Insulating the Oven
Insulating your oven is really important, but also really easy to do. I learnt from previous ovens and this time used proper ceramic fibre blanket. This is excellent stuff and really holds the heat in. To give you an example how good it is, one time when I was using the oven I measured the temperature of the internal roof of the oven and it was 800F. But on the outside you could touch the roof and not feel any heat at all. As you can see from the pictures below it is very easy to mold around the oven.
Once I had covered the whole oven, I put on another layer for extra measures.
We are now ready for the protection layer.