Johns Manville R-21 Kraft-Faced Fiberglass Batt Insulation, 15.25 in x 93 in (68.94 sq ft)
R-21 Kraft-Faced Fiberglass Wall Batt Insulation
Johns Manville R-21 kraft-faced fiberglass batts are designed for 2x6 wood-stud walls to help improve energy efficiency and reduce noise. The kraft facing provides a built-in vapor retarder for moisture control in concealed applications like exterior walls.
Key Features:
- Sized for 2x6 Walls: 15.25-in wide batts fit 16-in on-center wood-stud framing and 8-ft wall cavities.
- Built-In Vapor Retarder: Kraft facing helps control moisture in concealed wall applications.
- Energy & Sound Control: Helps improve thermal performance and provides sound control.
- Easy Installation: Press-fit between studs and staple facing tabs to framing when needed.
- Formaldehyde-Free & Durable: Formaldehyde-free fiberglass that won’t rot or mildew and is noncorrosive to pipes and wiring.
Specifications Table:
| Specification | Details |
|---|---|
| Category | Batt Insulation |
| Insulation Type | Fiberglass |
| Faced/Unfaced | Kraft faced |
| Maximum R-Value | 21 |
| R-Value per Inch | 3.8181 |
| Width (Inches) | 15.25 |
| Length (Inches) | 93 |
| Thickness (Inches) | 5.5 |
| Coverage Area (Sq. Feet) | 68.942 |
| Stud Spacing (Inches) | 16 |
| Framing Type | Wood studs |
| Fits 2 x 6 Walls | Yes |
| Fits 2 x 4 Walls | No |
| Vapor Retardant | Yes |
| Sound Barrier | Yes |
| Formaldehyde Free | Yes |
| ENERGY STAR Certified | Yes |
| GREENGUARD Gold Certified | Yes |
| Warranty | 1-year limited |
| For Use in Walls | Yes |
| For Use in Basements | Yes |
| For Use in Crawlspaces | Yes |
| For Use in Attics | No |
| For Use in Ceilings | No |
| For Use in Floors | No |
| For Use in Garage Doors | No |
| For Use in Doors | No |
| For Use in Windows | No |
| Package Weight (lbs.) | 29.47 |
| Package Type | Multi-pack |
| Package Count | 7 |
| Total Package Quantity | 35 |
| Multi-Pack Quantity | 5 |
| Bag Dimensions (L x W x D) | 20 x 20 x 50 |
| UNSPSC | 11162400 |
Frequently Asked Questions (FAQ):
Q: What wall framing is this insulation designed for?
A: It’s designed for 2x6 wood-stud walls with 16-in on-center spacing.
Q: Does it include a vapor barrier?
A: Yes—it's kraft-faced and includes a built-in vapor retarder for moisture control.
Q: Where can I use these batts?
A: They are listed for use in walls, basements, and crawlspaces (not for attics or ceilings).
Q: Is it formaldehyde-free?
A: Yes, it is specified as formaldehyde-free.
Q: How much area does one package cover?
A: Coverage is 68.942 sq ft per package.
Quiet luxury starts behind the walls.
Think of this as the invisible couture of a well-finished home—R-21 fiberglass batts that refine comfort with a hush and a steady, enveloping warmth. The kraft facing adds a purposeful layer of protection, quietly managing moisture where craftsmanship matters most. Use it to elevate a 2x6 wall assembly in living spaces and bedrooms for a calmer, more insulated feel. It’s a foundational detail that makes everyday life feel undeniably more luxurious.
Upgrade your 2x6 walls with R-21 kraft-faced batts for dependable comfort, moisture control, and quieter rooms.
Original: $317.95
-70%$317.95
$95.38Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
R-21 Kraft-Faced Fiberglass Wall Batt Insulation
Johns Manville R-21 kraft-faced fiberglass batts are designed for 2x6 wood-stud walls to help improve energy efficiency and reduce noise. The kraft facing provides a built-in vapor retarder for moisture control in concealed applications like exterior walls.
Key Features:
- Sized for 2x6 Walls: 15.25-in wide batts fit 16-in on-center wood-stud framing and 8-ft wall cavities.
- Built-In Vapor Retarder: Kraft facing helps control moisture in concealed wall applications.
- Energy & Sound Control: Helps improve thermal performance and provides sound control.
- Easy Installation: Press-fit between studs and staple facing tabs to framing when needed.
- Formaldehyde-Free & Durable: Formaldehyde-free fiberglass that won’t rot or mildew and is noncorrosive to pipes and wiring.
Specifications Table:
| Specification | Details |
|---|---|
| Category | Batt Insulation |
| Insulation Type | Fiberglass |
| Faced/Unfaced | Kraft faced |
| Maximum R-Value | 21 |
| R-Value per Inch | 3.8181 |
| Width (Inches) | 15.25 |
| Length (Inches) | 93 |
| Thickness (Inches) | 5.5 |
| Coverage Area (Sq. Feet) | 68.942 |
| Stud Spacing (Inches) | 16 |
| Framing Type | Wood studs |
| Fits 2 x 6 Walls | Yes |
| Fits 2 x 4 Walls | No |
| Vapor Retardant | Yes |
| Sound Barrier | Yes |
| Formaldehyde Free | Yes |
| ENERGY STAR Certified | Yes |
| GREENGUARD Gold Certified | Yes |
| Warranty | 1-year limited |
| For Use in Walls | Yes |
| For Use in Basements | Yes |
| For Use in Crawlspaces | Yes |
| For Use in Attics | No |
| For Use in Ceilings | No |
| For Use in Floors | No |
| For Use in Garage Doors | No |
| For Use in Doors | No |
| For Use in Windows | No |
| Package Weight (lbs.) | 29.47 |
| Package Type | Multi-pack |
| Package Count | 7 |
| Total Package Quantity | 35 |
| Multi-Pack Quantity | 5 |
| Bag Dimensions (L x W x D) | 20 x 20 x 50 |
| UNSPSC | 11162400 |
Frequently Asked Questions (FAQ):
Q: What wall framing is this insulation designed for?
A: It’s designed for 2x6 wood-stud walls with 16-in on-center spacing.
Q: Does it include a vapor barrier?
A: Yes—it's kraft-faced and includes a built-in vapor retarder for moisture control.
Q: Where can I use these batts?
A: They are listed for use in walls, basements, and crawlspaces (not for attics or ceilings).
Q: Is it formaldehyde-free?
A: Yes, it is specified as formaldehyde-free.
Q: How much area does one package cover?
A: Coverage is 68.942 sq ft per package.
Quiet luxury starts behind the walls.
Think of this as the invisible couture of a well-finished home—R-21 fiberglass batts that refine comfort with a hush and a steady, enveloping warmth. The kraft facing adds a purposeful layer of protection, quietly managing moisture where craftsmanship matters most. Use it to elevate a 2x6 wall assembly in living spaces and bedrooms for a calmer, more insulated feel. It’s a foundational detail that makes everyday life feel undeniably more luxurious.
Upgrade your 2x6 walls with R-21 kraft-faced batts for dependable comfort, moisture control, and quieter rooms.
