Floor: Styrofoam (with CNC'd underside, or strips to smooth corrugations),vapour barrier, 9mm marine ply
Walls: foiled bubblewrap in the non-window concaves, PIR, vapour barrier, 3-4mm ply, cupboards
Ceiling: PIR, vapour barrier, then concave thin ply? Maybe CNC'd styrofoam to present a smooth face to the PIR sheets.
From what I've seen so far, the £/R-value of PIR is under £6 per m²K/W, whereas Aerogel is over £70 per m²K/W, albeit 33% thinner. Don't think I'm that short on space.
Current plan:
Floor: Styrofoam (with CNC'd underside, or strips to smooth corrugations),vapour barrier, 9mm marine ply
Walls: foiled bubblewrap in the non-window concaves, PIR, vapour barrier, 3-4mm ply, cupboards
Ceiling: PIR, vapour barrier, then concave thin ply? Maybe CNC'd styrofoam to present a smooth face to the PIR sheets.
From what I've seen so far, the £/R-value of PIR is under £6 per m²K/W, whereas Aerogel is over £70 per m²K/W, albeit 33% thinner. Don't think I'm that short on space.
Any tips?