Plumbing tips · October 30, 2026
The toilet that wobbles like a loose tombstone
A toilet that moves when you sit on it, or leaves a puddle at the base, is not sealed to the drain the way it should be.
What holds a toilet down
A toilet sits on a ring of wax that seals it to the drain pipe in the floor, and two bolts hold it to a flange fastened to the floor. When the bolts loosen, the flange breaks or the floor under it gives, the toilet starts to move.
Why rocking breaks the seal
Every time the toilet rocks, the wax ring gets pushed out of shape. After a while it no longer seals, and water from each flush seeps out under the toilet and into the floor, along with sewer gas.
Caulk is not the fix
Caulk around the base can make it look tidy, but it does not stop a leak under the toilet. It can hide the water until the floor or the ceiling below is damaged.
How it gets fixed
The toilet is pulled, the old wax is cleaned off, and the flange is checked for cracks, rust or a height problem. Then it is set on a new ring and bolted down level, so it stays put.
Questions we get asked
Can I just tighten the bolts?
If the toilet only just started to move, snugging the bolts gently can stop it. Tighten too hard and the porcelain can crack. If it has been rocking a while, the ring is likely already broken.How do I know the water is from the base and not the tank?
Dry everything and put a little food coloring in the tank. If colored water shows at the base without flushing, the tank or its bolts are leaking. If water only shows after a flush, it is the seal at the floor.Why is the floor soft around the toilet?
A soft or spongy floor means water has been getting under it for a while. Have the toilet pulled and the subfloor checked before it gets worse.Plumbing questions we answer
Where we go
Parker, Wise and Tarrant County, out of the shop in Springtown. Springtown, Weatherford, Azle, Boyd, Decatur, Newark, Millsap, Fort Worth and the country in between.
Call 817-487-8866