- What does R-19 mean?
- R-19 is the insulation's thermal resistance. Higher R means more resistance to heat flow. R-19 is common for 2x6 exterior walls in moderate climates.
- Do I need a vapor barrier with unfaced batts?
- In cold climates, yes. Unfaced batts have no facing, so a separate vapor retarder goes on the warm-in-winter side. In mild climates, check local code.
- Will these fit my 2x4 walls?
- No. At 6.25 inches thick, they are made for 2x6 framing. For 2x4 walls, use R-13 or R-15 batts instead.
- How do I cut them?
- Compress the batt with a straightedge, then slice with a sharp utility knife. Cut slightly wide so the batt wedges into the cavity.
- Is this safe for indoor air?
- The binder is formaldehyde-free and the product is GREENGUARD certified for low emissions. Wear gloves, long sleeves and a mask while installing.
- Where is the Owens Corning EcoTouch R-19 Unfaced Batts 16 in x 96 in x 6.25 in cheapest?
- At Lowe's, for $62.05, as of our latest check.