R-21 Unfaced Fiberglass Batt Wall Insulation

Formal­dehyde-free Johns Manville R-21 unfaced fiberglass batts deliver thermal and acoustic performance for 2x6 wood-stud walls. Precut to 15 in. x 93 in., this multi-pack covers 67.81 sq ft and installs easily between 16-in on-center studs to improve energy efficiency and sound control.

Key Features:

• Designed for 2x6 Walls: Precut 15-in x 93-in batts fit 16-in OC wood studs for fast installation
• Thermal + Acoustic Performance: R-21 value helps reduce heat loss and dampens sound transmission
• Unfaced Convenience: No vapor barrier—ideal for adding to existing insulation where needed
• Healthy Home Certifications: Formaldehyde-free, GREENGUARD Gold, and SCS recycled content certified
• Durable Fiberglass: Will not rot, mildew, or corrode pipes, wiring, or metal studs

Specifications Table:

Frequently Asked Questions (FAQ):

Q: How much area does one package cover?
A: 67.81 square feet per package.

Q: Is this insulation faced?
A: No, these are unfaced fiberglass batts without a vapor retarder.

Q: What framing is it designed for?
A: Precut for 2x6 wood-stud walls with 16-in on-center spacing.

Q: What is the thickness and R-value?
A: Batts are 5.5 inches thick with an R-21 thermal resistance.

Q: Is it certified for indoor air quality?
A: Yes—GREENGUARD Gold certified and SCS recycled content certified; also formaldehyde-free.

Quiet Strength for Modern Walls

These sleek, unfaced batts slip into 2x6 cavities like they were tailor-made, wrapping your rooms in a hush of comfort. I love the crisp, bright fibers—an understated detail that speaks to clean, contemporary builds. Pair with smooth drywall and pale oak trim to heighten the serene, gallery-like feel. It’s a quiet luxury essential—performance insulation that elevates how your home looks, feels, and lives.

Upgrade your walls with R-21 performance today and enjoy a quieter, more energy-efficient home.