:-) its called insulbrite, I use warm and natural along with it.
I think it might be to thick for an ironboard pad.
I've gotten mine from different places, Joann's, Hittle, Keepsake quilting.

Hope this helps.

I made pot holders from the batting that has the silver side. So that I would always know which side the silver is on I just put 2 pieces together with the silver side out. The silver side is the heat-resistant side. I got my at a JoAnns equivalent store.

pattern here
http://www.quiltingboard.com/posts/list/15/293.page