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 Installing new toilet flange on concrete question
Author: alicenfred (CO)

I have a toilet flange question.New Construction.
I am installing a new toilet flange on a basement bathroom concrete floor. I am also installing new ceramic tile.Do I cut a hole in the tile and install the toilet flange on top of the tile, or do I install the toilet flange on top of the concrete and cut the tile around it?
Also what is the best way to anchor down the flange to the concrete? I have been told tapcon screws work best? Thanks

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 Re: Installing new toilet flange on concrete question
Author: dlh (TX)

you can install the flange before tile if you want but you need to shim it using shims the same thickness as the tile since the bottom of the flange ring should sit on top of the tile.

stainless steel screws would be your best bet to anchor it to the floor and 100% brass screws for the toilet bolts to avoid them rusting and being difficult to remove when and if needed

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 Re: Installing new toilet flange on concrete question
Author: packy (MA)

flange ontop of tile. drill holes and use tapcons to secure it.
use a flange with a stainless steel ring.

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 Re: Installing new toilet flange on concrete question
Author: alicenfred (CO)

What does the stainless steel ring do?

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 Re: Installing new toilet flange on concrete question
Author: packy (MA)

the stainless steel ring has slots for holding the toilet bolts and has holes for securing the flange to the floor...

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 Re: Installing new toilet flange on concrete question
Author: alicenfred (CO)

I already have a black abs flange, it also has slots for the bolts and holes to fasten it down. Is this ok?
Also, how long should the tapcons be, or how far into the concrete do they need to go? Thanks

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 Re: Installing new toilet flange on concrete question
Author: North Carolina Plumber (NC)

The one pictured is much better than the one you have, I would exchange it. I'd go with 1 3/4" tapcons, that'll get you thru the flange, tile, and into the concrete at least an inch.

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 Re: Installing new toilet flange on concrete question
Author: packy (MA)

the problem with the plastic ringed flange is that the plastic can bend enough that the bolts can come loose from the slots.

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 Re: Installing new toilet flange on concrete question
Author: alicenfred (CO)

Thanks for the info everyone! I will exchange my flange for the stainless steel one.

Merry Christmas!!

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 Re: Installing new toilet flange on concrete question
Author: alicenfred (CO)

I went to home depot to purchase a new stainless steel toilet flange and the guy there told me that my pipe that the toilet flange goes into is to small. The inside diameter of the pipe is 3". He said it would get plugged up. Is this true? The pipe was installed when my house was built in 2001 and I told the plumber that I wanted the plumbing for a half bath roughed in so I could add a bathroom later on.
They make a toilet flange that is 3" that will fit in the pipe. I just don't understand. Why would they make a flange that small if it was going to plug up?

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 Re: Installing new toilet flange on concrete question
Author: CasualJoe (MO)

There is a reason the guy works at Home Depot and not in the plumbing trade. I have also run into many sales people at Home Depot and Lowes who don't know the trades or the products they are supposed to be selling.

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