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 fix toilet to floor boards.
A spongy floor around the toilet is a strong indication that the subfloor has absorbed water.
Remove the toilet and turn it on its side.
If your toilet has been leaking there is a danger the wooden subfloor will be damaged as a result.
If the flange is set on the subfloor you may need a flange extender.
It goes under the flange and transfers the load of the flange and toilet and you out onto more solid surrounding wood.
When you install a toilet on a wood floor you won t encounter any more difficult problems than you would installing one on any other floor covering.
How to fix wood that got wet from a leaking toilet.
Then make an outline of the toilet on the floor with masking tape.
How to fix a rotten floor around the toilet.
Water on the floor around your toilet is never a welcome sight and it means extra trouble if it s been there for a while.
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A step by step video of how to repair the floor under your toilet replace it put new flooring and set the toilet etc.
Measure the depth and width of the gluing edge of the bowl.
You may have to shim up the toilet or use a toilet base slab to prevent rocking.
If only the area directly below the flange is rotted you can install a two piece steel closet flange support.