Heatlok XT High Yield

Heatlok® XT High Yield is our high-performing, versatile spray foam insulation for commercial and residential construction creates a specialized engineered building envelope, which provides better thermal resistance, an excellent air barrier, and a recognized vapor retarder.

  • >20% recycled & renewable content
  • Up to 10 LEED points*
  • 0-5 flame spread based on ASTM E-84
  • Interior and exterior applications
  • Multiple formulas for varying temperatures

*Depending on job distance from manufacturer.

Our eco-friendly, high-yield Heatlok® XT incorporates >20% recycled plastic and renewable oils to create a high performing, closed-cell spray foam insulation. Heatlok XT combines sustainability with an easier to spray, high yield product.

  • "We enjoy the benefits of Demilec as a thermal barrier, air intrusion barrier and as a sound attenuation material. We plan on being a Demilec customer for many years to come."

    - Robert D. Massaro | CEO, Healthy Buildings, USA
  • "Demilec’s hands-on approach, trouble-shooting capabilities, and preventative maintenance process anchors their industry-leading tech service."

    - Eric DeMars | Lead Spray Foam Applicator, Custom Drywall, Inc.
  • "Your Heatlok Soy® 200 Plus is awesome. My guys and I tried at least five other brands, but Heatlok is the best. It is less sticky on the cap and does not clog as much as other brands."

    - Scott McLean | Operations Manager, Good Life Energy Savers, Danbury , CT
  • "We are extremely impressed with the exceptional performance of your product and would highly recommend it to anyone considering utilizing spray foam in their home."

    - Ruth O. | Slidell , LA
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