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Insulation in Northern Saskatchewan, my planned wall

jab99 on Tue, 10/16/2012 - 08:15

Hello

Here is wall detail

Certainteed Membrane vapour barrier (breathable if wall humidity get too high)

Roxul batt insulation (2x6 wall)

Plywood sheathing ( handles any accidental moisture better)

Typar Drain wrap (allows small air sapce behind foam)

2 layers of stagered 1.5 inch eps exterior foam board (breathable to exterior)

1 x 4 firring strips (rain screen)

Hardie board siding. (my wife loves it)

Widows are in installed as innie's with Azek exterior jamb extensions. (tripple pane dual low e and argon)

Goal, be economical, reduce all thermal gaps and be airtight.

Thoughts???

by xxPaulCPxx in reply to jab99 [original] on Wed, 10/17/2012 - 09:25

Why Roxul and not Cellulose?

Why inset? I could see snow piling up on the windowsills... and where will the cat perch?