Resources
Products
CI Max Foam Sheathing
CI Max Foam Continuous Insulation
Johns Manville CI Max® Polyiso Foam Continuous Insulation is available in R-Values up to R-26 and provides a layer of insulation to reduce thermal bridging and improve energy efficiency. CI Max Continuous Insulation is designed for exposed interior applications and is approved for use without a thermal barrier. It is suitable for wall or ceiling applications in residential, commercial, agricultural and industrial buildings.
Advantages
Thermally Efficient: Effective resistance to heat transfer, with R-values up to R-26.
Vapor Barrier: Maintains a minimum thickness of one inch and qualifies as a Class I vapor retarder.
Lightweight: Easy to handle and may be cut with a utility knife or saw.
| ASTM Standards | ASTM C1289 | Type I, Class 1 |
| Flame Spread | ASTM E84 | 4": ≤ 25 |
| Smoke Development | ASTM E84 | ≤ 450 |
| Water Vapor Transmission | ASTM E96 | 0.02 perms (1.4 ng/Pa-s-m2) |
| Compressive Strength | ASTM D1621 | ≥ 16 psi (110 kPa) |
| Water Absorption | ASTM C209 | < 0.6% volume |
| Service Temperature | -100 to 250°F | |
| R-Value Per Inch | 6.0 |
Data Sheet
CI Max Foam Sheathing Data Sheet
SDS
CI Max Foam Sheathing SDS
CI Max Foam Sheathing SDS (ES)
Installation Instructions
CI Max for Exposed Interior Use
Warranties
Literature
Product Selector Guide
PIMA - Polyiso Wall Insulation Boards EPD
PIMA Performance Bulletin - Polyiso vs. XPS
JM All-Purpose Wall System Components Sheet
Evaluation Reports
Certifications and Specifications
JM CI Max Guide Specifications in CSI Format
JM Continuous Insulation Wall System Specification, Section 072100 - Foil Faced Rigid Insulation
Polyiso Sheathing EPD
JM Foam Board Video
JM Continuous Insulation Video
JM Overview Video
Polyiso Continuous Insulation Wall Systems: The Perfect Wall
