Quote:
Originally Posted by ChetT
Why not put full 4x8 sheets across the bottom of the joists?
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ChetT,
If I did exactly that, the air in the joist bays would self-circulate and I would lose some of the insulating potential.
My full plan is to finish this first phase, and after that, to fill the space between the joists with mineral wool, and then finish off with rigid foam, covering the bottom of the joists, exactly as you described.
Your continuous cover idea is a good one, because it will break the thermal path from the kitchen floor, through the joists.
I used to think that the thermal bridge idea was just insulation geek talk. But then I got a non-contact IR thermometer, and I could measure for myself what was happening. The insulation geeks were right. Now I'm an insulation geek, too.
Best,
-AC