Johns Manville R-19 Unfaced Fiberglass Roll Insulation, 48.96-sq ft Coverage (15-in W x 39.16-ft L) – Multi-Pack, B373S
R-19 Unfaced Fiberglass Roll Insulation, 15-in x 39.16-ft
Improve thermal performance and sound control with Johns Manville R-19 unfaced fiberglass roll insulation. Sized for 2x6 wood-stud walls and long runs with 16-in on-center spacing, each roll covers 48.96 sq ft and installs easily by pressing in place.
Key Features:
- Energy Efficiency + Sound Control: R-19 fiberglass helps reduce heat loss and unwanted noise in walls and floors
- Sized for 2x6 Walls: 15-in width fits 16-in on-center wood studs for long, unobstructed bays
- Unfaced Design: No vapor retarder—ideal for adding over existing insulation where needed
- Healthy Home Certifications: GREENGUARD Gold and SCS certified; formaldehyde-free
- Durable and Easy to Install: Won’t rot, mildew, or corrode pipes and metal; simply press in place
Specifications Table:
| Specification | Details |
|---|---|
| R-Value | 19 |
| Coverage Area | 48.96 sq ft |
| Width | 15 in |
| Length | 39.16 ft |
| Thickness | 6.5 in |
| Insulation Type | Fiberglass |
| Faced/Unfaced | Unfaced |
| Framing Type | Wood studs |
| Stud Spacing | 16 in on center |
| Fits 2 x 6 Walls | Yes |
| Fits 2 x 4 Walls | No |
| For Use in Walls | Yes |
| For Use in Floors | Yes |
| For Use in Basements | Yes |
| For Use in Attics | No |
| For Use in Ceilings | No |
| For Use in Crawlspaces | No |
| Reflective | No |
| Vapor Retardant | No |
| Sound Barrier | Yes |
| Formaldehyde Free | Yes |
| ENERGY STAR Certified | Yes (Seal and Insulate partner) |
| GREENGUARD Gold Certified | Yes |
| Package Type | Multi-pack |
| Package Count | 1 |
| Total Package Quantity | 1 |
| Bag Dimensions (L x W x D) | 15.5 x 19 x 26 in |
| Package Weight | 12.1 lb |
| R-Value per Inch | 2.92 |
| Warranty | 1-year limited |
| UNSPSC | 30141500 |
Frequently Asked Questions (FAQ):
Q: How much area does one roll cover?
A: Each roll covers 48.96 square feet (15 in. wide x 39.16 ft. long).
Q: Is this insulation faced?
A: No. It is unfaced and does not include a vapor retarder.
Q: What wall framing is it designed for?
A: It’s sized for 2x6 wood-stud walls with 16-in on-center spacing.
Q: Can it be used for sound control?
A: Yes. It provides sound control in addition to thermal performance.
Q: Is it safe for indoor air quality?
A: Yes. It is formaldehyde-free and GREENGUARD Gold certified.
A Quiet, Cozy Backbone for Modern Walls
This R-19 fiberglass roll tucks neatly into 2x6 stud bays, wrapping rooms in a soft hush and steady comfort. I love its unfaced profile—clean, minimal, and adaptable when layering for performance. Pair it with crisp drywall and a serene paint palette to let textures and furnishings sing without echo. It’s an understated essential that elevates living with quiet luxury and energy-wise design.
Upgrade your walls with R-19 performance today and enjoy quieter, more efficient comfort year-round.
Original: $41.98
-70%$41.98
$12.59Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
R-19 Unfaced Fiberglass Roll Insulation, 15-in x 39.16-ft
Improve thermal performance and sound control with Johns Manville R-19 unfaced fiberglass roll insulation. Sized for 2x6 wood-stud walls and long runs with 16-in on-center spacing, each roll covers 48.96 sq ft and installs easily by pressing in place.
Key Features:
- Energy Efficiency + Sound Control: R-19 fiberglass helps reduce heat loss and unwanted noise in walls and floors
- Sized for 2x6 Walls: 15-in width fits 16-in on-center wood studs for long, unobstructed bays
- Unfaced Design: No vapor retarder—ideal for adding over existing insulation where needed
- Healthy Home Certifications: GREENGUARD Gold and SCS certified; formaldehyde-free
- Durable and Easy to Install: Won’t rot, mildew, or corrode pipes and metal; simply press in place
Specifications Table:
| Specification | Details |
|---|---|
| R-Value | 19 |
| Coverage Area | 48.96 sq ft |
| Width | 15 in |
| Length | 39.16 ft |
| Thickness | 6.5 in |
| Insulation Type | Fiberglass |
| Faced/Unfaced | Unfaced |
| Framing Type | Wood studs |
| Stud Spacing | 16 in on center |
| Fits 2 x 6 Walls | Yes |
| Fits 2 x 4 Walls | No |
| For Use in Walls | Yes |
| For Use in Floors | Yes |
| For Use in Basements | Yes |
| For Use in Attics | No |
| For Use in Ceilings | No |
| For Use in Crawlspaces | No |
| Reflective | No |
| Vapor Retardant | No |
| Sound Barrier | Yes |
| Formaldehyde Free | Yes |
| ENERGY STAR Certified | Yes (Seal and Insulate partner) |
| GREENGUARD Gold Certified | Yes |
| Package Type | Multi-pack |
| Package Count | 1 |
| Total Package Quantity | 1 |
| Bag Dimensions (L x W x D) | 15.5 x 19 x 26 in |
| Package Weight | 12.1 lb |
| R-Value per Inch | 2.92 |
| Warranty | 1-year limited |
| UNSPSC | 30141500 |
Frequently Asked Questions (FAQ):
Q: How much area does one roll cover?
A: Each roll covers 48.96 square feet (15 in. wide x 39.16 ft. long).
Q: Is this insulation faced?
A: No. It is unfaced and does not include a vapor retarder.
Q: What wall framing is it designed for?
A: It’s sized for 2x6 wood-stud walls with 16-in on-center spacing.
Q: Can it be used for sound control?
A: Yes. It provides sound control in addition to thermal performance.
Q: Is it safe for indoor air quality?
A: Yes. It is formaldehyde-free and GREENGUARD Gold certified.
A Quiet, Cozy Backbone for Modern Walls
This R-19 fiberglass roll tucks neatly into 2x6 stud bays, wrapping rooms in a soft hush and steady comfort. I love its unfaced profile—clean, minimal, and adaptable when layering for performance. Pair it with crisp drywall and a serene paint palette to let textures and furnishings sing without echo. It’s an understated essential that elevates living with quiet luxury and energy-wise design.
Upgrade your walls with R-19 performance today and enjoy quieter, more efficient comfort year-round.
