Recap from a prior thread---
Well, after 1 hour, got floor (40") up to 600 near coal beds and was 350 in coolest areas near opening. Then heard a boom and a fist sized chunk of the floor popped out!!! Disappointed as I did 3 days of prior warming fires as the oven hasn't been used in over 14 months. Plus, with this house I bought last July, the contractor they used for many things was awful...
Update---
The broken floor was a 4/quadrant tile floor of refractory concrete with wet insulation underneath. I suspect it was wet from a prior leak I fixed 6 months ago and the oven hadn't been used in over 16 months.
The new floor is 1.5" fire brick and the mason, who has been building brick ovens for 20 years as a 3rd generation mason, felt very strongly about not using insulation under the new floor. The new fire bricks are set on top of 5" concrete over the hearth/receptacle which holds the firewood. I had some reservations re not adding insulation under the firebrick floor, but the mason was adamant. Did I make a mistake here? If so, how important is the insulation under the floor?
Thanks
Well, after 1 hour, got floor (40") up to 600 near coal beds and was 350 in coolest areas near opening. Then heard a boom and a fist sized chunk of the floor popped out!!! Disappointed as I did 3 days of prior warming fires as the oven hasn't been used in over 14 months. Plus, with this house I bought last July, the contractor they used for many things was awful...
Update---
The broken floor was a 4/quadrant tile floor of refractory concrete with wet insulation underneath. I suspect it was wet from a prior leak I fixed 6 months ago and the oven hadn't been used in over 16 months.
The new floor is 1.5" fire brick and the mason, who has been building brick ovens for 20 years as a 3rd generation mason, felt very strongly about not using insulation under the new floor. The new fire bricks are set on top of 5" concrete over the hearth/receptacle which holds the firewood. I had some reservations re not adding insulation under the firebrick floor, but the mason was adamant. Did I make a mistake here? If so, how important is the insulation under the floor?
Thanks
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