Drain Rough-In Height for Floating Vanity??

6 years ago

Has anyone out there installed the Bezier Floating vanity from Restoration Hardware? Our plumber will be completing rough-ins next week, and the vanity has not yet been delivered. We are trying to determine what the sink drain rough-in height should be and it isn't entirely clear from the specs available from RH.

We've tried contacting RH directly, and while they've made efforts to be helpful, they haven't yet been able to provide the necessary info. Thought we'd reach out on here to see if anyone has installed it and could provide us with this information.

RH link for the vanity:

https://www.rhmodern.com/catalog/product/product.jsp?productId=prod10670155&categoryId=cat10530030

RH link for the specs:

https://images.restorationhardware.com/content/catalog/product/pdfs/prod10670155_info.pdf

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snite
Original Author

6 years ago

@Bruce, thank you for the info you provided. RH responded to some of our questions, one of which was whether or not the bottom drawers of the cabinet have cutouts to accommodate plumbing. Their response was that the bottom drawers do not have these cutouts so now I'm even more confused.

I'm having an incredibly hard time understanding how an 18" tall vanity cabinet w/ undermount sinks can also accommodate a p-trap without somehow interrupting the functionality of the bottom drawers.

I did find the specs linked below which includes info for the sinks.

https://images.restorationhardware.com/content/catalog/product/pdfs/prod7492246_info.pdf

The bottom of the sink fixture is at 7 1/8". The vanity cabinet itself is 18 1/8" H. The drawers are 6" H and the cabinet framing is 1.5" thick. What this means is we really only have 3.5" of room from the bottom of the sink fixture to fit a p-trap and avoid hitting the bottom drawers.

This doesn't seem possible to me, but clearly there must be something I'm missing.

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Comments (6)

K P
6 years ago
last modified: 6 years ago
The simple answer is that if your contractor (or more specifically your plumber) has the specs that are in the link you just provided, and assuming you are using the standard 34" counter height shown in the specs, then they should be able to determine what height their rough-ins should be. I'm assuming the same plumber is doing the rough-ins and also installing the fixtures, so they'll know the dimensions of their drains etc., thus, they'll be able to determine from the specs where the rough-ins should be.
Bruce in Northern Virginia
6 years ago
last modified: 6 years ago
First a simple calculation. With 34" counter height it looks like the bottom of the cabinet is about 16" off the floor. You need about 5-6" from the top of the drain pipe to bottom of the P-trap, which puts you at 22" to the top of the pipe in the wall, or about 21.25" on center. Now you need to get more info on the distance from the bottom of the installed sink to the top of the counter so that you can calculate how far it goes down into the cabinet. If the drain fitting on the bottom of the installed sink is at about 23.5-24" or higher, it should work fine at 21.25" on center.

I took a quick measurement of my cheap HD vanity and the bottom of sink is about 25 1/4", and the bottom of the cabinet is 13". My rough-in is at about 18" on center and there is barely enough space to fit the trap above the cabinet bottom. Allowing 6" for the trap would be better than 5".

Bruce
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geoffrey_b
6 years ago
My wife bought a similar vanity, but not from Restoration. I'm an engineer and it pisses me off that the morons who sell these products have no spec's - no on center dimensions, no pictures. It's all stuff from China - that's what you get.

I waited until our vanity was delivered, then I took the measurements.

Maybe the drawers are only 1/2 as deep as the vanity - so they can close, and not interfere with the trap.
snite
Original Author
6 years ago
last modified: 6 years ago
@geoffrey-b Tell me about it! My plumber and I together looked at the specs provided and he felt certain that the bottom drawers must have a cutout to accommodate some plumbing (i.e. tail piece/trap). Naturally, I had to reach out to RH b/c there was no info anywhere regarding the drawers. I was completely caught-off guard when they responded saying there are no cutouts.

They did confirm there is extra space (~7") between the back of the cabinet and the drawers when closed, however, the sink drain is at a greater distance from the back of the cabinet than those 7".

I haven't had a chance to update our plumber on the additional info RH provided, so maybe there is a solution. For example, instead of the p-trap being installed below the sink, maybe the plumbing drains water towards the back of the cabinet and the p-trap is then installed within the 7" of space between the back of the cabinet and drawers?

Not sure if I'm explaining that well, and maybe that's the simple/obvious solution. I'm just not familiar with that kind of setup, nor am I a plumber. It's just very frustrating the lack of information available. The RH website says it fits a standard p-trap/drain, but I'm not sure that's entirely the case in this situation.
geoffrey_b
6 years ago
" It's just very frustrating the lack of information available. The RH website says it fits a standard p-trap/drain, but I'm not sure that's entirely the case in this situation."

There is no such thing as a 'standard' anything. These idiots will tell you anything. IMO you need to wait until the vanity arrives - and then you need to put to partially together - with the countertop and the sink, to figure out what to do.

I keep telling people - doing business with China sucks.

Drain Rough-In Height for Floating Vanity??

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K P

Bruce in Northern Virginia

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Drain Rough-In Height for Floating Vanity??

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