R-13 Kraft-Faced Fiberglass Batt Insulation (23 in. x 93 in.)

Johns Manville R-13 kraft-faced fiberglass batts are pre-cut to fit 2x4 wall cavities and help improve thermal performance while reducing noise transfer. The kraft facing provides an integrated vapor retarder to support moisture control in interior or exterior wall applications.

Key Features:

• Precut for 2x4 Walls: Sized for standard 8 ft wall cavities with 24 in on-center stud spacing (23 in x 93 in batts).
• Built-In Vapor Retarder: Kraft facing helps provide moisture control where a vapor retarder is required.
• Thermal + Sound Control: R-13 insulation helps improve energy efficiency and reduce sound transmission through walls.
• Formaldehyde-Free Fiberglass: Made with Formaldehyde-free™ fiberglass for indoor comfort-focused installations.
• Stable, Friction-Fit Installation: Designed to press-fit between framing members; can be stapled at facing flanges when needed.

Please check the Product Data Sheet Here

Specifications Table:

Frequently Asked Questions (FAQ):

Q: What wall framing does this batt fit?
A: It’s designed for 2x4 wall cavities and sized for 24 in on-center framing (23 in wide batts).

Q: What area does one bag cover?
A: One bag covers about 163.39 sq ft (coverage may be listed as 163 sq ft depending on rounding).

Q: Is this insulation faced, and what does that do?
A: Yes—it's kraft-faced, which serves as a built-in vapor retarder to help with moisture control in wall assemblies.

Q: Where can it be installed?
A: It’s commonly used in interior and exterior walls; the manufacturer listing also notes use in areas like floors, ceilings, basements, attics, and crawlspaces when appropriate for the assembly.

Q: How thick is the insulation?
A: Approximately 3.5 inches thick (typical for R-13 batts for 2x4 framing).

Quiet luxury starts behind the walls.

The most elevated rooms don’t just look serene—they feel serene. These kraft-faced R-13 fiberglass batts slip into 2x4 cavities with a tailored, precut fit, adding a hush of sound control and a calmer thermal envelope. The kraft facing brings a subtle, workmanlike precision while supporting moisture management where it matters most. It’s the invisible layer that makes everyday living feel undeniably more refined.

Upgrade comfort and quiet in your 2x4 walls with Johns Manville R-13 kraft-faced batts—precut, moisture-managing, and ready to install.

Warranty

Installation