This article seeks to establish a series of reflections on what may be the best treatment of the effects linked to changes in temperature and wind during the installation of a geomembrane. It is conceivable that a manufacturer of geomembranes has little to teach to an installation company on many aspects related to the installation. Of course, it is the case. However a manufacturer can have a very deep understanding of the behavior of manufactured materials which together with the permanent contact maintained with hundreds of installation companies and in very different environments, with Project Designers and Project Managers from very different backgrounds and experience, allow us to store a lot of information that is which gladly want to share.