I believe products in this category are designed to replace the use of wax rings only although fernco advertises that it can handle toilet flanges that are up to 3 4 lower than the floor surface.
Toilet flange below floor.
Toilet flange before you purchase the new part identify the specific type you have.
Wax ring this secures the flange to the base of the toilet.
In a typical toilet installation the floor flange that sits inside the drain opening below the toilet should be positioned so that its bottom surface rests flush against the finished floor or no more than 1 4 inch above or below the floor this ensures that the flange makes a watertight seal against the wax ring that fits between the drain opening and drain outlet horn on the underside of.
The higher a flange sits above the floor the greater the likelihood of poor fitting and problems with the toilet leaking.
Toilet flange bolts have new bolts on hand in case your existing parts are stripped or rusty.
Press a new wax ring tight to the flange.
Toilet flange extenders are constructed with either soft or hard pvc providing solid pathway from the bowl horn to the toilet flange on the floor.
Most extenders come with long bolts which may be necessary if the flange is below the floor level.
If your flange sits even or below the floor then it s wrong.
Flange extenders are commonly sold in 1 4 inch and 1 2 inch sizes to raise the height of the existing flange 1 4 or 1 2 inch.
Here you can see the results of a toilet having been installed on a toilet flange that is below the floor level.
A sign that the wax ring was not sealing the toilet from sewer gases or preventing water escaping from under the base of the toilet.
Below the toilet you ll see the flange which should also be secured with bolts or similar hardware.
When the toilet was removed the toilet wax ring was still in its original shape.
If the height of your flange needs to be adjusted remove the bolts and flange so that repairs can be made and the flange height adjusted.
Bring it to a local home depot store for help determining if you need a pvc copper iron or aluminum replacement toilet flange.
Use a ratchet wrench to tighten the four stainless steel screws that secure the flange to the floor.
It has to sit evenly on top of the finished floor.
The reason being is because the toilet recesses into the flange when fully installed but when the flange sits even or below the floor the toilet can t properly recess into the flange.
Out with the old.
To get the necessary clearance from the floor you can add a toilet flange extender which is quick and easy to install.
Insert two new closet bolts into the slots in the closet flange.
Here s a video on how to install a toilet flange on tile floor.
This is very important.