SKU: 64676239078

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

Sale price$67.16 Regular price$74.62
Save 10%

Pay in installments of $18.66 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 27 - Aug 1

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

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

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 barrier—ideal 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 won’t 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/Unfaced Unfaced
For Use in Attics Yes
For Use in Basements Yes
For Use in Ceilings Yes
For Use in Floors Yes
For Use in Crawlspaces No
For Use in Walls No
For Use in Doors No
For Use in Duct No
For Use in Electrical 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 Windows No
Formaldehyde Free Yes
Framing Type Wood studs
Insulation Type Fiberglass
Maximum R-Value 30
R-Value per Inch 2.9268
Sound Barrier Yes
Stud Spacing (Inches) 16
Vapor Retardant No
ENERGY STAR Certified Yes
GREENGUARD Gold Certified Yes
Warranty 1-year limited
Package Weight (lbs.) 22.8
Bag Dimensions (L x W x D) 16.5 x 20 x 50
Package Type Multi-pack
Package Count 11
Multi-Pack Quantity 4
Total Package Quantity 44
UNSPSC 11162400

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. It’s a simple, luxe step toward a calmer, more efficient home.


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

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
SKU: 64676239078

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.4 ★★★★★
Based on 19 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
J
Verified Purchase
johanna
Chelsea, US
★★★★★ 5
Tonico
Me gustó mucho, promete lo que dice y tiene buenos ingredientes y es grande
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 27, 2026
S
Verified Purchase
Solange
Grantham, US
★★★★★ 5
Gentle, Effective Face Cleanser That Leaves Skin Feeling Fresh
Size: 4.4 Fl Oz (Pack of 1)
I’ve been using this face cleanser for a few weeks, and I’m really happy with the results. It’s gentle on my skin but still does a great job removing dirt, oil, and makeup without leaving any residue or dryness. My skin feels clean, soft, and refreshed after every wash. The formula lathers nicely and rinses off easily, which makes the whole cleansing routine feel like a treat. I also appreciate that it doesn’t irritate my sensitive skin or cause redness, which some cleansers tend to do. Plus, the subtle scent is pleasant but not overpowering. Overall, this face cleanser strikes a perfect balance between deep cleansing and moisturizing. It’s become a staple in my skincare routine, and I’d definitely recommend it to anyone looking for a reliable daily cleanser.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 10, 2025
M
Verified Purchase
Mimi
Waukegan, US
★★★★★ 5
Acné saver !!!
Size: 4.4 Fl Oz (Pack of 1)
I use this product twice a day. I love how it helps keep my skin clear while also improving the blemishes currently there. Lathers well under water and doesn’t have a sticky after feeling. I think it works great especially with how lightweight is is.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 19, 2026
I
Verified Purchase
Isaac Devereux
Pawtucket, US
★★★★★ 5
Effective for blemish-prone skin without over drying
Size: 4.4 Fl Oz (Pack of 1)
I have skin that is both sensitive and oily/blemish prone, and I have found this to be very effective without being irritating or over drying. The consistency is a little syrupy which is very helpful in the shower or when dispensing onto wet hands at the sink. I feel like a lot less ends up wasted. More slippery gels can be harder to apply or even dispense since they have a tendency to well, slip off the hand and down the drain before making it to the skin. A little goes a long way and (in conjunction with a good moisturizer!) it seems to help loosen black heads and sebum plugs better than a lot of other products I have tried. It does take a little more effort to rinse it off thoroughly, but that also means it can work well in lieu of a separate shaving gel, which I appreciate. I like the mild citrusy scent. I smell it while I am using it but it doesn’t linger overly after being rinsed off. I used that generic yellow salicylic acid cleanser for a long time and this is much nicer without being overly pricey. I would say it compares very favorably with other more high end cleansers I have tried in terms of quality and effectiveness, so it is a pretty good value.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 27, 2025
C
Verified Purchase
C.Usner
Grantham, US
★★★★★ 5
👍🏻
Size: 4.4 Fl Oz (Pack of 1)
Works great and has a wonderful lather
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 25, 2026

recommand products