20% OFF shipping at muk-zwingenberg.de on orders over $79 + up to 10% OFF products
muk-zwingenberg.de
home > Johns Manville R-38 Attic Unfaced Fiberglass Batt Insulation, 48-sq ft Coverage (16-in W x 48-in L) > Johns Manville R-38 Attic Unfaced Fiberglass Batt Insulation, 48-sq ft Coverage (16-in W x 48-in L)
download picture
Johns Manville R-38 Attic Unfaced Fiberglass Batt Insulation, 48-sq ft Coverage (16-in W x 48-in L)R 38 Unfaced Fiberglass Attic Batt Insulation, 48 sq ft Formaldehyde free Johns Manville unfaced fiberglass batts deliver R 38 thermal performance for attics, ceilings and floors. Pre cut to fit 16 in on center wood studs, these durable batts improve energy efficiency and help reduce noise without a vapor barrier. Key Features: High R Value Performance: R 38 thermal resistance boosts energy efficiency in attics and ceilings Unfaced Convenience: No
Shopping security

Shopping security

Each payment you make on thelockerguy is secured with strict SSL encryption and PCI DSS data protection protocols

R-38 Unfaced Fiberglass Attic Batt Insulation, 48 sq ft

Formaldehyde-free Johns Manville unfaced fiberglass batts deliver R-38 thermal performance for attics, ceilings and floors. Pre-cut to fit 16-in on-center wood studs, these durable batts improve energy efficiency and help reduce noise without a vapor barrier.


Key Features:

  • High R-Value Performance: R-38 thermal resistance boosts energy efficiency in attics and ceilings
  • Unfaced Convenience: No vapor barrier—ideal for layering over existing insulation
  • Pre-Cut Fit: 16-in x 48-in batts sized for standard 16-in OC wood framing; 48-sq ft per bag
  • Indoor Air Quality: Formaldehyde-free and GREENGUARD Gold certified
  • Durable & Easy to Install: Will not rot or mildew; simple press-in-place installation

Specifications Table:

Specification Details
Insulation Type Fiberglass
R-Value R-38
Faced/Unfaced Unfaced
Width (Inches) 16
Length (Inches) 48
Thickness (Inches) 12
Coverage Area (Sq. Feet) 48
Stud Spacing (Inches) 16
Framing Type Wood studs
For Use in Attics Yes
For Use in Ceilings Yes
For Use in Floors Yes
For Use in Walls No
Formaldehyde Free Yes
Sound Barrier Yes
Vapor Retardant No
ENERGY STAR Certified Yes
GREENGUARD Gold Certified Yes
Package Weight (lbs.) 26.15
Bag Dimensions (L x W x D) 20 x 20 x 50
R-Value per Inch 3.1667
Package Type Multi-pack
Package Count 9
Multi-Pack Quantity 4
Total Package Quantity 36
Warranty 1-year limited
UNSPSC 11162400

Frequently Asked Questions (FAQ):

Q: How much area does one bag cover?
A: Each bag covers 48 square feet with pre-cut 16-in x 48-in batts.


Q: Can I add these batts over existing insulation?
A: Yes. Because they are unfaced (no vapor barrier), they can be layered over existing insulation in attics.


Q: Where can this be used?
A: Designed for wood-framed attics, ceilings and floors; not intended for walls or masonry.


Q: What certifications does it have?
A: Formaldehyde Free and GREENGUARD Gold certified; ENERGY STAR partner product.


Q: What is the thickness of each batt?
A: Approximately 12 inches thick to achieve R-38.


Crisp, Quiet Comfort for Elevated Attics

This pristine, snow-white insulation layers your attic with a serene hush, refining the home from the top down. Its lofty 12-inch profile delivers a tailored, architectural neatness as it tucks cleanly between joists. Pair with matte-black hardware and pale wood decking for a modern, gallery-like attic storage zone. It’s a discreet essential that elevates comfort and signals sophisticated, energy-savvy living.


Upgrade your attic with JM R-38 batts today and lock in quieter, more energy-efficient comfort year-round.

Johns Manville R-38 Attic Unfaced Fiberglass Batt Insulation, 48-sq ft Coverage (16-in W x 48-in L)

Item no : 59291921165
sold recently : Login >>
US$ 67.74
Pay in 4 interest-free payments of $16.93 Learn more
Min. order: 1piece

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jun 23 - Jun 28

Enjoy 20% off shipping

US$ 67.74

1-11

US$ 60.97

12-35

US$ 47.42

36-59

US$ 40.64

60+

US$40

Get now

Sign up to your membership to get coupons up to

15%

Get now

Opportunity to enjoy order discount up to 15% off

Please add the products
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

recommand products

Related Searches