I was interested in SableSprings's comment about placing a waterproof barrier on top of concrete then adding insulation board. I have a 6" reinforced concrete hearth and I'm about to start cutting bricks. I intent placing 50mm approx 2" of CaSi board on top of the concrete with weep holes. I intend laying the oven floor on the brick edge for additional insulation ie 4.5" will be the brick height.
Given that this build is in Ireland I am concerned about having sufficient insulation.
Questions
1. Is this sufficient insulation?
2. Should I have 2" of cement/vermiculite and place the insulation board on top of that?
3. Does anyone have photos of the tile layer suggested to go between the concrete and insulation as a water barrier. I have some unused quarry stone tiles that were originally intended to cover an external step would they be suitable?
Thanks in anticipation of much needed advice!
Given that this build is in Ireland I am concerned about having sufficient insulation.
Questions
1. Is this sufficient insulation?
2. Should I have 2" of cement/vermiculite and place the insulation board on top of that?
3. Does anyone have photos of the tile layer suggested to go between the concrete and insulation as a water barrier. I have some unused quarry stone tiles that were originally intended to cover an external step would they be suitable?
Thanks in anticipation of much needed advice!
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