A spongy floor around the toilet is a strong indication that the subfloor has absorbed water.
How to fix a rotten floor around the toilet.
If only the area directly below the flange is rotted you can install a two piece steel closet flange support.
These leaks and drips may go unnoticed and over time.
Unless the toilet leaked for a long time the joists are probably not completely rotten and sistering a piece of 2 by 8 inch lumber by screwing it to a rotted joist is usually enough to repair it.
In this case the damage was limited to.
Cost to repair this type of damage will vary greatly depending on the extent of the damage and the type of flooring.
The process to repair the subfloor is not easy but it needs to be handled promptly to avoid further damage to the wooden floor below which could eventually result in the toilet falling through.
But if your floor is severely rotted say more than an inch beyond the flange you re stuck replacing the flooring around the toilet.
If your toilet has been leaking there is a danger the wooden subfloor will be damaged as a result.
Repair dry rot in the floor around toilet.
A leaky wax seal or a dripping water supply line can make the area around the toilet wet.
Stepping through the floor was not the first hint that it had rotted out but it sure moved the floor repair up on the priority list for a house with plenty of remodel projects to do.
Because of leaky toilet seals pest inspectors often find dry rot in the subflooring beneath the toilet area.
Peel back the flooring around the fixture and you will.
How to cut out rotted wood by a toilet flange.
Other clues about the floor damage included discolored flooring mold along the wall and lots of opportunity for water leaks with washer toilet and water heater.