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RPP - Reinforced Polypropylene

Reinforced Polypropylene (RPP) geomembrane is a heat-weldable polyester reinforced sheet designed for floating covers and liners in potable and industrial water containment applications. The membrane is specifically formulated for long-term use in buried or exposed geomembrane applications. The membrane is based on a UV-stabilized polypropylene copolymer that does not require either polymeric or liquid plasticizers to maintain flexibility.

Product Warranty 
36 mil is warrantied for 15 years - 45 mil is warranted for 20 years. - 60 mil is warranted for 20 years. Special warranties are available and can be considered for project specific requirements.

RPP is heat welded under controlled conditions into panels at one of CLI's three fabrication facilities. It is available in 36 mil, 45 mil, and 60 mil thicknesses. CLI fabricates RPP in panels of up to 30,000 sf.

CLI installs RPP using heat fusion welding equipment, operated by IAGI trained and certified welding technicians, which will provide our customers with a high quality lining system.

Design Notes
RPP is an enviro-friendly material and is available in tan, black and white colors without sacrificing any of its desirable properties (colors are a special order with a minimum sq. ft. purchase). This product is also manufactured and is available, upon request, in an unreinforced product line (UPP).


  • Available In 36, 45 & 60 mil
  • Soil Covering Not Required
  • Fabricated In Panels Up To 25,000 sq. ft.
  • Approved For Potable Water Applications
  • Plasticizer-free
  • Very Flexible
  • No Environmental Stress Cracking
  • Available In Colors
  • Excellent UV Stability & Ozone Resistance
  • Long Lasting
  • Colors: Black, Tan, White, Green, & Custom with min quantities.

rpp uses:

Decorative Pond lined with RPP Geomembrane
  • Decorative Ponds & Lakes
  • Water Features
  • Mine Tailings
  • Reservoirs
  • Tank Linings
  • Waste Water Treatment Facilities
  • Floating Covers
  • Golf Course Ponds
  • Lakes & Streams
  • Irrigation Ponds
  • Canals & Channels
  • Secondary Containment
  • Oil Field Pit Liners
  • Evaporation Pond Liners
  • Detention & Retention Ponds
Need more info? Contact us to learn more: