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Ships within 48 hours · Estimated delivery Jul 6 - Jul 11
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Description
Johns Manville R-30 Unfaced Fiberglass Batt Insulation, 88-sq ft Coverage, 24 in x 48 in (U1344S)R 30 Unfaced Fiberglass Batt Insulation, 24 in x 48 in Improve thermal performance and sound control in attics and ceilings with Johns Manville R 30 unfaced fiberglass batts. Precut to 24 in x 48 in for 24 in on center framing, these formaldehyde free batts cover 88 sq ft per package and are GREENGUARD Gold certified. Key Features: High R Value Thermal Performance: R 30 fiberglass batts help boost energy efficiency and comfort Unfaced Design: No vapor
R-30 Unfaced Fiberglass Batt Insulation, 24 in x 48 in
Improve thermal performance and sound control in attics and ceilings with Johns Manville R-30 unfaced fiberglass batts. Precut to 24 in x 48 in for 24-in on-center framing, these formaldehyde-free batts cover 88 sq ft per package and are GREENGUARD Gold certified.
Key Features:
- High R-Value Thermal Performance: R-30 fiberglass batts help boost energy efficiency and comfort
- Unfaced Design: No vapor retarder—ideal for adding over existing insulation where permitted
- Precut for Easy Install: 24 in x 48 in batts fit 24-in on-center wood studs; simply press in place
- Durable and Safe: Will not rot, mildew, or corrode pipes/wiring; formaldehyde-free and noncorrosive
- Certified Air Quality: GREENGUARD Gold and SCS recycled content certifications
Specifications Table:
| Specification | Details |
|---|---|
| R-Value | 30 |
| Insulation Type | Fiberglass |
| Faced/Unfaced | Unfaced |
| Dimensions (each batt) | 24 in W x 48 in L x 10.25 in T |
| Coverage Area | 88 sq ft per package |
| Stud Spacing | 24 in on-center |
| Framing Type | Wood studs |
| For Use In | Attics, ceilings, basements, floors |
| Not For Use In | Walls, crawlspaces, doors, ducts, electrical, garage doors, masonry, plumbing, vents, windows |
| Formaldehyde Free | Yes |
| Sound Barrier | Yes |
| Vapor Retardant | No |
| Package Weight | 34.1 lb |
| Bag Dimensions (L x W x D) | 24.5 in x 20 in x 50 in |
| Package Type | Multi-pack |
| Package Count | 11 pieces |
| Multi-Pack Quantity | 4; Total package quantity 44 (as listed) |
| R-Value per Inch | 2.9268 |
| ENERGY STAR Certified | Yes (program partner) |
| GREENGUARD Gold Certified | Yes |
| Warranty | 1-year limited |
| Thickness | 10.25 in |
| Length | 48 in |
| Width | 24 in |
Frequently Asked Questions (FAQ):
Q: How much area does one package cover?
A: One package covers 88 square feet.
Q: Where can I use these batts?
A: They are designed for wood-framed attics, ceilings, basements, and floors; not for walls or crawlspaces per listing.
Q: Do these batts have a vapor barrier?
A: No, they are unfaced and contain no vapor retarder.
Q: What are the dimensions and thickness?
A: Each batt is 24 in wide by 48 in long with a nominal thickness of 10.25 in.
Q: Are there any certifications?
A: Yes—ENERGY STAR partner, GREENGUARD Gold Certified, and SCS Recycled Content certified.
Silent Comfort, Tailored for the Attic
These alabaster batts bring a serene hush to the home, cocooning your upper floors in quiet luxury while elevating energy performance. I love the crisp, uniform edges—precut to slip neatly between joists for an impeccably tidy install. Layer them generously in the attic for a plush, cloudlike blanket that improves acoustics and keeps temperatures consistent. It’s an elegant essential for crafting a refined, comfortable sanctuary from the roof down.
Upgrade your attic with R-30 performance today and start saving on energy bills season after season.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy