How many times have you observed an installer performing an extrusion weld over a wrinkle in the geomembrane? This video shows a common result of such welding practices, which is sheet separation. Although wrinkles are not the only cause, this video should help you identify sheet separation in extrusion welds so you can ensure they are properly repaired or, better yet, avoided.
Pet Peeves: Extrusion Separation
Glen Toepfer
