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Fiberglass batt insulation

Johns Manville R-30 Unfaced Fiberglass Batt Attic Insulation, 58.66-sq ft Coverage (16-in W x 48-in L)

★★★★★  5.0

In Stock

$74.62

$37.31

Quantity:

SKU: A143392435

Product Detail

Description

R-30 Unfaced Fiberglass Batt Attic Insulation

Formaldehyde-free fiberglass batts designed for attics deliver R-30 thermal performance with sound control. Precut to fit 16-in on-center wood stud cavities, each bag covers 58.66 sq ft for efficient energy upgrades.

Key Features:

  • High R-Value Performance: R-30 thermal insulation helps reduce energy costs and improve comfort
  • Unfaced Design: No vapor barrierideal for adding over existing insulation layers
  • Precut for Easy Fit: 16-in x 48-in batts press in place between joists for quick installation
  • Durable, Safe Material: Fiberglass wont rot or corrode; formaldehyde-free and GREENGUARD Gold Certified
  • Sound Control: Helps dampen noise in attics and living spaces

Specifications Table:

Specification Details
Coverage Area (Sq. Feet)58.66
Length (Inches)48
Width (Inches)16
Thickness (Inches)10.25
Faced/UnfacedUnfaced
For Use in AtticsYes
For Use in BasementsYes
For Use in CeilingsYes
For Use in FloorsYes
For Use in CrawlspacesNo
For Use in WallsNo
For Use in DoorsNo
For Use in DuctNo
For Use in ElectricalNo
For Use in Garage DoorsNo
For Use in MasonryNo
For Use in PlumbingNo
For Use in VentsNo
For Use in WindowsNo
Formaldehyde FreeYes
Framing TypeWood studs
Insulation TypeFiberglass
Maximum R-Value30
R-Value per Inch2.9268
Sound BarrierYes
Stud Spacing (Inches)16
Vapor RetardantNo
ENERGY STAR CertifiedYes
GREENGUARD Gold CertifiedYes
Warranty1-year limited
Package Weight (lbs.)22.8
Bag Dimensions (L x W x D)16.5 x 20 x 50
Package TypeMulti-pack
Package Count11
Multi-Pack Quantity4
Total Package Quantity44
UNSPSC11162400

Frequently Asked Questions (FAQ):

Q: How much area does one bag cover?
A: One bag covers 58.66 square feet with 11 precut pieces sized 16 in x 48 in.

Q: Can I install this over existing insulation?
A: Yes. As an unfaced batt without a vapor barrier, it can be layered over existing insulation where appropriate.

Q: What framing does it fit?
A: Designed for 16-in on-center wood stud or joist spacing in attics and ceilings.

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

Q: Where can it be used?
A: For use in attics, ceilings, basements, and floors; not intended for walls or crawlspaces.

A quiet, cozy attic upgrade with effortless precision

These pristine, unfaced batts slip neatly between joists, instantly dialing up comfort while softening household noise. The generous 10.25-in loft and R-30 rating create a plush thermal blanket that feels tailor-made for 16-inch spacing. Layer them to build a serene envelope above bedrooms, then finish with clean access panels for a refined look. Its a simple, luxe step toward a calmer, more efficient home.

Upgrade your attic with R-30 comfortadd Johns Manville batts to boost efficiency and quiet today.

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