R-30 Unfaced Fiberglass Roll Insulation, 15-in x 25-ft

Boost attic efficiency with Johns Manville R-30 unfaced fiberglass roll insulation. Each 15-in x 25-ft roll covers 31.25 sq ft and is designed for 16-in on-center joists, delivering thermal performance and sound control without a vapor barrier.

Key Features:

• High Thermal Performance: R-30 fiberglass roll helps reduce heat loss and improve energy efficiency in attics and ceilings.
• Unfaced Design: No vapor barrier—ideal for adding over existing insulation where moisture control is managed elsewhere.
• Easy to Install: Sized for 16-in on-center wood studs; simply press in place between joists.
• Durable, Safe Materials: Formaldehyde-free fiberglass that won’t rot, mildew, or corrode pipes and wiring; GREENGUARD Gold certified.
• Sustainability Credentials: SCS Recycled Content certification and ENERGY STAR partner alignment.

Specifications Table:

Frequently Asked Questions (FAQ):

Q: How much area does one roll cover?
A: Each roll covers 31.25 sq ft (15 in. wide x 25 ft. long).

Q: Is a vapor barrier included?
A: No. This is unfaced insulation and does not include a vapor retarder.

Q: Where is this product best used?
A: Designed for attics and ceilings in wood-framed construction with 16-in on-center spacing.

Q: What is the roll thickness?
A: Approximately 9.25 inches thick to achieve R-30.

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

A Cloud-Soft Layer of Quiet, Cozy Performance

This plush, alabaster roll lays down like a whisper, instantly elevating an attic into a cocoon of calm and comfort. Its unfaced profile keeps the look clean while delivering steadfast R-30 performance that quiets and insulates. Pair it with warm wood tones and matte-black hardware for a crafted, modern envelope. It’s the invisible luxury that makes every room feel composed and beautifully livable.

Upgrade your attic with R-30 performance today and start saving on energy bills season after season.