 Re: losing heat fast on the floor...
Yes, this sounds like the "Oops no insulation" Or "someone told us that sand/pea gravel/broken glass is the traditional insulator for wood fired ovens" post. I hope I'm wrong.
If I'm not, there is not an easy fix. You can try to affix insulation to the bottom of the support slab (which if I'm right will be getting very hot) but this is a marginal improvement at best.
Let us know details. With any luck it's just a problem of not building a big/long/hot enough fire. Does your dome fire completely white? |