From the GMA Techline
Does the Geosynthetic Research Institute (GRI) offer any guidance on the minimum allowable ambient temperature to perform double-track fusion welds of HDPE and LLDPE geomembranes?
(Jonathan | South Carolina)
Reply: We have GRI-GM9 Standard Practice “Cold Weather Seaming of Geomembranes” and it allows for seaming down to -15 C (5 F).