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- Comes in continuous rolls that vary in width and thickness.
- Usually installed between open ceiling joists and wall studs.
- Has a vapor barrier that should be installed with the vapor barrier toward the interior or heated area. Mend torn vapor barriers with tape.
- Available in R-values of R-11, R-13, R-19 and R-25. Thicknesses range from 3-1/2” to 8”.