Polymer Walls came into being in the middle 1970’s. The primary advantage of Polymer Walls is the non-corrosive factor. Polymer is lightweight and easy to handle. The original name for Polymer walls was Structural Foam. Structural Foam did not have marketable appeal as a product name and it was later changed to Polymer.
Polymer Walls are molded to exacting specifications and have reinforcing ribs on the back to give them strength. More care is required to install Polymer than other types of wall systems such as Wood or Steel. The polymer wall panel is rigid, but somewhat brittle. Backfilling with any type of soil containing rocks or hard lumpy dirt is not a good idea, as the rocks may crack or break the panel. You need solid, uniform support behind the Polymer wall to counteract the weight of the water. It is recommended to backfill Polymer walls with sand or screening (gravel dust).
A concrete collar is always required to give strength to Polymer walls. This collar needs to be 6 inches thick. The collar is poured in the 3 ft over dig and covers the bottom of the wall panel and the bottom of the polypropylene braces.
The braces supplied with Polymer walls are deck support braces. They help support the weight of the concrete deck that rest on top of the wall panel. If you are pouring more than 4 ft of concrete we recommend placing concrete block support piers at the back of the pour.
With Polymer walls, you are limited on shapes and sizes because there are a limited number of radius panels available.
In summary, Polymer walls require more care to install than Wood or Steel. Polymer has non corrosive properties that are well suited for Salt generator pools, and areas where soil corrosiveness are a problem such as near the coast or in areas with high water tables.