 Re: Another Cracked Dome
Jim
Your repair approach makes good sense. I do think you should wait a bit though. The crack is through a brick which means the dome wants to "expand" in that area and as XJim noticed it has to do with the head joints or "perpendicular" joints lining up or being very close. When bricks or blocks are "stacked" rather than "bonded" each stack is essentially a wall in itself. One of the stacks, or an individual brick in one of those stacks, that are below the cracked brick must be expanding slightly different than the other. This is levering against the one on the top and made it crack. If you wait a bit you may find the crack will stabilize with time and the continued heating and cooling and then it would be a good time to repair as you stated. If you do it too soon, a similar crack may occur further up which would place it in the top 3 rings of your oven(you see that there is a head joint directly above the crack also).
I hope this helps some!
Sorry about the crack!
Dutch
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