Two clarifying questions by a newbie contemplating a WFO construction.
1. in a 6:1 or 10:1 perlcrete mix, how much water should I use when I mix for a 4" insulating base. I've read that it should ideally be minimized to achieve workability and the cementatious reaction, but you don't want too much that would create steam during the first few firings. For an exterior insulation layer, is the water ratio different?
2. Is the home brew mortar mix used because of superior performance over conventional bagged mixes? (I haven't gone shopping yet so maybe there are no such conventional bagged mixes).