Johns Manville R-30 Unfaced Fiberglass Roll Insulation, 31.25-sq ft Coverage (15-in W x 25-ft L), Multi-Pack, B390S
R-30 Unfaced Fiberglass Roll Insulation, 15-in x 25-ft
Boost attic efficiency with Johns Manville R-30 unfaced fiberglass roll insulation. Each 15-in x 25-ft roll covers 31.25 sq ft and is designed for 16-in on-center joists, delivering thermal performance and sound control without a vapor barrier.
Key Features:
- High Thermal Performance: R-30 fiberglass roll helps reduce heat loss and improve energy efficiency in attics and ceilings.
- Unfaced Design: No vapor barrier—ideal for adding over existing insulation where moisture control is managed elsewhere.
- Easy to Install: Sized for 16-in on-center wood studs; simply press in place between joists.
- Durable, Safe Materials: Formaldehyde-free fiberglass that won’t rot, mildew, or corrode pipes and wiring; GREENGUARD Gold certified.
- Sustainability Credentials: SCS Recycled Content certification and ENERGY STAR partner alignment.
Specifications Table:
| Specification | Details |
|---|---|
| R-Value | 30 |
| Coverage Area | 31.25 sq ft per roll |
| Roll Dimensions | 15 in W x 25 ft L |
| Thickness | 9.25 in |
| Faced/Unfaced | Unfaced |
| Stud/Joist Spacing | 16 in on center |
| Insulation Type | Fiberglass |
| For Use in Attics | Yes |
| For Use in Ceilings | Yes |
| For Use in Walls | No |
| For Use in Floors | No |
| Framing Type | Wood studs |
| Formaldehyde Free | Yes |
| Sound Barrier | Yes |
| Reflective | No |
| Vapor Retardant | No |
| ENERGY STAR Certified | Yes (program partner) |
| GREENGUARD Gold Certified | Yes |
| SCS Recycled Content | Yes |
| Warranty | 1-year limited |
| Bag Dimensions (L x W x D) | 15 x 15 x 22 in |
| Package Type | Multi-pack |
| Package Count | 12 |
| Total Package Quantity | 12 |
| R-Value per Inch | 3.24 |
| Width | 15 in |
| Length | 25 ft |
| UNSPSC | 30141500 |
| Fits 2 x 4 Walls | No |
| Fits 2 x 6 Walls | No |
| For Use in Basements | No |
| For Use in Crawlspaces | No |
| For Use in Doors/Windows/Duct/Electrical/Plumbing/Vents/Masonry/Garage Doors | No |
Frequently Asked Questions (FAQ):
Q: How much area does one roll cover?
A: Each roll covers 31.25 sq ft (15 in. wide x 25 ft. long).
Q: Is a vapor barrier included?
A: No. This is unfaced insulation and does not include a vapor retarder.
Q: Where is this product best used?
A: Designed for attics and ceilings in wood-framed construction with 16-in on-center spacing.
Q: What is the roll thickness?
A: Approximately 9.25 inches thick to achieve R-30.
Q: Is it safe for indoor air quality?
A: Yes. It is GREENGUARD Gold Certified and formaldehyde-free.
A Cloud-Soft Layer of Quiet, Cozy Performance
This plush, alabaster roll lays down like a whisper, instantly elevating an attic into a cocoon of calm and comfort. Its unfaced profile keeps the look clean while delivering steadfast R-30 performance that quiets and insulates. Pair it with warm wood tones and matte-black hardware for a crafted, modern envelope. It’s the invisible luxury that makes every room feel composed and beautifully livable.
Upgrade your attic with R-30 performance today and start saving on energy bills season after season.
Original: $44.80
-70%$44.80
$13.44Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
R-30 Unfaced Fiberglass Roll Insulation, 15-in x 25-ft
Boost attic efficiency with Johns Manville R-30 unfaced fiberglass roll insulation. Each 15-in x 25-ft roll covers 31.25 sq ft and is designed for 16-in on-center joists, delivering thermal performance and sound control without a vapor barrier.
Key Features:
- High Thermal Performance: R-30 fiberglass roll helps reduce heat loss and improve energy efficiency in attics and ceilings.
- Unfaced Design: No vapor barrier—ideal for adding over existing insulation where moisture control is managed elsewhere.
- Easy to Install: Sized for 16-in on-center wood studs; simply press in place between joists.
- Durable, Safe Materials: Formaldehyde-free fiberglass that won’t rot, mildew, or corrode pipes and wiring; GREENGUARD Gold certified.
- Sustainability Credentials: SCS Recycled Content certification and ENERGY STAR partner alignment.
Specifications Table:
| Specification | Details |
|---|---|
| R-Value | 30 |
| Coverage Area | 31.25 sq ft per roll |
| Roll Dimensions | 15 in W x 25 ft L |
| Thickness | 9.25 in |
| Faced/Unfaced | Unfaced |
| Stud/Joist Spacing | 16 in on center |
| Insulation Type | Fiberglass |
| For Use in Attics | Yes |
| For Use in Ceilings | Yes |
| For Use in Walls | No |
| For Use in Floors | No |
| Framing Type | Wood studs |
| Formaldehyde Free | Yes |
| Sound Barrier | Yes |
| Reflective | No |
| Vapor Retardant | No |
| ENERGY STAR Certified | Yes (program partner) |
| GREENGUARD Gold Certified | Yes |
| SCS Recycled Content | Yes |
| Warranty | 1-year limited |
| Bag Dimensions (L x W x D) | 15 x 15 x 22 in |
| Package Type | Multi-pack |
| Package Count | 12 |
| Total Package Quantity | 12 |
| R-Value per Inch | 3.24 |
| Width | 15 in |
| Length | 25 ft |
| UNSPSC | 30141500 |
| Fits 2 x 4 Walls | No |
| Fits 2 x 6 Walls | No |
| For Use in Basements | No |
| For Use in Crawlspaces | No |
| For Use in Doors/Windows/Duct/Electrical/Plumbing/Vents/Masonry/Garage Doors | No |
Frequently Asked Questions (FAQ):
Q: How much area does one roll cover?
A: Each roll covers 31.25 sq ft (15 in. wide x 25 ft. long).
Q: Is a vapor barrier included?
A: No. This is unfaced insulation and does not include a vapor retarder.
Q: Where is this product best used?
A: Designed for attics and ceilings in wood-framed construction with 16-in on-center spacing.
Q: What is the roll thickness?
A: Approximately 9.25 inches thick to achieve R-30.
Q: Is it safe for indoor air quality?
A: Yes. It is GREENGUARD Gold Certified and formaldehyde-free.
A Cloud-Soft Layer of Quiet, Cozy Performance
This plush, alabaster roll lays down like a whisper, instantly elevating an attic into a cocoon of calm and comfort. Its unfaced profile keeps the look clean while delivering steadfast R-30 performance that quiets and insulates. Pair it with warm wood tones and matte-black hardware for a crafted, modern envelope. It’s the invisible luxury that makes every room feel composed and beautifully livable.
Upgrade your attic with R-30 performance today and start saving on energy bills season after season.
