About Us

We're more than just a liner company. We set the standard for everyone else to follow in the industry.

Laying the Groundwork

GSE's origins can be traced back to Schlegel Lining Technology and Gundle Lining Systems, which pioneered the first high-density polyethylene product in 1972. Over the next four decades, the company evolved into GSE and became a global industry leader. During that time, GSE built a well-oiled machine that produces durable, dependable geosynthetic lining products and systems.

GSE's precursor, Schlegel Lining Technology and Gundle Lining Systems, pioneers high-density lining systems.


Gundle merges with SLT Environmental, Inc., creating GSE Lining Technology, Inc.


GSE acquires Serrot International, Inc. to complement its core business and strengthen its global presence.


GSE becomes GSE Environmental and launches a new brand that better represents the company and its future goals.


GSE is known as the pioneer in our industry. We've laid the groundwork for leadership, innovation and reliability and we’re known for our firsts.

  • GSE was the first to pioneer textured sheet, White, Green, and Conductive geomembrane
  • GSE was the first to develop a full-scale geosynthetic laboratory
  • GSE was the first to use surface mapping to drive increased shear performance
  • GSE has been a pioneer in the development and constant improvements on welding technology
  • GSE has developed the widest breadth and depth of geosynthetic product offerings
  • GSE has been the leader on working with resin manufacturers to improve product quality

Today, GSE offers the largest selection and highest quality geosynthetic products on the market. Billions of square feet of GSE products have been installed around the world and we continue to increase standardized specifications for the highest quality systems and service.

We may be known for our firsts, but those firsts won’t be our last.

About GSE

GSE is a leading manufacturer and marketer of geosynthetic lining products and services. We've built a reputation of reliability through our dedication to providing consistency of product, price and protection to our global customers.

Our commitment to innovation, our focus on quality and our industry expertise allow us the flexibility to collaborate with our clients to develop a custom, purpose-fit solution.