KN Jetstream ultra
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Knauf Jetstream Ultra Blowing Wool

SKU: KN3646

Est Delivery between and .

Estimated Delivery Time 5-7 Working Days

Our flagship product for weatherizing and retrofitting existing buildings or new construction. This insulation provides consistent thermal resistance against outdoor air and helps maintain indoor temperatures. Greater air resistance means better temperature control. This premium product is BIBS approved. Made with recycled glass, it’s the smarter way to stand up to the cold.

Key Features:

  • Excellent Thermal Performance
  • Fills all gaps and voids, creating a thermal barrier against outside air and better temperature control


  • Attics
  • Walls
  • Floor
  • Mid-Floor
  • Metal Building
  • Ceiling
            Brand Knauf
            Combustibility Non-combustible
            Critical Radiant Flux Greater than 0.12 W/cm²

            Est Delivery between and .

            Delivery will always take place on a weekday (Mon - Fri).
            For information on delivery costs and more view our delivery info page.