Cork Underlayment.

[loubob]

Hello. I would like to know the proper way to install cork underlayment in a bathroom located in a high-rise condo. Per code the tile flooring must go under the toilet flange.
So is it acceptable to bring the cork right up to the toilet pipe? Should a moisture barrier be used under the cork underlayment? Wouldn't a leak at the flange go under the cork and be unnoticed, growing mold perhaps?

Using 1/4" cork underlayment with approved adhesive and laying tile over. Removing cast iron toilet flange and replacing with PVC, 4" that fits inside cast iron pipe.

Let me know your thoughts.
Thanks,

Luis

[Jerry Peck - Codeman]

[loubob]

The existing tile was very thin, and when you add the cork underlay and thicker tile for the new installation, the existing flange would be considered too low?

The existing flange is in good condition, but is not secured to the floor.

There is a gap between the pipe and the concrete floor. Place a filler rod down low and fill with reinforced concrete so that anchors can be attached to hold the flange?

Replace existing cast iron flange with Oatey 43538 ABS Cast Iron Flange Replacement, 4-Inch

Oatey 43538 ABS Cast Iron Flange Replacement, 4-Inch.jpg


Advise appreciated.

Thanks

Luis

[Jerry Peck - Codeman]