XR® Geomembranes vs. CSPE* (Chlorosulfonated Polyethylene)

Comparison of coated fabric vs. laminate 


30 mil

36 mil

45 mil

Tensile Strength
ASTM D-751 Grab Method
550 lbs 200 lbs 200 lbs
Puncture Resistance
ASTM D-751 Ball Tip (Approx.)
650 lbs 200 lbs 200 lbs
Sunlight Resistance Excellent Excellent Excellent
Warranty Available Weathering & Chemical Compatibility Weathering Only Weathering Only
Blocking Resistance Excellent Fair Fair
Water Absorption
(212°F, 7 days)
+9.9% +85.8% +85.8%
Hydrostatic Resistance
ASTM D-751
800 psi 250 psi 250 psi
Manufacturer of Base Resin DuPont DuPont DuPont
Manufacturer of Reinforcing Fabric DuPont  Allied Allied
Resistant to Wicking Yes No No
Sheet Edge Lock Required
To Prevent Wicking
No Yes Yes
Thermal Expansion
(inches/100')With 150°F Temperature Change
0.78" 2.94" 2.94"
Repairable with Thermal Welding Yes No No

Compare Chemical Resistance of XR Geomembranes vs. CSPE

View more competitive comparisons.

*Formerly Hypalon (discontinued by DuPont)