PERFECTLY HAPPY FOR 30 yrs. BUT NOW tiny brown spots are appearing coming from behind the wilsonart laminate, applied on bathroom walls. It is starting high up on the walls, seams are sealed fine, so not sure how steam dampness could get behind it & it's all over! So...think perhaps steam? with bacteria or chemical in glue is causing it due to age! I am quite sure there is nothing that could be done...but interested in any thoughts.)