Prefabricated Pool Guide: Panel, Fiber and Polyester

The inner face of the panels is usually made watertight with a membrane liner.

This system is preferred because it provides flexibility in projects with variable geometry and in medium-to-large pools. Installation is considerably shorter than a conventional reinforced concrete pour; however, ground preparation and structural terracing still require professional engineering.

Because their surfaces are finished with gelcoat in the factory, a separate finishing layer is often unnecessary.

Glass-fibre reinforced polyester systems come from a similar family of materials but offer modular solutions or ones that can be completed by lamination on site. Both approaches share the advantages of light weight, corrosion resistance and a smooth inner surface; the choice is made according to the size of the pool and the transport conditions.

Because the shell is produced in one piece in the factory, the width of the pool is limited by the width the vehicle carrying it can transport. Above a certain width, a special transport permit, an escort vehicle and a route plan are required, which changes both cost and schedule.

The second limit is the garden itself. The shell is unloaded from the lorry and set into the pool excavation by crane. Where the crane can stand, how far its boom can reach and obstacles along the way such as power lines, trees and garden walls determine whether installation is possible at all. At a villa whose back garden can be reached only through a narrow side passage, a one-piece pool is usually ruled out.

Measuring these five items before installation is cheaper than measuring them on installation day. The cost of a crane arriving for nothing even once is higher than adding a one-hour site survey to the project at the outset.

The controlled production environment provides a repeatable standard in surface quality and watertightness.

In addition, smooth inner surfaces reduce bacterial adhesion and make cleaning easier. The light shell reduces the load on the ground and so creates a structural advantage on certain plots.

In very large projects or those with special geometry, panel or in-situ systems come into play.

Nor does being prefabricated make a soil survey and correct drainage unnecessary. Badly prepared ground leads to settlement and stress problems even in the highest-quality shell. For a detailed comparison with reinforced concrete, you can consult our related pillar guide. Pool construction carried out with in-situ casting remains the only realistic solution when site-specific forms and large dimensions are involved.

In our projects, we size the filter, pump and dosing systems according to the pool's volume and intensity of use.

The choice between a skimmer and an overflow system, as well as lighting, heating and dosing, should be planned at the design stage. When you combine the speed of a prefabricated shell with a correctly sized plant room, you obtain a long-lasting, low-maintenance pool. Low maintenance does not mean no maintenance; the pool care routine, including water balance, continues in the same way on a smooth shell.