Icynene LD-C-50

ICYNENE Classic LD-C-50® is the product that made the Icynene name synonymous with superior-quality spray foam insulation. It has been used in thousands of residential and commercial projects since 1986, consistently outperforming traditional insulation types. Classic is a one-step performance material which both insulates and air seals a building for the lifetime of the structure. Icynene Classic is guaranteed to perform as specified for the life of the building.


Performance Benefits

  • Stable thermal performance
  • R-value = 3.7 per inch
  • Superior sound control.
  • Vapour permeable, support bi-directional drying of assemblies
  • Soft, flexible composition maintains an air seal even after seasonal expansion/contraction of building assembly
  • <5% water absorption
  • Supports indoor air quality by blocking air infiltration and mass transfer of moisture that may cause mould.



  • Open-cell structure with air
  • 100% water-blown
  • Light density 0.5 lb.
  • HFC- and PBDE-free
  • Soft to touch
  • Not a vapour barrier
  • Expands ~100 times from liquid state
  • Application thickness is not limited
  • Low exothermic reaction temperature; will not harm coatings on electrical wiring, plumbing or other building components
  • Lower cost compared to closed-cell products
  • Lowest global warming potential (GWP of 1)
  • A low-emitting material (LEM) as per CHPS EQ 2.2 Section 01350 (Collaborative for High Performance Schools)


Construction Benefits

  • Yields of 16,000 to 20,000 board feet
  • Broad range of substrates, temperatures and humidity conditions
  • Superior cold temperature adhesion to multiple substrates
  • Dimensionally stable
  • 1 day occupancy
  • One formulation (no winter/summer)


Thermal Barriers

Approved thermal barriers:

  • HiBAR thermal barrier material – 1in. thickness


LEED Contributions
Icynene Classic meets prerequisites and may contribute towards these LEED for Homes points:

  • EAC1.1: Optimizing Energy Performance
  • EAC1.2: Optimizing Energy Performance
  • EAC2: Insulation
  • EAC3: Air Infiltration
  • MRC2: Environmentally Preferable Products


Can be used in many residential applications.

  • Unvented attic
  • Vented attic
  • Cathedral ceiling
  • External wall (interior cavity fill)
  • Internal wall
  • Bonus room or cantilevered floor
  • Crawl space
  • Basement wall (internal side)
  • Rim joists
  • And many more applications – find an Icynene licensed contractor to check which Icynene products can be used for your project.


Limitations of Use
Should not be used:

  • Against substrates that may exceed 70°C (158°F) at installation or in the future
  • Inside electrical outlets or junction boxes
  • Flotation purposes
  • Placed above the roofing membrane
  • Exterior surfaces, exposed and/or in contact with water


Fire Summary

  • Meets CAN/ULC S102 and S127