R-19 Unfaced Fiberglass Batt Insulation (19 in x 48 in)

JM R-19 unfaced fiberglass batts help improve comfort by slowing heat transfer and reducing sound transmission through walls, floors, and ceilings. Made with resilient glass fibers and a formaldehyde-free binder, theyre designed for reliable, long-term performance in residential applications.

Key Features:

Thermal Performance: R-19 fiberglass batts provide effective resistance to heat transfer for energy-saving comfort.
Sound Control: Helps reduce noise transmission through interior/exterior walls and floor/ceiling assemblies.
Formaldehyde-Free: Designed not to off-gas formaldehyde in indoor environments.
Durable Inorganic Fibers: Resists rot and mildew and is non-corrosive to pipes, wiring, and metal studs.
Dimensional Stability: Bonded glass fibers help prevent slumping, settling, or breakdown in normal applications.

Specifications Table:

Specification	Details
Brand	JM
Manufacturer	Johns Manville
Product Type	Batt Insulation
Material	Fiberglass
R-Value	R-19
Facing	Unfaced
Width	19 in
Length	48 in
Insulation Thickness	6-1/2 in
Coverage	114 sq-ft
Application	For new construction, remodels, walls, floors, ceilings, basements, attics and crawlspaces
For Use With	Wood stud framing
Flame Spread Index	<25
Smoke Developed Index	<50
Temperature Rating	850 deg F
Water Vapor Sorption	<5 %
Item Name	Building and Residential Fiberglass
Features	Formaldehyde-free; thermally efficient; sound control; durable inorganic glass; dimensionally stable (resists slumping/settling)
Standards/Certifications	ASTM C665 Type I; ASTM E136; IBC; Energy Star Certified; Greenguard Gold Certified; Indoor Air Quality Certified; NAIMA 16 CFR Part 460; Recycled Content Certified
Manufacturer Part #	U1312
DI Part #	031979109999

Frequently Asked Questions (FAQ):

Q: Where can these batts be used?
A: They are intended for new construction and remodels in walls, floors, ceilings, basements, attics, and crawlspaces.

Q: Are these batts faced or unfaced?
A: They are unfaced fiberglass batts.

Q: What framing are they sized for?
A: They are listed for use with wood stud framing.

Q: What are the batt dimensions and thickness?
A: Each batt is 19 in wide x 48 in long, with 6-1/2 in thickness.

Q: Do these meet any standards or certifications?
A: Listed standards/certifications include ASTM C665 Type I, ASTM E136, IBC, Energy Star Certified, Greenguard Gold Certified, Indoor Air Quality Certified, NAIMA 16 CFR Part 460, and Recycled Content Certified.

Quiet luxury, built into the bones of the room

Think of this R-19 unfaced fiberglass batt as the invisible layer of refinementsoftening sound, tempering heat, and making every room feel more composed. Its clean, unfaced profile is all about restraint: performance without visual noise, ready to disappear behind drywall and let your finishes take center stage. Use it to elevate bedrooms, media rooms, or a serene home office where comfort reads as sophistication. Its the kind of foundational upgrade that turns a house into a truly luxurious retreat.

Upgrade your walls, floors, or ceilings with JM R-19 unfaced fiberglass batts for lasting thermal comfort and quieter rooms.

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