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R-Panel Roof Insulation
R-Panel Roof Insulation
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.
Advantages
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 |