Insulating PWF basement
The "new plan" is to insulate the outer wall of my PWF basement with strips of EPS between the studs since I've found the material at a cost lower than mineral wool bats.. I'll cut strips of the sheet goods and install them much like bats for a total of 7 1/2"thickness. Inside the foam will be 3 1/2" of mineral wool as an ignition barrier for a cavity r of 45. Since my outer insulation is not air permeable, I should not need an interior vapor/air barrier. The question is is a friction fit of the foam enough of an air seal to prevent condensation on the sheathing, or should I use can foam around each panel? .
Posted Tue, 06/17/2014 - 11:38
Other Questions in Energy efficiency and durability
Best practices ideas for retrofitting existing PWF built in muskeg and best practices for foundations for new builds in muskeg (i.e. very wet !) and a severe cold climate