Lowe's Home Improvement
Johns Manville R30 15-in x 25-ft Unfaced Fiberglass Roll Insulation with Sound Barrier

Johns Manville R30 15-in x 25-ft Unfaced Fiberglass Roll Insulation with Sound Barrier

Item #: 177781 |  Model #: B390

4.64 / 5 111 Reviews

R30 15-in x 25-ft Unfaced Fiberglass Roll Insulation with Sound Barrier

  • For use in wood-framed attics and ceilings
  • Rolls are designed for long, unobstructed spaces with 16-in on-center stud spacing
  • Unfaced/without a vapor retarder – can be added to existing insulation
  • Improves energy efficiency and provides sound control
  • JM's bio-based binder is mostly made from rapidly renewable plant-based materials, satisfying increased demand for agriculturally-sourced products
  • JM is a partner of the Seal and Insulate with ENERGY STAR program
  • SCS Recycled Content certification
  • GREENGUARD Gold Certified for office indoor air quality and SCS Certified for home indoor air quality
Series Name N/A
Width (Inches) 15
Length (Feet) 25
Thickness (Inches) 9.25
Package Weight (lbs.) 14
Coverage Area (Sq. Feet) 31.25
Vapor Retardant No
Formaldehyde Free Yes
Warranty None
R-Value per Inch 3.24
Maximum R-Value 30
Insulation Type Fiberglass
Fits 2 x 4 Walls No
Fits 2 x 6 Walls No
For Use in Crawlspaces No
For Use in Doors No
For Use in Duct No
For Use in Electrical No
For Use in Floors No
For Use in Garage Doors No
For Use in Masonry No
For Use in Plumbing No
For Use in Vents No
For Use in Walls No
For Use in Windows No
Faced/Unfaced Unfaced
ENERGY STAR Certified Yes
For Use in Attics Yes
For Use in Basements Yes
For Use in Ceilings Yes
Sound Barrier Yes

Product Documentation

Download these helpful files for this product.

  • Warranty Guide
  • Energy Guide

pdf To view these documents, you need Adobe Acrobat Reader. You can download a free copy from the Adobe web site.

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