Commercial SIPs by SIP Supply

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About the Polyurethane Core

Although SIPs are available with either a Polyurethane (PUR) foam core or Expaned Polystyrene (EPS) core, we think PUR foam is a far better insulator and offers the best physical properties of any available insulating foam.

R-Value. Polyurethane has a stable R-value of R-7 per inch of thickness, so you can achieve at least an R-25 with typical 4.5" walls.

Fire.  SIPs are tested to the ASTM E84-04 “Standard Test Method for Surface Burning Characteristics of Building Materials” for smoke and flame spread. The polyurethane foam core has a Class 1 fire rating with a flame spread less than 25 units and smoke spread less than 400 units.

Foam Properties.  Unlike some blowing agents, a number of which are scheduled for phase-out by the Environmental Protection Agency (EPA), PUR foam is not a volatile organic compound and, hence, does not contribute to ozone depletion.

Additional benefits of the polyurethane core:

  • Helps avoid mold and mildew growth
  • Does not support nesting by vermin
  • Contains no formaldehyde
  • Aids in maintaining indoor comfort level
  • Reduces materials needed for construction of energy-efficient buildings
  • Reduces fuel consumption and infiltration of noise
  • Durable with excellent tensile strength and adhesion
  • Provides consistent performance for the service life of the structure

 

PUR-Corecomparison

Compared to other types of PUR, HFC-245fa polyurethane foam offers the best insulation and protection against moisture transport due to its density, cell structure, and good adhesion to skins.  HFC-245fa polyurethane foam is used in the  manufacture of Greenix Panels.

 

What's Trending

With natural disasters on the rise yearly, our most popular products today are our Greenix Emergency Shelters.

Designed to withstand wind, fire and military-style conditions, our shelters are an affordable solution for one or many.  With our volume production capabilities,  we are the ideal choice for city-wide disaster recovery or preparedness programs.. 

Download the Free Greenix Emergency Shelter Info Packet.

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