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Knauf R-19 is a fiberglass roll insulation with a kraft paper facing, made for wood-framed walls, floors and ceilings where a higher R-value is needed. Its ECOSE binder is bio-based and free of phenol, formaldehyde and acrylics, and the product is GREENGUARD certified for low indoor emissions. The kraft facing gives it a built-in vapor retarder, so it covers walls and ceilings in one step where building codes allow a faced product. It competes with other R-19 faced batts and rolls on the same jobs; the main trade-offs are the itch and dust of handling fiberglass and the care needed to fit it tightly around framing and obstructions.
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Lowest price we've seen: $849.00 on Nov 12 at The Home Depot. Tracked across 1 store since Nov 12.
Owners and installers generally report that the rolls are easy to handle and cut, that the facing stays put, and that the low-odor, formaldehyde-free binder is noticeable compared with older fiberglass.
This is Knauf R-19 kraft faced fiberglass insulation, supplied in a roll. It is made with ECOSE Technology, a binder chemistry based on rapidly renewable bio-based materials instead of the non-renewable, petroleum-based chemicals traditionally used in fiberglass insulation.
The ECOSE binder reduces binder embodied energy. It does not contain phenol, formaldehyde, acrylics or artificial colors.
The product is certified to UL Environment GREENGUARD standards for low chemical emissions into indoor air during use. It is also a LEED (Leadership in Energy and Environmental Design) eligible product.
