Hello,

My vinyl flooring is turning black near my toilet......I kind of did the jump test to see if water was leaking and making the floor soft but it is hard and we looked from below (we have no ceilings downstairs) and see nothing unusual on the wood. I had a plumber out awhile back before this happened for a different suspected leak and he took the toilet off and actually put on two wax rings and stuck it back on so I wouldn't think it would be leaking.....do you think this is leaking or do you think condensation from the toilet is running under there and getting under the vinyl and causing mold? I don't have the toilet caulked to the floor at all.

And do I have to rip up everything and start over?

Thanks,
Michelle