If the back of the toilet is touching the wall the the bowl will never mount flush with the wax ring.
Toilet ring seal leaking.
This is sometimes caused by a toilet that is loose or it can be the result of a wax ring that has grown old and is no longer pliable enough to provide a good seal.
The wobbling has compressed the wax ring intended to seal the toilet to the waste pipe permitting sewer gases to enter the building at the toilet base and risking leaks of sewage and water into the structure.
Short of hiring a plumber to raise the flange there are products like this that allow you to raise the flange and still follow building codes.
By far the most common reason for a broken seal is a toilet that rocks when you sit on it.
When the thick wax ring goes bad you need to replace it right away to prevent leaks.
Your toilet s wax ring creates an airtight seal to prevent water and sewer gas from escaping.
If the toilet installer caulked around the toilet though water might not be visible on the floor.
If your toilet rocks enough for one side of the base to lift off the floor you may have a broken toilet anchor flange.
Take a measurement from the 2 bolt holes to the wall if it is less than 12 then the flange is too close to the wall.
We have even found termite damage and rot at floors where loose toilets went un repaired for too long.
I would recommend against using 2 wax rings due to the increased possibility of leaks.
The first clue that a wax ring is failing is often the presence of water on the floor around the base of the toilet due to the toilet ring seal leaking.
Water condensing on the toilet might be dripping down and puddling around the base of the toilet.
As a precaution pick up a flange repair kit along with your toilet seal ring.
The wax ring acts as a seal between the toilet and the floor to ensure that dirty water doesn t seep onto the floor of your bathroom.
Frequently a toilet leaks simply because the wax ring has lost its seal.
If your toilet is leaking where it contacts the floor there is a good chance the wax ring is bad.
You will need to replace it.
The wax ring that seals the toilet to the drain may be faulty.
A toilet that rocks even slightly will eventually compromise the wax ring.
In some cases a damaged wax ring could be the cause of toilet leaks.
Replacing a sheet vinyl floor with something thicker such as ceramic tile can create a gap between the toilet and the toilet anchor flange.