My house is 4 1 2 years old and has two bathrooms both with linoleum floors on the concrete slab.
Dark spots under vinyl flooring.
Vinyl floors and mold or mildew.
Growing in moist areas and causing a multitude of health problems mold can be a serious problem.
Bottom up staining has become less common over the last 10 years because adhesive formulas have improved.
Vinyl flooring can either be glued to the subfloor or it can float on top of it and either way moisture underneath it causes problems.
The mold and mildew can quickly discolor the vinyl flooring requiring decontamination and replacement for a mold free home.
How to remove moisture from underneath vinyl flooring.
I don t know how they got there.
Sheet vinyl floor discoloration can develop from above the product surface below the product surface or within the product itself.
It is not cleanable.
Now the same thing is happening in the other bathroom around the base of the toilet.
In one bathroom not long after we moved in we noticed a slightly darkening area below the shower door on the floor.
Not all leaking fixtures leave puddles on the floor.
Mold can grow anywhere that moisture has gotten.
The stain won t come up through the old vinyl and discolor the new floor.
Vinyl floor discoloration is a more common occurrence than one might think.
Vinyl floors and adhesive issues.
Mold and mildew grow easily in moist spaces so under vinyl flooring and baseboards is ideal.
This same thing happened to me in my kitchen.
Otherwise the second option is quicker and easier.
Discolored vinyl flooring near or under a toilet is unsightly but it can also indicate a problem such as a leaking toilet.
Nothing was dropped on it and it seems to be under the first layer of the vinyl floor.
Why vinyl floor discoloration.
Besides the old vinyl will make a great underlayment.
Sometimes a leaking toilet can damage floor coverings and underflooring without creating any obvious signs.
I had light blue and cream vinyl i discovered a slow leak and it was going under the vinyl little by little until it started turning dark with mildew.
I live by myself.
One morning i got up and noticed that there are black spots in different areas of my vinyl floor.
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.
With lighter colored material vinyl floor discoloration from both above and below are common.
Over time the area has gotten a bit larger and slightly darker.