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LENTEK™ Insulating Foam provides easy-to-use solutions for insulating gaps and cracks in nearly any situation. Our sealant fills, seals, and insulates gaps efficiently with the power of long-lasting, water-resistant, triple-expanding foam. LENTEK™ Insulating Foam provides a cost-effective solution to eliminate unwanted airflow and improve energy efficiency in any indoor space. The professional-grade sealant adheres to most common building materials and is sandable, paintable, and stainable. 



  • Triple expanding to fill, seal, and insulate gaps and cracks

  • Long-lasting, airtight, and weather-resistant seal

  • Helps keep insects, moisture/condensation, and allergens out

  • Adheres to wood, metal, masonry, glass, and most common building materials

  • Interior/exterior use

  • Paintable, stainable, and sandable

  • Cream-colored foam for easy identification

  • UL classified

  • No CFCs or HCFCs

LENTEK™ Insulating Foam Sealant

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