blocking, or a strip of 3/4 in. plywood, let into the studs across the whole width of the vanity at the mounting height, so the hanging rail or the brackets screw into solid wood from end to end. In a new or gutted bathroom that is a half hour for the framer before the drywall goes on. In an existing bathroom it is the drywall cut out behind the vanity, the blocking installed, the drywall patched and painted, and that is the $300 to $600 that makes the install cost more. The installation cost page has the numbers side by side.
A floating vanity on a tiled wall means the blocking has to be in before the tile. If the wall is already tiled, the choices are: find the studs through the tile and accept a narrower vanity sized to land on two of them, open the tile (and match it), or buy freestanding. There is no fourth option that holds.
The plumbing height
Under a freestanding vanity, the drain can come out of the wall at 16 in. or up through the floor; the cabinet hides it. Under a floating vanity there is nothing to hide anything, so the drain must come out of the wall at about 18 to 22 in. (inside the vanity, above the open space) and the supplies likewise, and the trap has to fit inside the drawer-depth of the vanity. Many bathrooms have the drain exiting the wall at the right height already; some, especially on a slab or in a basement, have it coming through the floor, and moving it is a plumber opening the wall and the floor, $600 to $1,500. The vanity’s drawings show the required rough-in height; the fit checker on the sizes page asks for it.
What you lose and what you gain
Storage. A 36 in. freestanding vanity has about 6 cubic feet of usable space; a floating one at the same height has 3 to 4, because the bottom 10 to 14 in. is air. In an ensuite with a linen closet that is nothing. In a family bathroom where the vanity is the only storage, it is the difference between the towels fitting and not. The small bathroom storage page is partly about getting that space back.
The floor. The reason people who have a floating vanity keep choosing them is the mop goes straight under it. A heated floor runs under it and the room feels warmer. A small bathroom reads larger because the floor is continuous. And a robot vacuum, if that is the household, actually cleans the bathroom.
Height. A floating vanity can be hung at any height, which is how a 34 in. accessible height or a 36 in. kitchen-counter height happens without a custom cabinet. A freestanding vanity is the height it was built, plus whatever the toe kick does.
Five things to check before ordering floating
- Where does the drain come out, and how high? Wall at 18 in. or higher: fine. Floor, or wall below 16 in.: it moves, and that is a plumber and a price.
- Is the wall open, or can it be? Blocking is non-negotiable. Tiled wall with no blocking is the hardest case.
- Is there a stud at each end of the vanity? A 36 in. vanity on 16 in. stud centres spans three studs; a 30 in. one may only catch two, and the brackets need to land on them.
- Is the floor finished under where the vanity goes? Under a freestanding vanity the tile stops at the cabinet; under a floating one it has to run to the wall, and if the old vanity was freestanding there is a stripe of bare subfloor that needs tile.
- Who needs to reach the counter? Set the height for the people in the house. 32 in. for a kids’ bathroom, 34 to 36 for adults, 34 if anyone will ever use a wheelchair there.
Cost, for the whole thing
In a bathroom that is being gutted anyway, floating and freestanding cost about the same installed; the blocking is a few minutes and the rough-in is set wherever the plumber is told. In an existing bathroom where only the vanity is changing, floating costs $300 to $900 more, and up to $1,500 more if the drain moves. The vanity itself is similar either way at each grade, and the vanity calculator has a floating option that adds the right install line. Both come prefab, semi-custom and custom, which is on custom vs. prefab.
Questions people ask
Are floating vanities more expensive?
The cabinet costs about the same. The install costs $300 to $900 more in an existing bathroom because of the wall blocking and, sometimes, moving the drain. In a new bathroom there is no difference.
How much weight can a floating vanity hold?
Properly blocked and screwed into solid wood across its width, several hundred pounds. On drywall anchors, not enough to be safe. The blocking is the whole question.
Can you install a floating vanity on an existing wall?
Yes, if the drywall behind it is opened to add blocking, and the drain exits the wall at vanity height. If the wall is tiled or the drain is in the floor, it is a bigger job.
Do floating vanities have less storage?
Yes, about a third to a half less than a freestanding one of the same width, because the bottom 10 to 14 in. is open. Fine with a linen closet; a problem without one.
What height should a floating vanity be?
Whatever suits the household: 32 to 34 in. to the counter for children or accessible use, 34 to 36 in. for adults. One of the few advantages is that you choose.
The deciding question
Is the wall open, and where does the drain come out? If both answers are the right ones, pick whichever you like the look of. If either is wrong, freestanding is the vanity that costs what the quote says.
