The insulbrite that I have is white with silver tensil looking stuff scattered throughout. I do see you have several other great ideas to use instead.
I have used insul-brite when making water bottle holders. I think it works great and not that expensive, considering you can get quite a few out of a yard and like someone said, use your 40% off coupon at JoAnn's.
Could not get a hold of insulbrite where I live and didn't want to drive down the mountain so I brougt an silver/grey ironing board cover and made a dozen to give away and still had part of the pad cover left over to make more. Did put a layer of towel in also.
Not sure what insulbrite is. But I like that stuff that has the hard silver color on one side. Haven made any potholders in a long time, but I notice you can buy that in JoAnn's the last time I was there. Well, if you have deep pockets you can buy there. I either use my 40% off or go somewhere else.
I think insulbrite will have a different texture than batting, maybe more coarse and stiff? I use old towels in mine and it works fine. Just 2 layers and then the material and bias tape. Hope u get it figured out. Hugs from South Africa.
You know, I think that is such a great idea babsie-a customer of mine had me do up a bunch of potholders for her daughters for Christmas-using handtowels for the inside of the potholder and then she bought packs of fat quarters for the outside of the potholder. She said that was the way her grandmother & grandmother always did theirs (this woman is probably in her late 60's) and they last forever and work just as well as the special insulate fabric.
I keep saying I am going to do some for myself(my potholders are getting pretty nasty looking)-but, you know how that goes, everyone & thing else 1st-my wants later....lol.~linda~
That is what I use for the inside of my potholders, too. I save all my terry towels that are getting thin, using at least 2 layers. nothing is wasted at my house. Being raised during the 50's and 60's, I learned from my Mom. grannieannie