EPI's PVC fabricated geomembrane liners are single-ply construction. Polyvinyl Chloride is the main polymer.

EPI uses only first quality virgin resins and each material meets or surpasses the ASTM D 7176 minimum specifications* for materials and ASTM D 7408 minimum specifications for seam strength.**

​

​​

​

Dr. Shobha Bhatia and Gautam Kasturi of Syracuse University conducted interface friction angle testing of 3 different types of PVC geomembranes and 2 types of HDPE membranes with sand, sandy loam, silty clay and non-woven geotextile.

In the realm of modern agriculture, the need for innovative and reliable solutions to manage water resources, prevent soil erosion, and contain harmful substances is more critical than ever.  Since its inception in 1980, EPI has been at the forefront of delivering environmental solutions, driven by a commitment to sustainability and innovation through quality, extensive testing, and research projects to advance the industry.

At EPI, we pride ourselves in producing the highest quality geomembrane systems available, a prominent aspect of which is quality control. From materials to installation, we have a number of resources available to assist with material selection and specifications. Click below to view our Quality Control Manual and other useful quality control data.

​

Need to know how to measure an irregular pond? Understand the best way to unfold your liners? Click below for a variety of how to PDFs ranging from measurements to welding to installation tips. 

​​

​

EPI is committed to using only the highest quality materials for our customers. Click here to review a variety of product specific durability tests conducted to test strength, endurance, and longevity across a variety of geomembranes.

​

New PVC geomembrane can be welded to existing PVC liner that has been buried. Liner welding can be accomplished using a few simple techniques. Click below for more information about welding new and existing PVC, thermal welding, and wedge welding temperatures.