flooring sinking around toilet bowl

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Old 01-10-14, 06:29 PM
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flooring sinking around toilet bowl

so we recently bought a home and were told to tighten the screws on the toilet upstairs.we went to tighten the screws and found that the floor is sinking at the back of the toilet. We don't know if it is water leaking and haven't found Any signs of water. does anyone know what I could maybe do to fix this problem? Or any videos that may help me investigate what is wrong?
 
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Old 01-10-14, 07:55 PM
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Most likely a wax ring has been leaking and rotted out the floor.
Going to have to pull the toilet out to check it out.
Any access below the floor?
This is Home Inspector 101 and should have been in the presale report.
 
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Old 01-11-14, 04:25 AM
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Ya, you're going to need to pull the commode, replace the rotten subfloor and wax seal. If you have access underneath, you might be able to postpone replacing the subfloor by installing a 2x between the floor joists to better support the rotten subfloor but you must replace the wax seal! Wax seals only cost $1 or so.

btw - welcome to the forums!
 
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Old 01-11-14, 04:53 AM
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Check the framing. It may not be rotted, but the "plumber" who made the initial install probably cut a joist and did not bridge it. Can you post a picture from under the toilet?
 
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Old 01-11-14, 04:55 AM
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Wax rings are not great at staying sealed when there is movement between the toilet and the flange so changing the ring or doubling is only a very temporary solution. Sani Seal makes a squishy foam ring that can withstand movement better. They are more expensive but still less than $10.

Even with a Sani Seal ring the floor is rotted and will not get better and generally continues to get worse so the floor around the toilet will still need to be repaired. Since you did not mention cracking tile I assume you have a sheet vinyl floor. You may get lucky and be able to pull it back enough to do the repair and save the vinyl.
 
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Old 01-13-14, 10:48 AM
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Just did this project over the summer at my mother's house. She neglected it too long, we had to gut the whole bath as the rot was pretty extensive and traveled under the shower basin. We had crawlspace access which made things a lot easier.

If the rot is not too bad, you can probably salvage all but the flooring, maybe even that too. Like others have said, pull the toilet and go from there based on how advanced the rot is.
 
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