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R49 Kraft Faced 16 in. x 48 in. Precut Fiberglass Insulation Batts for Attic - Sound-Reducing and Made in USA (1-Bag)
- R-49 faced fiberglass insulation pre-cut for ceilings & attics
- Provides temp. control, sound absorption and moisture mitigation
- Formaldehyde-free, asthma and allergy friendly certified
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About This Product
Knauf R-49 EcoBatt Kraft faced fiberglass insulation with ECOSE Technology is a leading sustainable insulation. All of our batts are bonded with the revolutionary, industry-transforming, plant-based ECOSE Technology. They are validated by UL Environment as formaldehyde-free, and they contain no Red List chemicals. Made with a high degree of recycled glass, our insulation batts are pre-cut to install quickly and easily with low dust and low hassle. Our kraft facing is durable, resists tears, and is marked in 1 ft. increments to streamline installation. And like every Knauf Insulation batt, EcoBatt is resilient and recovers quickly out of the package for a snug fit. Install Knauf Insulation in your home and stay comfortable year. (Recommended use includes vaulted ceilings and attic spaces.)
Highlights
- R-49 insulation is best used for application in attics
- Each R-38 fiberglass insulation batt is 13.75 in. D x 16 in. W x 48 in. L
- Each individual bag covers 32 sq. ft. of R-49 insulation
- R-49 R-value improves personal comfort in your home or office
- R-49 insulation has high-quality materials made of resilient fibers for more energy efficiency
- Installation made fast and easy using pre-cut, softer to the touch insulation that has durable kraft facing marked in 1 ft. increments with stapling flange where cutting and splitting is simple with low dust
- R-49 insulation compression packaging fits more product in every bag and is designed to last the life of the structure
- Knauf fiberglass insulation provides superior thermal and sound control performance that improves comfort, privacy and productivity
- Kraft vapor retarder helps prevent water vapor from condensing to liquid water within the cavity and has a vapor transmission (permeance) rating of 1.0 or less. Kraft facing will burn and should not be left exposed
- Reduces heating and cooling bill by preventing outside air from entering and keeping controlled air inside
- Fiberglass insulation minimizes insect intrusions by covering areas of entry
- All Knauf fiberglass insulation is GREENGUARD Gold certified, free of red list chemicals and formaldehyde
- Learn All About Insulation R-Values here.
- Learn more about the various Types of Insulation here.
- Click here to learn more about Eco Options and Energy Efficiency
- Return Policy
Product Information
Additional Resources
Shop All Knauf InsulationSpecifications
Dimensions
Coverage Area (sq. ft.) | 32 sq ft |
|---|---|
Product Length (ft.) | 4 ft |
Product Thickness (in.) | 13.75 in |
Product Width (in.) | 16 in |
Details
Bag Size | 4 ft. x 17 in. x 16 in. |
|---|---|
Batt/Roll Size | 4 ft. x 16 in. |
Compatible Install Surface | Concrete, Existing Drywall, Metal, Plywood, Wood |
Faced or Unfaced | Faced |
Fits Size | Other |
Insulation Features | Condensation Control, Formaldehyde Free, Friction Fit, Mold Resistant, Pre-Cut, Vapor Retardant |
Insulation Location | Attic |
Insulation R-Value | R49 |
Insulation Type | Batt |
Pack Size | 1 |
Product Weight (lb.) | 28.4 lb |
Returnable | 90-Day |
Roll or Batt | Batt |
Questions & Answers
How much a piece?
There are 10 batt pieces in each bag. Take the cost on homedepot.com and divide by 10 and you will get the price per batt piece.
Will the addition of R-19 Ecobatt insulation to our encapsulated crawlspace cause enough “offgassing” to be considered a health risk, no matter how small. There is an exhaust fan in the crawlspace designed to remove “soil gases” from the space.
No. I just installed mine and notice a slight 'burnt sugar' smell, which is from the formaldehyde-free binder now used. It's apparently made from maltodextrin and will dissipate quickly, especially with a fan.
Since this is unfaced and does not provide another layer of moisture barrier, could I use this as cavity insulation with faced foam board on concrete wall in a basement?
Yes, you may install it with a foam board.
Can I use this to insulate a basement that already has a moisture barrier installed?
You should not use a double a moisture barrier as this may cause condensation. We would recommend unfaced insulation or you may slit the kraft paper every 6 inches which would negate the moisture retarder on the insulation.
Is this insulation fire retardant and up to how much or how long?
Kraft faced insulation is not a fire retardant due to facing on the material. You may use unfaced insulation and that will meet ASTM E84. You may also see faced vs unfaced insulation information at www.knaufnorthamerica.com/en-us/blog/faced-vs-unfaced.
Is the formaldehyde in safe?
Knauf Insulation is made with Ecose technology, and our products are validated formaldehyde free. Knauf Insulation is certified to the toughest indoor air quality certification in the industry, GREENGUARD Gold.
What insulation is fire proof.for walls.
Insulation is rated for surface burning characteristics by a test to explore how the material will contribute to flame spread in the event of fire. All fiberglass insulation must pass ASTM E84, unfaced insulation is rated as Class 1 or Class A with a flame spread of 0-25 and Smoke Development of 0-450. Unfaced insulation has the highest rating. Kraft faced is a Class 3 or Class C rating with Flame Spread of 76-200 and Smoke Develpment of 0-450. Kraft facing does burn and that is why it is listed as a Class 3.
The attic floor has 2x6 studs, spaced 16 inches apart. Is this the correct batt? If not, then can you point me to the correct product please?
This material may be installed in an attic installation, if there is at least an air gap of at least 1" from roof deck.
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