CI Max Foam Sheathing
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.
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|