R-38 Unfaced Fiberglass Batt Insulation for Attics

Formaledehyde-free fiberglass batts deliver R-38 thermal performance for attics and cathedral ceilings. Pre-cut 48-in lengths fit 24-in on-center framing and provide 63.33 sq ft of coverage per pack.

Key Features:

• High R-Value Performance: R-38 insulation boosts energy efficiency and comfort
• Unfaced Design: No vapor barrier—ideal for adding over existing insulation
• Pre-Cut Convenience: 48-in batts sized for 23.75-in width cavities with 24-in stud spacing
• Durable Fiberglass: Will not rot, mildew, or corrode pipes, wiring, or metal studs
• Low Emissions Certifications: GREENGUARD Gold and SCS Recycled Content certified

Specifications Table:

Frequently Asked Questions (FAQ):

Q: How much area does one pack cover?
A: Each pack provides 63.33 square feet of coverage.

Q: Can I install this over existing insulation?
A: Yes, the unfaced batts can be laid over existing attic insulation where a vapor barrier is not needed.

Q: What framing spacing is this sized for?
A: These batts are designed for 24-in on-center framing with a 23.75-in cavity width.

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

Q: Where can it be used?
A: Primarily for attics and cathedral ceilings; not intended for walls or crawlspaces.

Quiet, Cozy Attics with Effortless Elegance

This R-38 batt brings a serene hush and steady comfort to upper levels, wrapping your home in a clean, minimalist layer. The slim profile is tailored for cathedral ceilings, creating a refined envelope without bulk. Pair it with soft, natural finishes—think pale woods and matte paints—to amplify its calm energy efficiency. Consider it a foundational luxury: invisible, indispensable, and beautifully effective.

Upgrade your attic with R-38 performance and start saving on energy costs today.