R-19 Encapsulated Fiberglass Batt Insulation (23" x 93")

Johns Manville ComfortTherm poly-encapsulated fiberglass batts deliver R-19 thermal performance with built-in vapor control and added sound reduction. The plastic wrap helps reduce itch and dust for a cleaner, more comfortable installation in standard wall cavities and other eligible applications.

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Key Features:

• Cleaner Install: Poly-encapsulated plastic wrap helps reduce itch and dust during handling and installation.
• Moisture Control: Encapsulated facing provides a built-in vapor retardant for added moisture management.
• Energy + Comfort: R-19 thermal resistance helps improve energy efficiency and indoor comfort.
• Sound Dampening: Helps reduce sound transmission through wall assemblies.
• Durable Inorganic Fibers: Won’t rot, mildew, or deteriorate and is noncorrosive to pipes, wiring, and metal studs.

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Specifications Table:

Specification	Details
Brand	JM
Series Name	ComfortTherm
Category	Batt Insulation
Insulation Type	Fiberglass
Faced/Unfaced	Encapsulated
Maximum R-Value	19
R-Value per Inch	2.923
Width (Inches)	23
Length (Inches)	93
Thickness (Inches)	6.5
Coverage Area (Sq. Feet)	133.68
Package Weight (lbs.)	33.9
Package Type	Multi-pack
Package Count	9
Total Package Quantity	36
Multi-Pack Quantity	4
Stud Spacing (Inches)	24
Framing Type	Wood studs
Fits 2 x 6 Walls	Yes
Fits 2 x 4 Walls	No
Vapor Retardant	Yes
Sound Barrier	Yes
Formaldehyde Free	Yes
ENERGY STAR Certified	Yes
For Use in Walls	Yes
For Use in Basements	Yes
For Use in Crawlspaces	Yes
For Use in Attics	No
For Use in Ceilings	No
For Use in Floors	No
For Use in Doors	No
For Use in Duct	No
For Use in Electrical	No
For Use in Garage Doors	No
For Use in Masonry	No
For Use in Plumbing	No
For Use in Vents	No
For Use in Windows	No
Bag Dimensions (L x W x D)	23.5 x 20 x 49
CA Residents: Prop 65 Warning(s)	No
Warranty	None
UNSPSC	11162400

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Frequently Asked Questions (FAQ):

Q: What stud spacing and wall size is this insulation designed for?
A: These batts are sized for 24-in on-center stud spacing and are pre-cut for standard 8-ft wall cavities (93-in length).

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Q: Is this a faced insulation, and does it act as a vapor retarder?
A: Yes. It is encapsulated and includes a vapor retardant for moisture control.

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Q: Where can I use this R-19 batt insulation?
A: It is intended for 2x6 wood-framed walls and can also be used where specified for floors and crawlspaces; confirm local code requirements for your application.

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Q: Is it formaldehyde-free?
A: Yes, it is listed as formaldehyde-free.

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Q: How much area does one package cover?
A: One package covers 133.68 square feet.

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Quiet luxury starts inside the walls

ComfortTherm is the kind of invisible upgrade that makes a room feel instantly more refined—warmer, quieter, and effortlessly composed. Its clean, poly-encapsulated wrap elevates the installation experience, keeping things tidy while delivering serious thermal and acoustical performance. Use it to cocoon bedrooms, nurseries, or a home office for a calm, gallery-like hush. It’s a foundational layer that turns everyday spaces into true sanctuaries of comfort.

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Upgrade your walls with JM ComfortTherm R-19 batts for cleaner installation, better comfort, and quieter rooms.