herring bone floor is finished
We mixed up fireclay and applied it to the new hearth with a notched trowel. We were going to apply a layer of foil over the clay to create a moisture barrier between the hearth and the iso board, but it had rained the night before and the iso board was soaked (and heavy). We opted out of the foil and placed the board on the clay. The board became very stable.
As the board was wet we decided to try the notched trowel and clay on the isoboard. This did not work at all.... The wet Iso board still sucked enough of the water out of the clay that the firebrick would not press down - even with some hammer taps.... We scraped all the clay off the isoboard and put down dry clay. My brother in law and sister did a nice job on the herringbone floor while I cut bricks and continued to mock up the dome.
This is where we ran into some of the same problems that Dave talked about when he built his Oven. Huge gaps all over the place. It looked much better during our trial assembly on the driveway. At the end of the head scratching, we adjusted the diameter of the dome 1/2 inch and things started to line up rather nicely.
As expected from Dave's advice (but still not totally understood why), the bottom row needed to tilt in a bit and there was a gap most pronunced with the half hexagons. Instead of trimming the pieces to fit, we added a little bit of extra mortar to one end of the first row of half bricks.
Clamps - lots of clamps came in handy. Orange slices in the beer and wine were optional, but Ibuprohen was mandatory at this stage.
Christo
We mixed up fireclay and applied it to the new hearth with a notched trowel. We were going to apply a layer of foil over the clay to create a moisture barrier between the hearth and the iso board, but it had rained the night before and the iso board was soaked (and heavy). We opted out of the foil and placed the board on the clay. The board became very stable.
As the board was wet we decided to try the notched trowel and clay on the isoboard. This did not work at all.... The wet Iso board still sucked enough of the water out of the clay that the firebrick would not press down - even with some hammer taps.... We scraped all the clay off the isoboard and put down dry clay. My brother in law and sister did a nice job on the herringbone floor while I cut bricks and continued to mock up the dome.
This is where we ran into some of the same problems that Dave talked about when he built his Oven. Huge gaps all over the place. It looked much better during our trial assembly on the driveway. At the end of the head scratching, we adjusted the diameter of the dome 1/2 inch and things started to line up rather nicely.
As expected from Dave's advice (but still not totally understood why), the bottom row needed to tilt in a bit and there was a gap most pronunced with the half hexagons. Instead of trimming the pieces to fit, we added a little bit of extra mortar to one end of the first row of half bricks.
Clamps - lots of clamps came in handy. Orange slices in the beer and wine were optional, but Ibuprohen was mandatory at this stage.
Christo
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