This project revolves around the refurbishment and extension of the Trith-Saint-Léger municipal pool, with the addition of a new covering made from ETFE cushions, providing the building with light while ensuring it is perfectly sealed.
This new roof is comprised of a total of 12 ETFE cushions with four layers, arranged in a flat and sloped 33-metre surface, with the first four cushions measuring 19 metres long and the remaining 12 measuring 34 metres long.
This configuration covers a total space of 950 m².
This installation has been carried out using IASO's standardised AVIS TECHNIQUE system for ETFE cushions.
The ETFE cushions have four layers, with the upper layer featuring a design of 4.2-mm aluminium-coloured dots, covering a 65% of the entire surface. The thicknesses of the ETFE membranes are 100, 200 and 300 microns.
The edge of the roof is made using a sandwich of insulation and sealing, finished with lacquered aluminium flashing on top and a sealing membrane underneath. Both elements are completely integrated into the roof to guarantee its watertightness.
The sockets on the roof’s edge, which attach the frame to the concrete support structure, have been specially designed to be able to house the mobile supports for a handrail which allows maintenance to be carried out.