December 28, 20223 yr So, the contractor is willing to use cellulose-based insulation instead of rock-wool for the blow-in insulation of the combles perdus (the low-height end bits of the attic). 1. Does this product look all right? It's what the contractor proposes. https://www.soprema.fr/fr/product/isolation/toiture/toiture-en-pente/combles-perdus/univercell 2. The contractor and the architect assure me that I can view this as an investment, in that it won't be lost even if I raise the roof (provided I raise it following the lower red line in the diagram below; in the other two possibilities, we would not really be talking of roof-raising but of building an extra story). Does this make sense? (I suppose it will be lost if I follow one of the two other possibilities?)
December 28, 20223 yr Author PS. The contractor proposes to do this for 3250eur+taxes (whether it's cellulose or rock-wool). Does this sound like it's in the right general ball park? The house is about 12m long (on the inside).
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