Wood Fired Bread Oven

What you `re looking for is called refractory mortar. Just searching.

quickrete

its already mixed, just add water and mix

is a bit tricky

ordinary bricks should work

You should get a mortar which does not break when heat is applied. I mean, Portland cement, but I'm sure there are additives you can add to the mortar that are resistant to heat and cracking. Regarding the bricks, use the thicker bricks "you can find. They are yellow and can be found in any good home store or lumber yard. Maybe ask someone who has an oven, for the manufacture of ceramics, or otherwise. Whatever the brick and mortar are used in a furnace at night what you want ...

Vote for William V. He's right.

Refractory mortar is the only thing that will heat and the last without disintegrating or cracking and spalling. It also bears the name of "fireclay".

It consists of very fine, specialty clays mixed with a resin soluble in water, comes in a resealable plastic pail. Never store where it freezes. Keep tightly closed when not in use, and rinse your tools with water after you've finished using it, otherwise it will be impossible to get your tools after it has hardened. Its suitable for indoor use only. If you want to use something outside, it is an expensive powder refractory cement bags will not erode in the rain, but do not confuse it with cheap regular mortar mixes.