Johns Manville R-30 Attic Unfaced Fiberglass Batt Insulation, 86.62-sq ft Coverage (23.625-in W x 48-in L)
R-30 Unfaced Fiberglass Attic Batt Insulation
Boost attic efficiency with Johns Manville’s R-30 unfaced fiberglass batts. Precut to fit 24-in on-center framing, these formaldehyde-free batts add thermal performance and sound control with 86.62 sq ft of total coverage.
Key Features:
- High R-Value Performance: R-30 batts help improve energy efficiency and comfort in attics and ceilings
- Unfaced Design: No vapor barrier—ideal for adding over existing insulation where appropriate
- Precut Convenience: 48-in lengths sized for 23.625-in cavities and 24-in on-center joists; press in place
- Healthy Home Certifications: Formaldehyde-free, GREENGUARD Gold Certified, and SCS recycled content
- Durable Fiberglass: Will not rot, mildew, or corrode pipes, wiring, or metal studs
Specifications Table:
| Specification | Details |
|---|---|
| Coverage Area | 86.62 sq ft |
| Length | 48 in |
| Width | 23.625 in |
| Thickness | 8.25 in |
| Faced/Unfaced | Unfaced |
| Fits 2 x 4 Walls | No |
| Fits 2 x 6 Walls | No |
| For Use in Attics | Yes |
| For Use in Basements | No |
| For Use in Ceilings | Yes |
| For Use in Crawlspaces | No |
| For Use in Doors | No |
| For Use in Duct | No |
| For Use in Electrical | No |
| For Use in Floors | Yes |
| For Use in Garage Doors | No |
| For Use in Masonry | No |
| For Use in Plumbing | No |
| For Use in Vents | No |
| For Use in Walls | No |
| For Use in Windows | No |
| Formaldehyde Free | Yes |
| Framing Type | Wood studs |
| Insulation Type | Fiberglass |
| Maximum R-Value | R-30 |
| R-Value per Inch | 2.9268 |
| Stud Spacing | 24 in on-center |
| Sound Barrier | Yes |
| Vapor Retardant | No |
| ENERGY STAR Certified | Yes |
| GREENGUARD Gold Certified | Yes |
| Warranty | 1-year limited |
| Package Count | 11 batts |
| Package Type | Multi-pack |
| Bag Dimensions (L x W x D) | 20 x 20 x 50 in |
| Package Weight | 47.3 lb |
| Multi-Pack Quantity | 4 |
| Total Package Quantity | 44 |
| UNSPSC | 11162400 |
Frequently Asked Questions (FAQ):
Q: How much area does this package cover?
A: 86.62 square feet total coverage.
Q: What are the batt dimensions?
A: Each batt is 23.625 inches wide, 48 inches long, and approximately 8.25 inches thick.
Q: Is a vapor retarder included?
A: No. These are unfaced batts and do not include a vapor retarder.
Q: Where can I use it?
A: Designed for attics and ceilings; also suitable for floors with 24-in on-center framing. Not for walls, crawlspaces, or masonry.
Q: Is the insulation formaldehyde-free and certified for indoor air quality?
A: Yes. It is formaldehyde-free and GREENGUARD Gold Certified.
Quiet Comfort, Tailored for the Attic
R-30 batts deliver a whisper-quiet calm while wrapping your home in a cocoon of cozy efficiency. I love the clean, unfaced profile—streamlined and effortless to layer for cathedral ceilings. Pair with crisp white attic decking and organized storage to create a polished, functional retreat above the living space. This is the kind of invisible luxury that elevates daily living from the inside out.
Upgrade your attic with R-30 performance today and start saving on energy while enhancing year-round comfort.
Original: $129.12
-70%$129.12
$38.74Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
R-30 Unfaced Fiberglass Attic Batt Insulation
Boost attic efficiency with Johns Manville’s R-30 unfaced fiberglass batts. Precut to fit 24-in on-center framing, these formaldehyde-free batts add thermal performance and sound control with 86.62 sq ft of total coverage.
Key Features:
- High R-Value Performance: R-30 batts help improve energy efficiency and comfort in attics and ceilings
- Unfaced Design: No vapor barrier—ideal for adding over existing insulation where appropriate
- Precut Convenience: 48-in lengths sized for 23.625-in cavities and 24-in on-center joists; press in place
- Healthy Home Certifications: Formaldehyde-free, GREENGUARD Gold Certified, and SCS recycled content
- Durable Fiberglass: Will not rot, mildew, or corrode pipes, wiring, or metal studs
Specifications Table:
| Specification | Details |
|---|---|
| Coverage Area | 86.62 sq ft |
| Length | 48 in |
| Width | 23.625 in |
| Thickness | 8.25 in |
| Faced/Unfaced | Unfaced |
| Fits 2 x 4 Walls | No |
| Fits 2 x 6 Walls | No |
| For Use in Attics | Yes |
| For Use in Basements | No |
| For Use in Ceilings | Yes |
| For Use in Crawlspaces | No |
| For Use in Doors | No |
| For Use in Duct | No |
| For Use in Electrical | No |
| For Use in Floors | Yes |
| For Use in Garage Doors | No |
| For Use in Masonry | No |
| For Use in Plumbing | No |
| For Use in Vents | No |
| For Use in Walls | No |
| For Use in Windows | No |
| Formaldehyde Free | Yes |
| Framing Type | Wood studs |
| Insulation Type | Fiberglass |
| Maximum R-Value | R-30 |
| R-Value per Inch | 2.9268 |
| Stud Spacing | 24 in on-center |
| Sound Barrier | Yes |
| Vapor Retardant | No |
| ENERGY STAR Certified | Yes |
| GREENGUARD Gold Certified | Yes |
| Warranty | 1-year limited |
| Package Count | 11 batts |
| Package Type | Multi-pack |
| Bag Dimensions (L x W x D) | 20 x 20 x 50 in |
| Package Weight | 47.3 lb |
| Multi-Pack Quantity | 4 |
| Total Package Quantity | 44 |
| UNSPSC | 11162400 |
Frequently Asked Questions (FAQ):
Q: How much area does this package cover?
A: 86.62 square feet total coverage.
Q: What are the batt dimensions?
A: Each batt is 23.625 inches wide, 48 inches long, and approximately 8.25 inches thick.
Q: Is a vapor retarder included?
A: No. These are unfaced batts and do not include a vapor retarder.
Q: Where can I use it?
A: Designed for attics and ceilings; also suitable for floors with 24-in on-center framing. Not for walls, crawlspaces, or masonry.
Q: Is the insulation formaldehyde-free and certified for indoor air quality?
A: Yes. It is formaldehyde-free and GREENGUARD Gold Certified.
Quiet Comfort, Tailored for the Attic
R-30 batts deliver a whisper-quiet calm while wrapping your home in a cocoon of cozy efficiency. I love the clean, unfaced profile—streamlined and effortless to layer for cathedral ceilings. Pair with crisp white attic decking and organized storage to create a polished, functional retreat above the living space. This is the kind of invisible luxury that elevates daily living from the inside out.
Upgrade your attic with R-30 performance today and start saving on energy while enhancing year-round comfort.
