As my dad is living out his last years, we moved him into a spare bedroom in my house. Given his age, sometimes he is unable to control his bodily functions. This bedroom has never been a high traffic area and was built with real 2.25 x .75 white oak wood flooring. The oak was natural (unstained) and still has its original Minwax oil-based polyurethane finish from 20 years ago. I have wanted to temporarily protect the floor with something like one solid piece of 6' x 9' vinyl flooring in the bed area while dad is there. But sometimes I have seen products like this can soften the polyurethane and stick to it, basically ruining the poly finish . Any material suggestions, possibly something under the vinyl, that would would protect the wood and finish, even after a couple of years ??