A weep hole is a good idea but it depends on the amount of potential rain you will get in your area, is the oven being enclosed, is there a roof over the oven, etc. Drilling a weep hole in fairly new concrete is easy with the exception of the steel decking which you will need to come in from the bottom. Also it depend on how you will insulate the floor. If you are placing CaSi directly on the hearth then anything you can do to keep water from getting to the CaSi is important since it very water absorbent (we see quite a few wet CaSi floor issues). Some builders raise the CaSi off the hearth with another type of less water absorbent insulation, ie P or Vcrete layer, FoamGlas, patio blocks, hebel.
Nice progress, I am a fan of a integrated arch pour on the base.
Nice progress, I am a fan of a integrated arch pour on the base.
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