I am installing bamboo 5/8" hardwood over sun touch heated floor mats in bath room and in hall is also the bamboo hardwood. how do I transition to over come the height of the heated mats? Thanks,

You'll need a threshold piece to bridge the gap between the two floors and to cover the height difference. While it is possible that a stock threshold piece will work, it could come down to making a custom one. Easy enough if you have at able saw. Not so easy if you don't.