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Install a Toilet Drain Extension

DIY Questions and Answer July 15, 2015 Sonia



Q: We installed a new tile floor in the bathroom, but the toilet drain is now too low for the toilet flange. How can we fix this?

A: The toilet flange seals the toilet to the drain so it needs to be at floor level or slightly above to work properly. You can correct the problem by installing a toilet drain extension. Look for a “closet drain extension kit” that includes polyurethane spacer rings with built-in gaskets. Some kits even include all the necessary hardware for installation (T-bolts, nuts, etc.). The polyurethane rings stack over the opening to extend the drain even with or above the floor tile. You can then add a wax ring on top and mount the toilet.