ErikT
Member
I think so too. Rebond doesn't have consistent pattern of chips nor chips in a similar size. I can't think of a rubber waffle pad that would do that either. Best question is what was removed to reveal what we are looking at.
To answer your question the bedroom had carpeting (which i removed) underneath the carpeting it had vinyl flooring? (inexperienced with flooring material but it's like a flimsy tile material like a flimsy cardboard material) and underneath the vinyl it has old wood flooring that revealed the black bean like substance