Can You Double a Wax Ring

Do not be tempted to stack up two wax rings because this setup tends to leak. Installing a flange extender or using an extra-thick wax ring will work much better in the long run. Place the wax ring on the closet flange, not on the toilet.

Is it OK to use 2 wax rings for toilet?

You can certainly install a toilet with multiple wax rings, in fact sometimes it is necessary to make sure you don’t have a leak. … The most important part is that you should feel resistance as the wax rings fill the void between the underside of the bowl to the top of the toilet flange in the floor.

Do I need an extra-thick wax ring?

If it’s at the same level, or no more than 1/4 inch below it, a regular wax ring, which is between 3/4 and 1 inch thick, is all you need. If the flange is recessed deeper than that, you need an extra-thick wax ring, which is about an inch thicker than a regular one.