Differences Between XR Geomembranes and HDPE Geomembranes
Selecting a geomembrane for your application can be a challenge. From membrane strength to ease of installation, there’s a variety of factors to consider. XR Geomembranes and high-density polyethylene (HDPE) liners are no exception. When deciding between XR-5® and HDPE geomembranes, consider the following:
- Membrane Strength:
- XR-5 Geomembranes provide over 300% higher puncture strength vs. twice-as-thick 60 mil HDPE membranes and over 200% better tensile strength.
- Environmental Stress Cracking (ESC):
- HDPE has this inherent problem identified by the EPA. XR-5 geomembranes are not subject to ESC.
- Flexibility for Prefabrication and Ease of Installation:
- Prefabrication of XR-5 Geomembranes allows for improved liner integrity and significantly reduces the number of field seams. HDPE is too rigid to prefab. Therefore, all seams are field seams, which translates into longer installation time, higher installation costs, and lower membrane integrity.
- Thermal Expansion/Contraction:
- HDPE geomembranes suffer from extreme thermal expansion and contraction. Contraction is 22 times lower with XR-5 Geomembranes, eliminating the need for design consideration of thermal effects.
Superior chemical resistance
Seaman XR Geomembranes are the strongest, most durable geomembranes in use today. See how they compare to other options when exposed to a wide range of tough contaminants.