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Determining the cost of large pond geomembrane requires more than just choosing the cheapest material per square meter. All elements of the project need to be considered, including the obvious pond size, but also the purpose of the pond, expected life, slope and depth, whether the water is still or flowing, and transporting the membrane material to the site and who is handling the installation.
Determining the cost of geomembrane for small garden ponds is easy, usually one length and one width can solve it.
As we scale up and move away from retail, we can start considering less than one-third of the material cost, but obviously other related costs are also a big factor. Once we leave small garden ponds, we will also find that the performance of other materials will greatly increase.
In terms of pricing, RPE and PVC for large pond geomembranes can approach the same cost. Sometimes high-density polyethylene (HDPE) is recommended because it is a cheaper material per square meter, but it has significant disadvantages in actual on-site installation, which is where the true cost of the liner becomes apparent.
The cost-effectiveness of pond geomembrane is obviously an integral part of its true pricing. You need non-toxic materials for fish ponds, and you need materials that will not degrade rapidly in long-term projects. If the ground is less than ideal, you may need to use geomembrane to protect the geomembrane from being torn, or before placing the geomembrane in place, you may need to cover the bed with a layer of soft soil or sand.
The area to be covered is simple, calculated by enough to establish an anchoring trench around the perimeter. The ruggedness of the terrain is a factor in material selection. Gently sloping, custom-dug ponds on golf courses or for irrigation can use PVC. Burying this liner to prevent UV degradation extends its service life from a few years to twenty years or more.
For more durable, non-toxic and stronger applications, RPE is better. In this case, the impact of the material itself in terms of strength and puncture resistance is not as great as the reinforcement from weaving. We pioneered the tightest weaving in the industry for our reinforced products, therefore, we produce greater strength and lighter weight in flexible materials suitable for different ground conditions.
Correctly selecting the best pond geomembrane can save more costs, which is reflected in transportation and installation. Large pond geomembranes usually must come from professional manufacturers, and the lightness and flexibility of the liner material helps avoid damage during transportation to the site and unpacking installation.
Installation may be the weakest link in the series of steps required to create a durable pond geomembrane. Although we use our own installers, many projects usually give little consideration to this, and sometimes the labor used on the project is not skilled enough. It is obviously important not to put pressure on the liner during installation. If it is to be buried under a layer of soil or sand, this needs to be done carefully, without putting weight on the unburied part of the liner. If panels need to be thermally welded on site.
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