Heat welding

Heat Welding Pool Liners

OverviewHeat welding joins vinyl or thermoplastic pool liner panels by melting material at the seam so it fuses into a continuous, waterproof bond. Properly done, a heat-welded seam is as strong as the original liner and suitable for high-strain, outdoor environments1.

Common Heat Welding MethodsHot air welding

uses a controlled hot-air gun or automatic welder to melt overlapping edges and press them together1.Materials Suitable for Heat WeldingPVC and other vinyl-based liners are the most common; welding parameters depend on material formulation and thickness (e.g., 60mm or industry-standard gauges)2.

Surface Preparation

Clean the mating surfaces thoroughly of dirt, oils, and release agents.Trim to square, remove wrinkles, and ensure consistent overlap (typically specified by the liner manufacturer).

Inspection and Quality AssuranceVisual check

seam should be even, with uniform bead or fusion and no voids or wrinkles.Destructive test (in prefabrication): peel test on a sample seam to confirm strength.Advantages of Heat WeldingProduces a permanent, watertight bond when done correctly.Clean appearance and strong mechanical performance suitable for long-term installations1.