Roxul ComfortBatt - Manual (Page 22)

Better | Best
22
Better: R-30
2 x 10 Joists + CB R-30
(or attach 1 x 2 furring/strapping strip to
2 x 8 joist to build up the joist cavity depth)
1 Vapor Control Layer *
2 2 x 10 Joists
3 ROXUL COMFORTBATT ® (R30)
4 Foundation Wall
Best: R-36
2 x 10 Joists + CB R-30 + CB IS R-6
(or attach 1 x 2 furring/strapping strip
to build up the joist cavity depth)
1 Vapor Control Layer *
2 2 x 10 Joists
3 ROXUL COMFORTBATT ® (R30)
4 ROXUL COMFORTBOARd ™ IS (R6)
5 Foundation Wall
Vented crawl spaces.
*Check with your state/municipal building code for approved vapor barrier/retarder information.
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