Leger R+ Premium
This rigid expandable polystyrene insulation is made of Neopor® with graphite particles and is covered with an aluminized vapour barrier for interior walls. Our (3/4 in.) Leger R+ Premium (R-3.45) exceeds the requirement for insulation of R-4 thermal bridges when combined with a (7/16 in.) fibreboard (R-1.3) or a (7/16 in.) OSB (R-0.68).
| PHYSICAL PROPERTIES | IMPERIAL | METRIC | TEST | LEGER R+PREMIUM |
| Thermal resistance: r-value at 75ºF (24ºc) for 1 in (25 mm) thickness | (hre.pi2 .°F) / BTU | (m2 °C W) / W | ASTM: C-518 C-177 | R4.6 |
| Compressive strength (min.) at 10% distortion | lb/po2 ou psi | (kPa) | ASTM: D-1621 | 16 (110) |
| Bending strength (min.) | lb/po2 ou psi | (kPa) | ASTM: C-203 | 35 (240) |
| Dimensional stability: % of linear change (max.) | % | % | ASTM: D-2126 | 1.5 |
| Coefficient of thermal expansion (max.) | po/po/°F | (mm/mm/°C) | ASTM: D-696 | 6 X 10-5 (3.5 X 10-5) |
| Water absorption (max.) | % | % | ASTM: D-2842 | 4 |
| Capillarity | – | – | – | Nulle |