Do you know what this is on my laminate floor?
I noticed this on my hallway laminate floor about a week ago. We had this laminate floor installed in April. We have lived in this 2nd floor condo for 15 years and haven't seen anything like this before. Could it have been in the laminate floor before it was installed. There was carpet on the floor before. The pictures are what has appeared just today.
Minnehaha County South Dakota
It appears to be a localized thing that may be due to factors that cannot be examined without being there. I suggest that you need to have a flooring representative or home inspector examine it and look at it while considering many factors.