Originally Posted by
wireb
Thanks for the links. Bummer they only stock the 1" thickness. But the comment about coating the fibers to make them stiff got me thinking. I have a tub of 2700deg refractory adhesive (for sealing metal flue pipes to brick) that can be applied up to 1/8" thick per the label. I am going to try and coat the inside of the firebox with this and see how it works. This stuff has a bunch of course material in it and fiber reinforcement so hopping will will work for the indirect flames off the burner in this little boiler.