Foam Board/Continuous Insulation EPD's

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

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. 

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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


CI Max Foam Sheathing SDS
CI Max Foam Sheathing SDS (ES)

Installation Instructions

CI Max for Exposed Interior Use


AP Foil and CI Max 20 Year Limited Warranty


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

Available Documents