Flooring Replacement

Gary, I work as a flooring specialist for a Michigan retailer. If you want a vinyl plank floor that will withstand temperature extremes (below 50 degrees or above 100 degrees), you should make sure that it is a rigid-core vinyl product made for such use. We have had issues with people having joint failures on their vinyl (and laminate) floors in unheated or un-airconditioned homes because most are not designed to for such temperature & humidity fluctuations. I agree a floating floor is necessary - but not just any floor. Products such as Adura Max Prime or Coretec Pro Plus are the type you should seriously consider (they are rated from minus 20 degrees up to 140 degrees). I don't know what they have in the big box stores, they may have their own lines, but I would hate for you to waste your money on the wrong flooring. Maybe where you live & travel in more moderate climates, but here in Michigan we see huge weather changes very frequently. This is my best attempt to help you from someone who sells a lot of these floors.