Knauf Insulation Jet Stream® ULTRA Glass Mineral Wool Blowing Insulation is an unbonded, virgin fibrous glass blowing insulation designed with optimal thermal properties and excellent coverage and blowing characteristics.

Knauf Insulation Jet Stream ULTRA Glass Mineral Wool Blowing Insulation is installed in open attics of both new and existing structures and/or in closed cavity applications with the BIBS system (Blow-in-Blanket System). Jet Stream ULTRA, when used in closed cavity applications is BIBS approved and can only be installed by BIBS certified installers to ensure the highest quality installed performance. Jet Stream ULTRA is an excellent product for Blow-in-Blanket applications. It will dense-pack in wall cavities with no settling.

Jet Stream ULTRA Blowing Insulation provides you with a choice of R-values based on the installed thickness and installed weight per square foot. The tables to the right show the minimum requirements for obtaining the desired R-value.

The stated thermal resistance (R-value) is provided by installing the required number of bags per 1,000 ft² of net area, at not less than the labeled minimum thickness (per the manufacturer’s instructions). Failure to install both the required number of bags and at least the minimum thickness will result in lower insulation R-values.

Field blending of this product with other loose fill insulation or application of this product in conjunction with adhesive or binder systems may affect its thermal performance and is not recommended by the manufacturer.

Features

• Excellent Thermal Performance
  
  • Fills all gaps and voids, creating a thermal barrier against outside air and better temperature control, reducing fuel usage and utility bills
  • Resists heat flow with an R-value of
    
    • R-15 in 2 x 4 construction
    • R-23 in 2 x 6 construction
• Convenient - One product, one inventory, two applications
• Energy Conservation - Reduces fuel usage and utility bills for heating and air conditioning
• Sustainable - Has a high degree of recycled content
• Noise Reduction - Improves Sound Transmission Class (STC) ratings by 4 to 10 points
• Installation - Blows fast and smooth
• Permanence
  
  • Non-combustible, non-corrosive
  • Will not rot, mildew or deteriorate