Why Polyiso?

What is Polyiso INSULATION

Polyisocyanurate (polyiso) is a closed-cell, rigid foam board insulation consisting of a foam core sandwiched between two facers. The facers are composed of various organic and inorganic materials. It is used in over 70% of commercial and residential markets for both wall and roof applications. 

Rmax ECOMAXci™ Wall Solution

Rmax Multi-Max® FA-3

Rmax TSX-8510


Rmax Thermasheath®-SI Residential Solution

Rmax Nailable Base-3


  • Low environmental impact
  • CFC, HCFC, HFC free blowing agent
    • Virtually no global warming potential
    • Zero ozone depletion potential
  • Cost effective, optimized energy performance
  • Long service life
  • Recyclable through reuse
  • Recycled content (amount varies by product)
  • Regional materials (nationwide production network)
  • Meets new continuous insulation (ci) standards
  • Quality Mark™ certified LTTR-values
  • High R-Value per inch of thickness
  • Thinner walls and roofs with shorter fasteners
  • Excellent fire test performance
  • Extensive building code approvals
  • Preferred insurance ratings
  • Compatible with most roof and wall systems
  • Moisture resistance
  • Dimensional stability
  • Compressive strength
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Insulation is the product found to provide the greatest investment return and offer the most carbon abatement. Polyiso – which Forbes considers a “green” insulation – offers the highest R-value in its class, with a 20% - 70% greater R-value per inch than any other rigid foam plastic insulation. 

What Makes us Stand Out

Rmax has always been a leader in energy conservation. In 1978, Rmax began creating insulation solutions based on the latest building science as a response to the energy crisis.

We offer a full line of high quality, polyiso-based roof, wall and specialty insulation products for commercial, industrial and residential applications delivering maximum R-values and minimum environmental impact, with efficiency in installation, cost and design.

Following the recent Sika acquisition, Rmax anticipates even greater energy-saving opportunities and looks forward to further embracing its sustainable culture and expanding its sustainable vision.

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