Best insulation method for LP Smartside panels as sheathing & siding?
Building woodshop in cold climate…zone 6-7. Using LP Smart side panels as sheathing and the siding. 190 series, product is .53″ thick.
Concerned about condensation on interior side of this sheathing/siding in cold weather. Will dense pack cellulose be fine, or should this siding/sheathing be first sprayed with 2lb closed cell foam?
2×6 wall construction. I’m thinking I’ll rip strips of 2″ foam board to apply over interior side of studs to increase wall depth to 7.5″ & to decouple thermal transfer from the studs. With wet sprayed cellulose, the R-value of the wall would be about R-28.5
Cost is an issue, but…don’t want condensation issues either. To spray or not to spray a layer of the 2lb foam is the question. Thoughts?
If I should spray the foam, would 2″ suffice? That would boost the wall cavity to about R-34 so I would get that benefit, but again, trying to hit that good cost/benefit balance.
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