Toilet - sealing flange to slab

Jul 15, 2005 3 Replies

Do toilet flanges have to be sealed to the slab? Does the flange have to be sealed to the sewer pipe? Can mould get under the linoleum from other than the wax seal?


The flange has to be mechanically attached. A 'seal' (as in watertight) is not necessary.

Yes.

Not likely.

Abe

The average bathroom has plenty of other moisture sources besides the toilet.

What about a high water table? What about a broken drain pipe and a downstream pluggage? Seems like either could give infiltration of sewage water. Also seems that either could be prevented by sealing the flange to the slab.

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