Removable pool liners

Choosing above-ground pool liners depends on the anchoring method supported by your pool's perimeter wall:

• Overlap system: the PVC liner extends a few centimeters over the steel wall and is secured with rigid plastic profiles that snap into place.
• Hanging or bead system: the replacement has a heat-welded bead or tab around the top edge that fits directly into the slot in the coping pieces.
• Standard fastening: commonly used on round-wall models, where the sheet metal requires an even overlap to regulate lateral tension.

Check the type of existing profile on your pool before ordering a replacement to avoid mechanical compatibility issues during filling.

You should measure the exact diameter and the full height of the metal wall on the outside before selecting a replacement. A common size for circular structures is the Blue Gre liner Ø 350x120 for round pools, specifically designed to withstand hydrostatic pressure on 120 cm walls. Installing an undersized membrane puts the high-frequency welds under destructive stress as the pool fills, causing breaks where the wall and base meet.

The thickness of polyvinyl chloride usually ranges from 20/100 (200 microns) to 50/100 (500 microns), depending on the pool dimensions:

• Thicknesses of 20 to 30 microns are reserved for shallow pools or smaller-diameter pools with a height of 90 cm.
• Thicknesses of 40 to 50 microns are required for pools with heights of 120 cm or 132 cm because of the water load accumulated on the bottom.
• Reinforced bases provide greater resistance to the constant friction of manual pool cleaners and swimmers' footsteps.

Greater thickness increases resistance to chemical wear, although the material needs to be handled at a higher temperature to stretch it properly.

Installation must be carried out at an ambient temperature between 15 °C and 25 °C. Below 15 °C, the material becomes rigid and loses flexibility, making it virtually impossible to stretch without risking tears at the corners. Above 30 °C, the plastic expands too much and forms wrinkles on the bottom when it comes into contact with cold water. For the initial fill, add about 3 to 5 centimeters of water to settle the base by walking on it barefoot before tightening the upper walls.

Accidental punctures under two centimeters can be permanently sealed without draining the pool completely. If the hole is in the bottom or an accessible side, simply apply the Starpool liner repair kit directly underwater using transparent vinyl patches and specialist adhesive. If the tear is larger, is near the factory seams, or the material has become extremely rigid over the years, replacing the liners for above-ground pools is the only solution that restores structural watertightness without the risk of sudden failure.

A generic replacement will not fit because oval pools require an exact perimeter pattern adapted to the layout of the buried beams and straps. For this size, products such as the Blue Gre liner for oval pools 500x300x120 ensure a precise fit for 120 cm wall heights. Differences of just 10 centimeters between the length and width cause the curved corners to bear uneven tension, deforming the outer sheet and causing ongoing leaks around the filtration fittings.

Cuts for the suction and return fittings must only be made when the water level is a few centimeters below the opening:

• Fill the pool gradually until the water reaches 5 to 7 centimeters below the skimmer frame.
• Screw on the rubber gasket and trim frame, tightening firmly to press the PVC against the steel sheet.
• Once the watertight seal is in place, cut only the inner plastic of the frame with a sharp utility knife.

Cutting the liner before the water weighs down the bottom will shift the holes relative to the metal sheet, forcing you to replace the entire liner due to misalignment.