XR-3 PW® vs. Polypropylene
| Property | 30 mil XR-3 PW ® | 36 mil Polypropylene |
| Tensile Strength | ||
| ASTM D-751 Grab Method | 550 lbs | 225 lbs |
| Puncture Resistance FTMS 101C Method 2031 |
350 lbs | 300 lbs |
| Sunlight Resistance | Excellent | Excellent |
| Hydrocarbon Resistance | Excellent | Poor |
| Chlorine Resistance | Excellent | Good |
| Warranty Available | Weathering & Chemical Compatibility | Weathering Only |
| Blocking Resistance | Excellent | Fair |
| Water Absorption (212°F, 7 days) |
9.90% | 85.80% |
| Hydrostatic Resistance ASTM D-751 |
800psi | 325 psi |
| Seam Strength | 100% | < 80% |
| High Temp Dead Load - 2" Seam, 4 hrs. (120 lbs @ 160° F) |
Pass | Fail |
| Resistant to Wicking | Yes | No |
| Sheet Edge Lock Required To Prevent Wicking |
No | Yes |
| Thermal Expansion (inches/100') With 150°F Temperature Change |
0.78" | ~3" |
| Repairable with Thermal Welding | Yes | YES |
| Minimum Contact Size (smallest container per NSF 61)1 |
500 Gallons | 2,000-50,000 gallons |
| 1Smaller ratings mean less impurities may be transmitted to the potable water by the geomembrane | ||
