R-Panel Roof Insulation

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A rigid roof insulation board with high thermal efficiency, Johns Manville R-Panel® is compatible with multiple types of membrane systems.

Johns Manville R-Panel® rigid roof insulation board offers R-Values of up to R-23.6, providing high thermal efficiency. R-Panel is manufactured with a closed-cell polyisocyanurate foam core bonded to fiberglass-reinforced facers and designed for use over metal, nailable and non-nailable roof decks with a variety of membrane systems. R-Panel meets the International Building Code requirements for a foamed plastic roof insulation.

JM_ 100748 190x122


Thermally Efficient: Effective resistance to heat transfer, with R-values up to R-23.6.
Universal Facer: Compatible with BUR, modified bitumen and single-ply membrane systems.
Clean Air: Meets Clean Air Act Amendments of 1990.
Miami-Dade County Product Control Approved:
Complies with the Florida Building Code including the High Velocity Hurricane Zone of the Florida Building Code.
Lightweight: Easy to handle and may be cut with a utility knife or saw.

  ASTM Standards   ASTM C1289-01   Type II, Class I, Grade 2
  Flame Spread   ASTM E84   ≤ 75
  Smoke Development   ASTM E84   ≤ 450
  Water Vapor Transmission   ASTM E96   < 1 perms (57.5 ng/Pa-s-m2)
  Compressive Strength   ASTM D1621   ≥ 20 psi (138 kPa)†
  Dimensional Stability   ASTM D2126   2% max, 7 days (length & width)
  Water Absorption   ASTM C209   < 1% volume
  Service Temperature     -100 to 250°F
  R-Value Per Inch     5.7 LTTR

Data Sheet

R-Panel Roof Insulation Data Sheet


R-Panel Roof Insulation SDS
R-Panel Roof Insulation SDS (ES)


Product Selector Guide

Available Documents