Fix it the solution for this type of discoloration is to expose it to natural light.
Pink discoloration on vinyl flooring.
Products on the market.
While the material is pink the discoloration to the floor will be yellow.
Pink synthetic polyurethane patching material.
Defining the phenomenon vinyl discoloration can take on a myriad of hues including yellow orange blue and pink.
Pink stain is caused by the growth of microorganisms on the surface of a plasticized vinyl or other polymer.
If it were black gray blue or pink it would indicate mold growth.
It may be the adhesive that was used to adhere the vinyl to the concrete or it could be the result of moisture rising up through the concrete.
Sometimes a leaking toilet can damage floor coverings and underflooring without creating any obvious signs.
Open the curtains and allow as much natural light as possible in the area.
Most of the time discoloration comes from the top down meaning that the buildup or soil from foot traffic is affecting the wear layer of the vinyl and not resisting the results of use.
If the stain is yellow it s probably an adhesive stain.
Sound useless and obscure.
Seen it numerous times.
Often scratching or staining can occur this way.
I have seen this type of discoloration when the flooring is exposed to direct sunlight.
Specifically streptoverticillium reticulum a bacterium often found in soil and rotting vegetation.
Linoleum vinyl flooring pool liners pvc vinyl roofing membranes and any other areas where light colored plastic and polymer materials come into contact with water are also susceptible to the streptoverticillium reticulum pink stain.
If the vinyl flooring can t be replaced right away there are a few tips for removing the stain and increasing the longevity of the vinyl floor.
I have seen it discolor around heat vents and i have seen this same type of discoloration underneath refrigerators usually directly under the compressor.
The discoloration will duplicate the shape of the patch in the underlayment.
Discolored vinyl flooring near or under a toilet is unsightly but it can also indicate a problem such as a leaking toilet.
Not all leaking fixtures leave puddles on the floor.
This will dissipate the yellowing but will take some time perhaps days or even weeks.
According to priddy the primary cause of discoloration is the migration of trace chemicals from adjacent materials laminated to the pvc.
Then you d have to solve a moisture problem before laying your new floor.
I have not seen it occur on the newer vinyl floors though.