Toilet drain rough-in

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Toilet drain rough-in

Post by WillLee » Mon Feb 25, 2019 9:48 pm

Hi Shannon,

I had a plumber come in to rough-in my basement bathroom. The gravel is still present so my next step is to fill with concrete. I had mentioned how I was going to try and install the toilet myself and use a toilet flange but he said that I did not have to. That when you have it in the basement like that, after you concrete around the drain, you can install the toilet without a flange. I was confused. Am I missing something?


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Re: Toilet drain rough-in

Post by Shannon » Mon Feb 25, 2019 10:00 pm

Install a toilet without a flange? I have no idea how?
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A. Spruce
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Re: Toilet drain rough-in

Post by A. Spruce » Tue Feb 26, 2019 10:28 am

That's a new one on me as well. You'd have no sealing surface for the wax ring without a flange. You'd also have nothing to attach the toilet to, you'd have to use espansion anchors to hold the toilet in place.

IMHO, it is better and easier to install a flange.

I would LOVE for that plumber to come explain to us how he installs toilets without a flange, and I'd also love to know if the local building department approves of his methods.
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