Workshop shell-in for part of a steel building
Plans are to shell inside of new steel bldg for work shop…. if I screw polyiso to bottom of rafter,
(to limit thermal transfer there), then screw steel to that as shop ceiling, I would then flash with 1-2 ” foam, filling the remainder with densepack blown in,
OR just blown in only densepack to top of rafter,( 6″ depth, I believe)…..
The question is…..do I leave blown-in open to the inside atmosphere at top of fill, possibly netting blown-in for stability, or do I lose r-factor leaving it open, Do I somehow need to seal top of rafters, … around scissor connectors?
If necessary, what product would be best?
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