I used a layer of the silver teflon fabric first to protect the wood so it wouldn't warp from the heat and the steam. Maybe that's what the insulbrite was for. Then, I used two layers of regular cotton batting and topped it with the silver teflon fabric. Another friend just cut up her old ironing board cover and padding when she replaced it. She put a plain muslin backing on it and just lays it on the tv table instead of tacking it down.