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Posted by on August 22, 2006, 7:18 am
Hi:
I'm having my wine cellar built now and the insulation contractor has
used 'FSK' foil-backed insulation in all stud bays. On the
interior-facing walls, the foil is on the outside of the studs with
foil tape ensuring that there's a seal. On the exterior facing wall,
they put the FSK foil into the stud bay and then placed fiberglass
batts into the bay. The FSK in the exterior facing wall is loose and
not contiguous from bay to bay. I've read that 6 mil poly vapor barrier
should be left loose in the bays running contigouously along the length
of the wall, with the batts placed in the stud bays after the vapor
barrier.
Should the insulation contractor remove the FSK on the exterior-facing
walls and put up a 6 mil vapor barrier? If so, thould the poly replace
the FSK foil, or be used in addition to the FSK?
Thanks,
Ken
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