CI Max Foam Sheathing

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Designed for easy installation in exposed interiors, Johns Manville CI Max® Polysio Foam Sheathing Board is ideal for places where high efficiency is required.

Johns Manville CI Max® Polyiso Foam Sheathing Board is available in R-Values up to R-26 and provides a continuous layer of insulation to reduce thermal bridging and improve energy efficiency. CI Max sheathing 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. 

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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)

 

Warranties

AP Foil and CI Max 20 Year Limited Warranty

Literature
Product Selector Guide
PIMA Performance Bulletin - Polyiso vs. XPS
JM All-Purpose Wall System Components Sheet

 

evaluation reports
ESR-3398

 

Specifications
JM CI Max Guide Specifications in CSI Format
JM Continuous Insulation Wall System Specification, Section 072100 - Foil Faced Rigid Insulation


JM Foam Board Video


JM Continuous Insulation Video


JM Overview Video


Polyiso Continuous Insulation Wall Systems: The Perfect Wall

Available Documents