ISO Red CI – OX Engineered Products


Give us a call at 800-345-8881 or fill out the form below
and we’ll get back to you within two business days.

Tell Us About Yourself:

Product of Interest:


ISO-RED CI POLYISO SHEATHING. Helping you stay in the black.

IsoRED CI is a rigid polyiso insulation that can add much needed R-value for residential and light commercial applications. With the ability to be affixed to wood, metal, masonry and concrete, IsoRED CI can be used for practically any job to increase energy efficiency in ceilings, interior walls and exterior walls. Additionally, water-resistant facers provide a first line of defense against moisture intrusion.

Now Available ISO RED CI XS has a facer 4 times thicker than standard ISO RED CI.


• Best-in-class long term R-value performance.
• Provides thermal, air and vapor control layers to help keep conditioned spaces comfortable.
• 25 psi compressive strength equates to 3600 psf soil pressure.
• Resilient facer technology with closed cell foam core allows for a code compliant, weather-resistant barrier.
• Closed cell polyiso foam provides superior fastener seal-ability that building wraps do not.
• ASTM E84 Class B Certified


Now Available ISO RED CI XS has a facer 4 times thicker than standard ISO RED CI. Front Facer: XS 3-ply P/K/F Back Facer: 3-ply P/K/F Seam Finish: Ox Seam Tape 2 1/2" minimum width

Physical Properties of ISO RED CI Polyiso Sheathings
ASTM Method  D1621  C209  E96  D2126 (1)  D2126     E84 (2) 
   Minimum  Compressive  Strength,psi  Water  Absorption  Water Vapor  Transmission,  perms  Dimensional  Stability %  Change  Nominal  Density, pcf  Service  Temperature  Range, F  Flame  Spread  Smoke  Developed 
ISO RED CI  Type 1, Class 1  25  <0.06  <0.3  <0.4  2.0  -50 to  +250  ≦75  ≦450 

Downloadable Resources

​​​​ ​    
ISO RED CI Brochure
ISO RED CI Install Guide
ISO RED CI Technical Evaluation Report
ISO RED CI Damage Repair Guide
ISO RED CI CSI Specifications (.doc)
ISO RED CI CSI Specifications (.pdf)
ISO RED CI One and Two Hour Fire Rated Assemblies
ISO RED CI Sealed Technical Report: Portal Frames with Hold Down
ISO RED CI Window Trim Installation Details
ISO RED CI Rough Opening Penetration Best Practices
ISO RED CI Safety Data Sheet
ISO RED CI LEEDs Evaluation
Downloadable Resources
Document Type
Iso RED CI Brochure
Product info
ISO RED Technical Evaluation Report
Product Info
Damage Repair Guidelines
Product Info
CSI Specification (.pdf)
Product Info
CSI Specification(.doc)
Product Info
One and two hour fire rated assemblies
Product Info
Sealed Technical Evaluation Report: portal frame with hold down
Product Info
Window Trim Install Details
Product Info
Best Practices Rough Opening Penetrations
Product Info
Safety Data Sheet
Product Info