The membrane is thick, durable, and resistant to punctures, making it perfect for preventing leakage and maintaining water levels in my pond. Installation was straightforward, and the material laid down smoothly without any issues. What impressed me most was its ability to withstand both UV exposure and temperature fluctuations, which are important for outdoor applications like this. It has held up excellently over time, with no signs of wear or degradation. The water quality has been maintained, and there’s been no seepage at all. Overall, I highly recommend this product to anyone needing a reliable solution for water containment in ponds, dams, or other similar applications