Mold or mildew spots under laminate floor. Concerns?

[Jay C.]

Hi all,

Just got a house with in the Dallas/Fort Worth area this last week. After removing the laminate floors, and the laminate padding that looks like carpet padding called 'quiet walk', the concrete has black spots that look like mold or mildew throughout the concrete.

Is this something that can be treated with bleach and water solution? Is this a normal thing with moisture trapped under the laminate padding?

How can I see if it's mold or mildew?

Thank you

[Ryan Short]

@Jackson Chang don’t worry to much about the concrete having mold. Concrete can’t not support mold growth at all. If anything it is surface mold coming off of the laminate flooring. Which means you can just spray and clean it with a anti microbial mold killer. I was suggest replacing the laminate and or carpet that has mold or water damage. If you send some pictures I can evaluate further if you would like. I own a water/fire/mold damage company.