My old board had warm and natural plus fabric on it. Eventually it needed replaced. In the meantime I had read that insul-brite reflects the heat back up and improves ironing so when I replaced the covers, I added insul-brite and could really tell the difference in pressing. So I will use the insul-brite but will skip any extra batting. I thought I read something about adding aluminum foil but maybe I was mistaken. So I'll skip that. thanks!