SKU: 38490900518

Johns Manville Attic Protector R-19 Fiberglass Blown-In Insulation, Sound Barrier, 109-sq ft Coverage per 25.2-lb Bag

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Description

Johns Manville Attic Protector R-19 Fiberglass Blown-In Insulation, Sound Barrier, 109-sq ft Coverage per 25.2-lb BagR 19 Fiberglass Blown In Attic Insulation, 109 sq ft Bag Johns Manville Attic Protector is a formaldehyde free, loose fill fiberglass insulation designed for attics, ceilings, and other open cavities. Each 25. 2 lb bag delivers R 19 thermal performance with sound barrier benefits and 109 sq ft coverage, helping improve home energy efficiency and comfort. Key Features: Formaldehyde Free Fiberglass: Low emitting, GREENGUARD Gold certified loose fill for

R-19 Fiberglass Blown-In Attic Insulation, 109-sq ft Bag

Johns Manville Attic Protector is a formaldehyde-free, loose-fill fiberglass insulation designed for attics, ceilings, and other open cavities. Each 25.2-lb bag delivers R-19 thermal performance with sound barrier benefits and 109-sq ft coverage, helping improve home energy efficiency and comfort.


Key Features:

  • Formaldehyde-Free Fiberglass: Low-emitting, GREENGUARD Gold certified loose-fill for healthier indoor air.
  • Easy Blown-In Installation: Use with an insulation blowing machine; can be applied over existing insulation.
  • Energy Efficiency Upgrade: Provides R-19 thermal performance to help reduce heating and cooling costs.
  • Sound Control: Sound barrier properties help dampen noise between living spaces.
  • Certified Performance: ENERGY STAR partner product with SCS recycled content certification and 1-year limited warranty.

Specifications Table:

Specification Details
Series Name Attic Protector
Insulation Type Fiberglass
Maximum R-Value 19
R-Value per Inch 2.67
Coverage Area (Sq. Feet) 109
Package Weight (lbs.) 25.2
Bag Dimensions (L x W x D) 38-in x 9-in x 19-in
Formaldehyde Free Yes
Sound Barrier Yes
Vapor Retardant No
ENERGY STAR Certified Yes
GREENGUARD Gold Certified Yes
SCS Recycled Content Certification Yes
Warranty 1-year limited
For Use in Attics Yes
For Use in Ceilings Yes
For Use in Walls No
For Use in Floors No
For Use in Basements No
For Use in Crawlspaces No
Fits 2 x 4 Walls No
Fits 2 x 6 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
CA Residents: Prop 65 Warning(s) No
UNSPSC 30141500

Frequently Asked Questions (FAQ):

Q: How is this insulation installed?
A: It is loose-fill fiberglass designed to be blown in using an insulation blowing machine; follow bag instructions and attic rulers for depth.


Q: Can it go over existing insulation?
A: Yes, it can be installed on top of existing insulation to increase overall R-value.


Q: Where can I use it?
A: It’s intended for attics and ceilings; not for walls, floors, crawlspaces, doors, ducts, or masonry.


Q: Is it safe for indoor air quality?
A: Yes—it's formaldehyde-free and GREENGUARD Gold certified for low chemical emissions.


Q: What coverage will I get per bag?
A: Each 25.2-lb bag covers approximately 109 square feet at R-19 when installed to the specified depth.


Cocoon Your Home in Quiet, Efficient Comfort

This airy, snowlike fiberglass transforms an attic into a high‑performing envelope, softening acoustics and elevating the feel of the entire home. I love its clean, formaldehyde‑free composition—an elegant solution that improves comfort without visual clutter. Layer it over existing insulation for an instant upgrade, then finish with crisp attic rulers and tidy access points for a polished look. It’s a discreet essential for luxe, energy‑wise living.


Boost comfort and cut energy costs—add Attic Protector to your cart and upgrade your home 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: 38490900518

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4.5 ★★★★★
Based on 30 reviews
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K
Verified Purchase
Kelsey
Grantham, US
★★★★★ 3
Good, soft, plush
Color: Grey, Size: 74"x90"
Big and fluffy and soft... But could have been softer and more plush. Overall good buy though.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 27, 2026
C
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Claire K
Boise, US
★★★★★ 5
VERY HAPPY
Color: Brown, Size: 74"x90"
Very beautiful nice weight , it’s looks bigger than I expected .. I can use it has a blanket on my king size or a nice cover and protect for my leather sofa I love it and I really recommend this beautiful blanket/ trow .. just buy it yo won’t disappointed Thank you Amazon !!!!
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Reviewed in the United States on May 24, 2026
T
Verified Purchase
Tami Gibbins
Los Angeles, US
★★★★★ 5
Throw
Color: 01 - White, Size: Throw (50" X 60")
So very pretty, do plush !!$
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Reviewed in the United States on May 13, 2026
A
Verified Purchase
Amazon Customer
Pawtucket, US
★★★★★ 4
Nice
Color: 01 - White, Size: King (108" X 90")
This blanket is generously sized and soft. I deducted one star because a small portion of the furry side came out matted after washing. It isn't really noticeable but something to be aware of. Probably best dried on low heat.
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Reviewed in the United States on May 17, 2026
L
LB
Waukegan, US
★★★★★ 5
Not ultra dense, but very soft and cozy
Color: 03 - Beige, Size: Throw (50" X 60")
This is a really nice throw. It’s very soft and cozy, and for the price, I think it’s a great value. I like the sewn-in label too. It gives it a slightly more high-end look compared to the more generic fuzzy blankets you see everywhere now. The texture is a little different from some faux fur blankets I’ve had. It’s not that super dense, ultra-short type where you can’t really see the fibers. This one has a bit more length to the pile, so you can see the strands more. It’s more like a thicker but slightly airy kind of softness, and it’s really nice on my skin. It’s really, really cozy to snuggle up with. 👋 One thing I always recommend with blankets like this—no matter the brand—is do not put it in the dryer. Even on low, the heat and tumbling will start to change the texture. If you want it to stay as soft as it is when you first get it, wash it gently and let it air dry. The reason is all faux fur is made from very fine synthetic fibers (basically plastic). Even low heat and the tumbling action can cause those fibers to start to stiffen, flatten, or slightly melt together over time. Once that happens, it loses that soft, fluffy texture and you can’t really get it back. I think this would make a great gift, and it’s hard to find a faux fur blanket this soft at this price point. Five stars! ⭐️⭐️⭐️⭐️⭐️
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Reviewed in the United States on May 2, 2026

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