toilet flange on concrete floor

Old 05-01-18, 11:29 PM
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toilet flange on concrete floor

I have this bathroom floor with a flange that has a lot of space around it, I guess that was instead of cementing it into the floor, solid. I'm wondering if I should be pouring in some cement to fill it in?
I intend to glue sheet vinyl and was wondering how to seal its supposed to be sealed off properly in case any water were to leak. I heard plumbers like to have the wax ring seal over top of the sheet vinyl so water could get in under the glue?

I have attached a picture to show how it looks here:
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Last edited by ray2047; 05-02-18 at 12:48 AM. Reason: Add Image
Old 05-02-18, 03:25 AM
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As long as the pipe is solid, you don't need to do anything. But filling the space will do no harm. I would use thinset. Your flooring does not need to be that close to the flange. If it's within a half inch that's pretty good. The wax ring seals on the flange and has no bearing on the flooring. This is a concrete pad, so any leak from a faulty wax ring won't do any permanent damage. I would not use any silicone around the toilet base just for the fact that if you do get a leak it will be visible before any damage takes place.

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