I've got a warmup kit - although it's electric, my question's more relating to the backer board. I misunderstood the initial instructions and have bought 2 lots of board: 1 layer of plain 6mm insulation board and a 2nd lot of 6mm insulated cement board.
I take it I would still benefit from layering the 2 together (presuming it stops heat from escaping downwards through the subfloor)? If so, I'm wondering how best to lay them...seems a bit OTT to have a layer of adhesive under the initial insulated boards AND more adhesive between the insulated/backer, but I'm not sure so any advice would be appreciated.
I take it I would still benefit from layering the 2 together (presuming it stops heat from escaping downwards through the subfloor)? If so, I'm wondering how best to lay them...seems a bit OTT to have a layer of adhesive under the initial insulated boards AND more adhesive between the insulated/backer, but I'm not sure so any advice would be appreciated.
