J-DRain GRS is a composite drainage system consisting of 100% post industrial polystyrene regrind dimple core and two layers of geosynthetic fabric attached top and bottom. One layer of fabric is root resistant to most typical greenroof plants. It is not a replacement for the required root barrier.
| PROPERTY |
TEST METHOD |
ENGLISH |
METRIC |
| Compressive Strength - Core |
ASTM D-1621 |
9,500 psf |
455 kN/m2 |
| Thickness - Core |
ASTM D-1777 |
1 in |
25.4 mm |
| Flow - Core |
ASTM D-4716 |
30 g/min/ft width |
371 L/min/m |
| Grab Tensile - Fabric |
ASTM D-4632 |
100 lbs |
.45 kN |
| ROLL SIZE |
AREA |
WEIGHT |
| 4' x 50' |
200 SF |
88 lbs |