Better: r-30, Best: r-36 – Roxul ComfortBatt User Manual
Page 11
11
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
*
1
1
4
4
5
5
6
6
2
2
3
3
7