






Johns Manville (JM) ComfortTherm R-19 Encapsulated Fiberglass Batt Insulation, 23 in x 93 in, 133.68 sq ft
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.
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.
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 |
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).
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.
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.
Q: Is it formaldehyde-free?
A: Yes, it is listed as formaldehyde-free.
Q: How much area does one package cover?
A: One package covers 133.68 square feet.
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.
Upgrade your walls with JM ComfortTherm R-19 batts for cleaner installation, better comfort, and quieter rooms.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
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.
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.
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 |
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).
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.
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.
Q: Is it formaldehyde-free?
A: Yes, it is listed as formaldehyde-free.
Q: How much area does one package cover?
A: One package covers 133.68 square feet.
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.
Upgrade your walls with JM ComfortTherm R-19 batts for cleaner installation, better comfort, and quieter rooms.






















