R-13 Kraft-Faced Fiberglass Roll Insulation, 40-sq ft

Johns Manville R-13 kraft-faced fiberglass roll insulation is designed for 2x4 wood-framed walls, delivering thermal performance with built-in vapor retarder. Each 15-in by 32-ft roll covers 40 sq ft and helps improve energy efficiency and sound control.

Key Features:

• Optimized for 2x4 Walls: 15-in width fits 16-in on-center studs for fast installation
• Moisture Control: Kraft-faced vapor retarder helps manage indoor humidity
• Energy & Sound Performance: R-13 fiberglass reduces heat loss and dampens noise
• Easy to Install: Press in place; staple tabs as needed for secure fit
• Healthy Home Certifications: Formaldehyde-free, GREENGUARD Gold and SCS certified

Specifications Table:

Frequently Asked Questions (FAQ):

Q: What areas is this insulation intended for?
A: It is designed for use in 2x4 wood-framed walls with 16-in on-center stud spacing; not for attics or ceilings.

Q: How much area does one roll cover?
A: Each roll covers 40 square feet (15-in W x 32-ft L).

Q: Is a vapor barrier included?
A: Yes, the kraft facing acts as a built-in vapor retarder for moisture control.

Q: Is it safe for indoor air quality?
A: Yes, it is formaldehyde-free and GREENGUARD Gold and SCS certified.

Q: What is the R-value?
A: R-13, with an approximate R-value per inch of 3.71.

Quiet Comfort, Clean Lines

This kraft-faced roll tucks seamlessly into 2x4 framing, wrapping walls in a whisper of warmth and hush. I love the tailored paper face—it creates a neat, uniform backdrop during build-out. Pair it with crisp drywall and matte black hardware for a refined, sound-softened envelope. It’s an effortless upgrade that sets the tone for elevated, livable luxury.

Upgrade your 2x4 walls with R-13 comfort and moisture control—add this Johns Manville roll insulation to your project today.