chatelot16 wrote:polyurethane foam is better insulation than glass wool!
Polyurethane 100mm are well worth 250mm of glass wool
the performance of the polyurethane foam between 2 toles is safe and durable: which is not the case for glass wool that has aged more or less well ...
This is the idea that I had, and as the epoxy, little toxic once cured, if not treated anti-fire PentaBDE, which is the case since it is forbidden now (replaced by boron salt I think)
The rest is made in organic, wherever possible, but for the roof, 600m2 is redibitoire considering the costs of the MO and the lack of organic equivalent to this sandwich Iron / PU / Iron