Yes, combining multiple pond liner panels cover a larger pond is possible, although it requires careful installation to prevent leaks. When using multiple liners, each panel must be seamed or welded to the adjacent panel. Depending on the seaming technique, the panels will need to overlap by 1 to 2 feet at each seam. Some liners, such as reinforced polyethylene (RPE) can be heat-welded for an extremely strong and durable seam, while EPDM and PVC others use liner tape or adhesive specifically designed for waterproof sealing.
Joining pond liners allows you to cover expansive or irregularly shaped ponds that exceed the size of standard liners. However, keep in mind that combining liners can increase the potential for leaks over time, as seams may be more vulnerable to shifts in the ground or pressure from water and debris. If you're considering a large or complex pond shape, consider purchasing a liner that can be custom fabricated to your pond's shape and size. This substantially simplifies installation and provides the most durable, factory quality seams possible.
