The materials you use to build your oven determines how long the oven will last. The material of the oven also determines how quickly the oven will heat fast, how long will the heat last, how fast will the heat dissipate, etc. One of the important material for the heat of your oven is the thermal insulation.
This insulation lays on top on the initial internal dome of bricks so as to improve the heat retaining properties of the oven. There are different materials that are used in an insulation. This have a heat resistant and an insulation properties. Mostly, the insulation that are being used is either fire blanket which is a material usually used with industrial ovens, or an insulating mortar which is a mixture of cement and vermiculite or pertite.
my pizza oven dome is made of vermiculite and portland mix. its all done, but I still have to insulate ( 2 inch ceramic fiber blanket) should I start curing the dome NOW before I insulate or go ahead and insulate then 2 coats of stucco, then start the curing ?
Hi Rich. It's fine to finish the build with the insulation and cladding, and then worry about the drying / curing of the oven later. You want the cement mixture to harden / cure as well as possible which just means to keep the mixture wet for as long as possible. If you're worried about moisture wicking from the cement to the insulation before it has hardened entirely you can place a layer of aluminium foil on top of the cement before applying the insulation.