Johns Manville R-30 Unfaced Fiberglass Batt Attic Insulation, 58.66-sq ft Coverage (16-in W x 48-in L)
R-30 Unfaced Fiberglass Batt Attic Insulation
Formaldehyde-free fiberglass batts designed for attics deliver R-30 thermal performance with sound control. Precut to fit 16-in on-center wood stud cavities, each bag covers 58.66 sq ft for efficient energy upgrades.
Key Features:
- High R-Value Performance: R-30 thermal insulation helps reduce energy costs and improve comfort
- Unfaced Design: No vapor barrier—ideal for adding over existing insulation layers
- Precut for Easy Fit: 16-in x 48-in batts press in place between joists for quick installation
- Durable, Safe Material: Fiberglass won’t rot or corrode; formaldehyde-free and GREENGUARD Gold Certified
- Sound Control: Helps dampen noise in attics and living spaces
Specifications Table:
| Specification | Details |
|---|---|
| Coverage Area (Sq. Feet) | 58.66 |
| Length (Inches) | 48 |
| Width (Inches) | 16 |
| Thickness (Inches) | 10.25 |
| Faced/Unfaced | Unfaced |
| For Use in Attics | Yes |
| For Use in Basements | Yes |
| For Use in Ceilings | Yes |
| For Use in Floors | Yes |
| For Use in Crawlspaces | No |
| For Use in Walls | 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 |
| Formaldehyde Free | Yes |
| Framing Type | Wood studs |
| Insulation Type | Fiberglass |
| Maximum R-Value | 30 |
| R-Value per Inch | 2.9268 |
| Sound Barrier | Yes |
| Stud Spacing (Inches) | 16 |
| Vapor Retardant | No |
| ENERGY STAR Certified | Yes |
| GREENGUARD Gold Certified | Yes |
| Warranty | 1-year limited |
| Package Weight (lbs.) | 22.8 |
| Bag Dimensions (L x W x D) | 16.5 x 20 x 50 |
| Package Type | Multi-pack |
| Package Count | 11 |
| Multi-Pack Quantity | 4 |
| Total Package Quantity | 44 |
| UNSPSC | 11162400 |
Frequently Asked Questions (FAQ):
Q: How much area does one bag cover?
A: One bag covers 58.66 square feet with 11 precut pieces sized 16 in x 48 in.
Q: Can I install this over existing insulation?
A: Yes. As an unfaced batt without a vapor barrier, it can be layered over existing insulation where appropriate.
Q: What framing does it fit?
A: Designed for 16-in on-center wood stud or joist spacing in attics and ceilings.
Q: Is it safe for indoor air quality?
A: Yes. It is formaldehyde-free and GREENGUARD Gold Certified for indoor air quality.
Q: Where can it be used?
A: For use in attics, ceilings, basements, and floors; not intended for walls or crawlspaces.
A quiet, cozy attic upgrade with effortless precision
These pristine, unfaced batts slip neatly between joists, instantly dialing up comfort while softening household noise. The generous 10.25-in loft and R-30 rating create a plush thermal blanket that feels tailor-made for 16-inch spacing. Layer them to build a serene envelope above bedrooms, then finish with clean access panels for a refined look. It’s a simple, luxe step toward a calmer, more efficient home.
Upgrade your attic with R-30 comfort—add Johns Manville batts to boost efficiency and quiet today.
Original: $74.62
-70%$74.62
$22.39Product Information
Product Information
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Description
R-30 Unfaced Fiberglass Batt Attic Insulation
Formaldehyde-free fiberglass batts designed for attics deliver R-30 thermal performance with sound control. Precut to fit 16-in on-center wood stud cavities, each bag covers 58.66 sq ft for efficient energy upgrades.
Key Features:
- High R-Value Performance: R-30 thermal insulation helps reduce energy costs and improve comfort
- Unfaced Design: No vapor barrier—ideal for adding over existing insulation layers
- Precut for Easy Fit: 16-in x 48-in batts press in place between joists for quick installation
- Durable, Safe Material: Fiberglass won’t rot or corrode; formaldehyde-free and GREENGUARD Gold Certified
- Sound Control: Helps dampen noise in attics and living spaces
Specifications Table:
| Specification | Details |
|---|---|
| Coverage Area (Sq. Feet) | 58.66 |
| Length (Inches) | 48 |
| Width (Inches) | 16 |
| Thickness (Inches) | 10.25 |
| Faced/Unfaced | Unfaced |
| For Use in Attics | Yes |
| For Use in Basements | Yes |
| For Use in Ceilings | Yes |
| For Use in Floors | Yes |
| For Use in Crawlspaces | No |
| For Use in Walls | 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 |
| Formaldehyde Free | Yes |
| Framing Type | Wood studs |
| Insulation Type | Fiberglass |
| Maximum R-Value | 30 |
| R-Value per Inch | 2.9268 |
| Sound Barrier | Yes |
| Stud Spacing (Inches) | 16 |
| Vapor Retardant | No |
| ENERGY STAR Certified | Yes |
| GREENGUARD Gold Certified | Yes |
| Warranty | 1-year limited |
| Package Weight (lbs.) | 22.8 |
| Bag Dimensions (L x W x D) | 16.5 x 20 x 50 |
| Package Type | Multi-pack |
| Package Count | 11 |
| Multi-Pack Quantity | 4 |
| Total Package Quantity | 44 |
| UNSPSC | 11162400 |
Frequently Asked Questions (FAQ):
Q: How much area does one bag cover?
A: One bag covers 58.66 square feet with 11 precut pieces sized 16 in x 48 in.
Q: Can I install this over existing insulation?
A: Yes. As an unfaced batt without a vapor barrier, it can be layered over existing insulation where appropriate.
Q: What framing does it fit?
A: Designed for 16-in on-center wood stud or joist spacing in attics and ceilings.
Q: Is it safe for indoor air quality?
A: Yes. It is formaldehyde-free and GREENGUARD Gold Certified for indoor air quality.
Q: Where can it be used?
A: For use in attics, ceilings, basements, and floors; not intended for walls or crawlspaces.
A quiet, cozy attic upgrade with effortless precision
These pristine, unfaced batts slip neatly between joists, instantly dialing up comfort while softening household noise. The generous 10.25-in loft and R-30 rating create a plush thermal blanket that feels tailor-made for 16-inch spacing. Layer them to build a serene envelope above bedrooms, then finish with clean access panels for a refined look. It’s a simple, luxe step toward a calmer, more efficient home.
Upgrade your attic with R-30 comfort—add Johns Manville batts to boost efficiency and quiet today.
