In 2008, Mid-America Pool Renovation completed a full restoration of the large outdoor swimming pool at Camp Na-Wa-Kwa, a Girl Scouts facility in Poland, Indiana. The pool had previously been shot-creted and plastered, then later retrofitted with a PVC liner as a corrective solution.
After years of use, the PVC liner deteriorated, developing folds, discoloration, pinholes, and tears that led to water loss. Moisture trapped beneath the liner was repeatedly exposed to freeze-thaw cycles, causing significant hidden damage to the underlying plaster and concrete.
“Damage and corrosion beneath an unbonded sheet lining can proceed unnoticed for several years.”
