R-19 Unfaced Fiberglass Roll Insulation, 15-in x 39.16-ft

Improve thermal performance and sound control with Johns Manville R-19 unfaced fiberglass roll insulation. Sized for 2x6 wood-stud walls and long runs with 16-in on-center spacing, each roll covers 48.96 sq ft and installs easily by pressing in place.

Key Features:

• Energy Efficiency + Sound Control: R-19 fiberglass helps reduce heat loss and unwanted noise in walls and floors
• Sized for 2x6 Walls: 15-in width fits 16-in on-center wood studs for long, unobstructed bays
• Unfaced Design: No vapor retarder—ideal for adding over existing insulation where needed
• Healthy Home Certifications: GREENGUARD Gold and SCS certified; formaldehyde-free
• Durable and Easy to Install: Won’t rot, mildew, or corrode pipes and metal; simply press in place

Specifications Table:

Frequently Asked Questions (FAQ):

Q: How much area does one roll cover?
A: Each roll covers 48.96 square feet (15 in. wide x 39.16 ft. long).

Q: Is this insulation faced?
A: No. It is unfaced and does not include a vapor retarder.

Q: What wall framing is it designed for?
A: It’s sized for 2x6 wood-stud walls with 16-in on-center spacing.

Q: Can it be used for sound control?
A: Yes. It provides sound control in addition to thermal performance.

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

A Quiet, Cozy Backbone for Modern Walls

This R-19 fiberglass roll tucks neatly into 2x6 stud bays, wrapping rooms in a soft hush and steady comfort. I love its unfaced profile—clean, minimal, and adaptable when layering for performance. Pair it with crisp drywall and a serene paint palette to let textures and furnishings sing without echo. It’s an understated essential that elevates living with quiet luxury and energy-wise design.

Upgrade your walls with R-19 performance today and enjoy quieter, more efficient comfort year-round.