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Whether you need the dry blow-in insulation that’s perfect for most attics, one of the specialty formulas, or even insulation for agricultural use, you can always count on Greenfiber’s cellulose for the best results.

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INS541LD Blended Blow-In Insulation

Great for DIY or smaller contractor use, this bag is easy to carry and perfect for rental or small-sized machines. The economical blended formula is ideal for any dry blow-in applications like attics and can also be dry blown into walls and floors. The blend is specially treated for harsh climates.

Bag Size:
19 lbs.

R-13 to R-60

40-sq ft per bag at R-19

Product Features

Ideal for attic blow-in installations. Creates a thermal blanket that fills gaps and voids to reduce air infiltration, keeping your home warm in the winter and cool in the summer. Can be applied over existing insulation or in new construction. Provides superior reduction of noise transfer through floors and walls when densely packed into attics and sidewalls. Meets US Department of Energy's (DOE) recommendations for reducing energy costs. Fire-resistant treated insulation is made with up to 85% recycled material that meets Class 1 Fire Rating to protect your home, giving you more time to evacuate in the event of a fire. Low dust, no-itch formula requires no cutting tools, allowing for simple installation in just 3 steps: 1) assemble machine, 2) place machine on flat, dry surface, and 3) point and blow-in.


  • Coverage Area (Sq. Feet): 40
  • Package Weight (lbs): 19.05
  • ENERGY STAR Certified
  • Formaldehyde Free
  • Limited Lifetime Warranty
  • R-Value per Inch: 3.7
  • Maximum R-Value: 60
  • Insulation Type: Cellulose
  • Fits 2 x 4 Walls
  • Fits 2 x 6 Walls
  • For Use in Attics
  • For Use in Ceilings
  • For Use in Crawl Spaces
  • For Use in Walls
  • Sound Barrier