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Domestic & International Headquarters Address:
RAY-CORE Business Park:
305 East Elva Street, Idaho Falls, Idaho 83401

Phone:                                                   Email:
Toll Free: 1.877.552.2440                   Info:
Company Fax: 1.866.503.1314;           Sales:


RAY-CORE SIPs are the Least Expensive per R-value Inch on the market. RAY-CORE is the Largest Manufacturer of structural insulated panels from a single location anywhere. See why...

RAY-CORE SIPs Panels Labeled
  • Foamed-In-Place Wood Studs - Time Proven Strength & Reliability.
  • Foil Radiant Barrier - Reflects Heat & Increases Performance.
  • High R-value Closed Cell Polyurethane Foam - Highest R7 Per Inch.
  • Least Expensive SIP Per R-value Inch on Market.
  • Factory-Direct Sales and Factory-Direct Pricing - No Middle Man.
  • Extremely Lightweight (54lbs - 3-1/2"x4'x8' Panel) - No Costly Cranes Required.
  • Fast and Easy - Uses Standard Framing Practices.
  • No Expensive Engineering, Special Plans, Special Tools or Special Builders .
  • Conventional Lumber Dimensions - Any Plans Will Work.
  • Exceeds Or Meets All Building Codes - Considered Standard Framing.
  • Do-It-Yourself - DIY Friendly - Any Builder Can Build With RAY-CORE SIPs.
  • Perfect Solution for Roof Insulation - Great For New Construction or Retrofit..
  • Strong Walls - You Could Park a Semi On a 4' x 8' Wall Panel.
  • None Of The Numerous Problems Associated with Other Sandwich Panel SIPs.
  • Will Last a Lifetime - Limited Lifetime Warranty!
  • By Far the Best Structural Insulated Panel Available!

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For The Lifetime of Your Structure!