If your toilet has been leaking there is a danger the wooden subfloor will be damaged as a result.
How to fix toilet to floor boards.
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.
Remove the toilet and turn it on its side.
Peel back the flooring around the fixture and you will.
Then make an outline of the toilet on the floor with masking tape.
It goes under the flange and transfers the load of the flange and toilet and you out onto more solid surrounding wood.
You may have to shim up the toilet or use a toilet base slab to prevent rocking.
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How to fix wood that got wet from a leaking 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.
But if your floor is severely rotted say more than an inch beyond the flange you re stuck replacing the flooring around the toilet.
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.
A step by step video of how to repair the floor under your toilet replace it put new flooring and set the toilet etc.
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.
If the flange is set on the subfloor you may need a flange extender.