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Old 03-22-2018, 05:27 PM   #1
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toilet flange placement


I'm remodeling a bathroom and replacing 3/4" hardwood floors with cement backerboard and tile.

My question is how to mount the toilet flange. Does it go above the tile or is it recessed (at the subfloor level)?

Seems like the latter would make it too low for the toilet attachment bolts.

Thanks
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Old 03-22-2018, 05:33 PM   #2
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Re: toilet flange placement


Quote:
Originally Posted by rutledj View Post
I'm remodeling a bathroom
and replacing 3/4" hardwood floors with cement backerboard and tile.
1) Why?
2) I hope you're putting something else under that board and tile.

Quote:
My question is how to mount the toilet flange.
Does it go above the tile or is it recessed (at the subfloor level)?
Above pictures
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Old 03-22-2018, 05:38 PM   #3
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Re: toilet flange placement


If you recess it, how can the seal work? Look at the pics from Tarheel.
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Old 03-22-2018, 06:02 PM   #4
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Re: toilet flange placement


It can/will work sitting either flush or on top of the finished floor.

You will likely have to use the thick wax ring, or double wax rings, if the flange is sitting flush with the finished floor.

Often the flange is set before the finshed floor is installed, and I believe that is why we see it often set flush to the finished floor.

Other things being equal, I set the flange on top of the finished floor and prefer a single wax ring.

In my thinking, which means it may or not be correct, it seems to me that double wax rings can 1) possibly the wax can squish into the flange to some degree and 2) with a higher build to the wax seal, any heavy duty plunging might create a leak in the wax seal.

But, I've really never had a problem with either technique... but I'm not a plumber and a GC.... so maybe one of our plumbers will give their experience with alot more toilets than I've experienced.
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Old 03-22-2018, 07:06 PM   #5
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Re: toilet flange placement


The flange height depends on how much you want to crush the wax seal. There doesn't seem to be any standard I know of for the bottom of toilets but in general there will be about a half inch to nine sixteenths recess. So in this instance a 1" wax ring will be crushed about seven sixteenths to a half inch with the flange set flush with finished floor. If you wanna squeeze the hell outta that little feller set the flange on top of finished floor.
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Old 03-22-2018, 08:16 PM   #6
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Re: toilet flange placement


Thanks for the pics fellow Tarheel. They show both flush mount and top mount but I get the impression that top mount is the best. Second question, what is your thoughts on the waxless seals?

https://www.amazon.com/Next-Danco-Pe...ss+toilet+seal


https://www.amazon.com/dp/B000BVMZUG...v_ov_lig_dp_it
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Old 03-23-2018, 06:26 AM   #7
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Re: toilet flange placement


I haven't tried a waxless seal yet. They look good. Try it & let us know.
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