Q: Can I lay lino flooring in my bathroom over laminate underlay instead of using hardboard?
A: Laminate is a floating floor. Regardless of the style of laminate (older glue-together vs newer click-together) these floors are not directly anchored to the subfloor. This means they move and will NOT make a suitable subfloor for flooring like linoleum. Linoleum, vinyl tile and similar products need a good solid surface to adhere to and movement in the subfloor (which laminate would have) will cause all sorts of peeling, unsightly areas and more potential problems. You’re going to want to remove the laminate then install your new Linoleum.
