At a Glance
R-Value per Inch: 3.17
Stud Spacing: 16 (in)
Sound BarrierJohns Manville R- 38 Attic Kraft faced Fiberglass Batt Insulation 42.66-sq ft ( 16-in W x 48-in L)
Item #110450 |
Model #K1244
Kraft-faced fiberglass batt insulation for use in wood-framed attics, ceilings, and floors and provides a built-in vapor barrier for moisture control
Improves energy efficiency and provides sound control
Batts are pre-cut in standard 4-ft length for use with 16-in on-center joist spacing
Simple to install, press in place between ceiling joists and staple tabs to joists if additional securement is required
Will not rot, mildew or deteriorate and is noncorrosive to pipes, wiring and metal studs
JM is a partner of the Seal and Insulate with ENERGY STAR program
SCS Recycled Content certification
GREENGUARD Gold Certified for office indoor air quality and SCS Certified for home indoor air quality
General | |||
|---|---|---|---|
Package Type | Individual pack | Insulation Type | Fiberglass |
Total Package Quantity | 8 | Package Count | 8 |
Dimensions | |||
|---|---|---|---|
Bag Dimensions (L x W x D) | 20 x 20 x 50 | Thickness (Inches) | 12 |
Coverage Area (Sq. Feet) | 42.66 | Width (Inches) | 16 |
Length (Inches) | 48 | R-Value per Inch | 3.17 |
Package Weight (lbs.) | 21.98 | Maximum R-Value | 38 |
Features | |||
|---|---|---|---|
Faced/Unfaced | Kraft faced | Stud Spacing (Inches) | 16 |
Formaldehyde Free | Yes | Vapor Retardant | Yes |
Sound Barrier | Yes | ||
Certifications | |||
|---|---|---|---|
CA Residents: Prop 65 Warning(s) | No | GREENGUARD Gold Certified | Yes |
ENERGY STAR Certified | No | ||
Warranty | |||
|---|---|---|---|
Warranty | Limited lifetime | ||
Compatibility | |||
|---|---|---|---|
For Use in Basements | No | For Use in Garage Doors | No |
For Use in Crawlspaces | No | For Use in Masonry | No |
For Use in Ceilings | Yes | For Use in Plumbing | No |
For Use in Attics | Yes | For Use in Vents | No |
For Use in Doors | No | For Use in Walls | No |
For Use in Duct | No | For Use in Windows | No |
For Use in Electrical | No | Fits 2 x 4 Walls | No |
For Use in Floors | Yes | Fits 2 x 6 Walls | No |
Miscellaneous | |||
|---|---|---|---|
UNSPSC | 11162400 | ||
Check out the Best Selling Batt Insulation on Lowes.com
Ratings may include incentivized customer reviews.
What Customers Are Saying
This insulation product is generally well-received for its effective thermal and sound insulation properties, as well as its straightforward and convenient installation process. Customers report noticeable improvements in temperature regulation and noise reduction after use. The insulation is considered high-quality, durable, and good value, with the added benefit of being formaldehyde-free. While a few users experienced minor issues during installation, the majority found the product easy to handle without lasting problems.
Customer review summary generated by AI, including incentivized reviews.2
Excelente
From R- 19 Wall Kraft faced Fiberglass Batt Insulation 87.18-sq ft ( 15-in W x 93-in L) Verified Purchaser
If getting multiple, may be easier to get delivery
Easy to use
From R- 19 Wall Kraft faced Fiberglass Batt Insulation 87.18-sq ft ( 15-in W x 93-in L) Verified Purchaser
Quality insulation, easy installation
Easy to install. I’d recommend wearing gloves and a light mask to deal the fibers. Goes in easy and provides a good level of insulation. We used it in our attic space for a boost in energy efficiency. Happy with the results.
From R- 19 Wall Kraft faced Fiberglass Batt Insulation 87.18-sq ft ( 15-in W x 93-in L) Verified Purchaser
All Good
Packaged well. Everything that I expected
From R- 19 Wall Unfaced Fiberglass Batt Insulation 87.18-sq ft ( 15-in W x 93-in L) Verified Purchaser
Do not Use on 2x4 walls
Great product. Very thick.
From R- 30 Attic Kraft faced Fiberglass Batt Insulation 58.66-sq ft ( 16-in W x 48-in L) Verified Purchaser
Thank you for choosing Johns Manville for your project. Our packaging has specifications listed on it to help guide in selecting the right product fo...
order in advance
worked perfectly
From R- 38 Attic Kraft faced Fiberglass Batt Insulation 64-sq ft ( 24-in W x 48-in L) Verified Purchaser
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