• Glass Mineral Wool Blowing Insulation Attics

    Energy Savings, Improved Comfort


Glass Mineral Wool Blowing Insulation for Attics

Jet Stream® MAX Glass Mineral Wool Blowing Insulation

Knauf Insulation Jet Stream® MAX glass mineral wool Blowing Insulation is an unbonded, virgin fibrous glass blowing insulation designed with optimal thermal properties in addition to excellent coverage and blowing characteristics.

Knauf Insulation Jet Stream MAX glass mineral wool blowing insulation is installed in open attics of both new and existing structures and/or in closed cavity applications.Loose fill blowing insulation is intended for use where pneumatically installed insulation is most cost-effective.

Thermal Performance

Jet Stream MAX 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 sq. ft. 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.

Glass Mineral Wool and Mold

Glass mineral wool insulation will not sustain mold growth. However, mold can grow on almost any material when it becomes wet and contaminated. Carefully inspect any insulation that has been exposed to water. If it shows any sign of mold, it must be discarded. If the material is wet, but shows no evidence of mold, it should be dried rapidly and thoroughly.

Features and Benefits

  • Fills all gaps and voids, creating a thermal barrier against outside air and better temperature control.
  • Resists heat flow with an R-value of R15 in 2x4 construction.
  • Resists heat flow with an R-value of R-24 in 2x6 construction.
  • Improves Sound Transmission Class (STC) ratings by 4 to 10 points.
  • Will not rot, mildew or deteriorate.
  • Reduces fuel usage and utility bills for heating and air conditioning.
  • Non-combustible, non-corrosive.
  • Sustainable. Minimum 61.9% post-consumer recycled glass content.
  • Each bag contains the equivalent of over 47 recycled bottles, with a minimum of 61.9% post- consumer recycled glass content.
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