I've built barbicue oven which is not really intended to cook pizza but i'm determine to modify it and to improvize the effect of pizza oven as much as possible.
Now, it's made of light concrete blocks on the outside and i've put fire bricks on the inside on all four sides. The dimensions inside are something like 20 x 20 inches and a little more in the height with a classic chimney on top which goes from the right rear side. So, it's not that big but i still got problems when cooking pizza for obvious reason that the front side is too much open and that i probably don't get enough hot air flow on the inside. The temperature is higher as it is closer to the rear wall, and the base bricks gets quite a hot. The problem is that pizza cooks really quick on the bottom and the upper part just can not handle to cook that quick so i m left with unbalanced temperature. I tried several methods:
1. After i move the burning woods, i put pizza on the floor but the upper part is cooking slower. I noticed that if i lay wood coals around the dough it helps a little but the edges of pizza tend to burn quickly that way.
2. I tried to place another brick above the fire and heat it, like a pizza stone. But pizza is cooking even slower on the upper part.
3. I tried to make a "roof" closer to the floor with 2 additional firebricks. I preheat them while the fire is heating the bottom bricks and then place pizza on the bottom of the oven. It is somewhat better but i still got the bottom of pizza cooked in around minute or two but the upper part is nowhere near of finish at that point.
Whatever suggestion you have please shoot! Thank you!