Cost to repair this type of damage will vary greatly depending on the extent of the damage and the type of flooring.
How to fix a rotten floor around the toilet.
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.
In this case the damage was limited to.
A spongy floor around the toilet is a strong indication that the subfloor has absorbed water.
Repair dry rot in the floor around toilet.
If your toilet has been leaking there is a danger the wooden subfloor will be damaged as a result.
If only the area directly below the flange is rotted you can install a two piece steel closet flange support.
It goes under the flange and transfers the load of the flange and toilet and you out onto more solid surrounding wood.
Peel back the flooring around the fixture and you will.
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.
A leaky wax seal or a dripping water supply line can make the area around the toilet wet.
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.
How to cut out rotted wood by a toilet flange.
These leaks and drips may go unnoticed and over time.
How to fix a rotten floor around the toilet.
Because of leaky toilet seals pest inspectors often find dry rot in the subflooring beneath the toilet area.