The tandoor oven has a vertical chamber, so it is worth drawing out the layer layout before purchasing materials. You need to consider the hot inner surface, support, air intake, and outer casing. A ready-made chamber from the manufacturer and a self-built structure require their own assembly details.
Determine the chamber construction and connections
If you are using a prefabricated chamber, check its installation instructions and required clearances. For a masonry design, select Vitcas firebrick for the specific application. Do not replace the ready-made chamber documentation by assuming that each brick layer will behave the same way.
Mark working openings, air supply, and elements that are to be removable. The structural material should not accidentally block the required flow path. The surfaces in contact with baked food are determined by their confirmed purpose, not by the catalogue temperature alone.
Mortar and insulation perform different tasks
Outdoor Oven Cement is described for compatible exterior refractory construction, also for tandoor ovens. Choose it for the joints intended for this mortar. Check joint thickness and substrate preparation before starting masonry.
ceramic fibre blanket can serve as external insulation for a compatible chamber system. It requires appropriate fixing and enclosure. Do not treat it as an exposed baking surface or a material bearing the weight of the entire oven.
Add weather conditions and operation to the design
Plan water drainage, opening protection, and off-season storage conditions. Leave access for cleaning and inspection of components that will wear out during use. The cover must not obstruct functions needed during operation.
Before the first firing, meet the setting, drying, and startup requirements for all materials used. Determine them for the actual thickness and construction, rather than copying the schedule from another oven. Keep drawings and product identification; this will facilitate later repair of the chamber or insulation.