Roxul ComfortBatt - Manual (Page 11)

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ROXUL ® Insulation Products For Residential Thermal Applications
*Check with your state/municipal building code for approved vapor barrier/retarder information.
Better: R-30
CB R-30 + VB + Air Space
(51 mm / 2")
1 Shingles
2 Roofing Felt (Tar Paper)
3 Sheathing
4 2” x 10” Roof Joists
5 ROXUL COMFORTBATT ® (R30)
6 Vapor Control Layer *
Best: R-36
CB R-30 + CB IS R-6 + VB + Air Space
(51 mm / 2")
1 Shingles
2 Roofing Felt (Tar Paper)
3 Sheathing
4 2” x 10” Roof Joists
5 ROXUL COMFORTBATT ® (R30)
6 ROXUL COMFORTBOARd ™ IS (R6)
7 Vapor Control Layer *
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