For the most part, all geomembranes have a similar broad function: A fluid barrier. When comparing, the confusion lies in the fact that they are manufactured by different methods and constructed differently, which result in varying properties to accomplish the broad fluid barrier function. Plus, the definition of “fluid barrier” is subjective depending on a host of site, application, fluid composition and regulatory factors. Key geomembrane properties are required to support the overall function.

Geomembrane warranties are typically provided by the manufacturer. Standard warranties are usually included at no additional cost and vary among manufacturers and products, in coverage, duration and other factors. It can be confusing trying to understand what a warranty really says. What needs to be considered when evaluating a geomembrane warranty? 

What laboratory properties are critical in the selection criteria for geomembranes?

Part 2:  Defining the critical geomembrane survivability properties

 

What laboratory properties are critical in the selection criteria for geomembranes? 

Part 1:  Identifying critical geomembrane chemical and environmental resistance properties

What are the key issues in writing “or-equal” geomembrane specifications?

Part 2. An example of an “or-equal” spec gone bad and how it applies to geomembrane specifications.

What are the key issues in writing “or-equal” geomembrane specifications?

Part 1. How are “or-equal” specs used in the construction industry?