[Grundsau]

Thanks. The ITC was not applied yet in that photo. I was firing the burners off and on for the wool to take a set.
Btw, I wear a respirator when using the raw wool.

I did one coat of ITC later on but am going to touch-up a few spots that didn't get coated.
Not sure if it needs another application though.

edited to add:

Here is what Jay sent me:
Fire the forge a couple times before coating the refractory with ITC-100. Mix the ITC-100 two parts coating with one part water and mix to a uniform consistency. Before coating the fiber with ITC-100 use a spray bottle to mist the surface of the fiber with clean water. Dip the brush in water and wring it out. Then brush on a thin coating. Apply a second coat if necessary. Coat the entire inside of the forge and any exposed areas. Let the coating dry over night for best results.

If you want all of his instructions I can PM it to you.