Hi, All,

I am doing a bathroom renovation and just discovered that my toilet rough-in is 14". Home Depot told me a 14" is a special order and none too cheap. So, can I put a standard 12" rough-in model on there, assuming I am OK with the 2" gap behind the tank? Do I have potential to cause other issues, aside from the possible weird-looking gap?

Thanks, Mike

I'm not sure what "none too cheap" equates to, but 14" rough-in toilets are readily available for around $300. Any decent plumbing supply will be able to order 'em for you, and/or Google "14" rough-in toilets".

Check out this link for some other possible alternatives, for example the Toto Uni-fit models link near the bottom of the page. This adapter has 10", 12", and 14" capability.

To answer your original question however, if you are OK with the extra clearance in back of the tank, the 12" will work just fine.

Thanks for the reply and good point on the existing flange, I will check it out to be sure.

Get an offset flange which will offset up to 2 inches and set it so the full 2 inches is at the rear and use a 12 in. RI toilet.

And as Al (CC) says a 12 inch toilet will look okay. I have seen it more than that and thought it would look bad, but when the toilet went in it looked okay.

I recently went through this exercise with a good customer. They elected to have me install a 12" RI toilet, then, they'll create a shelf behind the toilet tank and use the extra 2" for storage.

Bob.

I wish I had read all this last year. We have a bathroom at the back of the garage, and I replaced the window there with a door to allow easy access from yard and spa. There was a 12" Toto elongated at the 14" rough-in. At the home supply I special ordered an American Standard 14" round bowl toilet to get more passage room by the door. To my surprise the new toilet came with a 2" deeper tank on 12" bowl. The gap was filled by the deeper tank and I gained 2" with the round bowl, but not what I expected. I could have had the same gain for $200 less with a regular 12" round (leaving the 2" gap at back).
It looks like I could gain another 2" with either an offset flange (using a regular 12" round) or with the custom Toto.
QUERY: Can an offset flange be used on a concrete floor?