I found some very inexpensive ironing board covers that included a thick insulating fabric.For those that live in the USA, I would suggest looking in a 'dollar' store.
Hugs,
Jacqueline

extra layers of regular batting might work.

I took apart a store purchased one and it had an extra thick piece of towel. I've never had a hot hand using these.

I think Insulbright is fairly new to the market. Our mothers didn't have it in their pot holders! As others have said, some sort of thick padding will also work. Good place to use up old towels? In fact, I think my mom used a towel most of the time to get things out of the oven! Let us see what you do!

Hi Bernadette, I live in South Africa and have never bought insulbright but use an old towel inside mine, If the towel is thick one piece will be ok but if it's thin make it double. It works and I have never burnt myself using it. Hugs.

Before insulbright we just used heavy batting like for making quilts.

Use a heavy Cotton batting. Don't use poly batting it can melt with heat.

Hi,I have one of the ironing board underlays its made from 100% polyster,I would use towel, felted wool,anything like that should do the job.

I just bought some heavy duty thermal fleece. I was told it is heat resistance. I am anxious to try it and see what happens. It is much thicker than regular fleece. I bought it at an fabric outlet.

Very good question.
Great answers.

I do not understand its question. But, it stays here, a great hug and pleasure in sees her for here.!
You this very absent. I feel its fault. Kisses in your heart. Dilceia( Brazil)

I have an old blanket.