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Floating covers

    Geomembranes are commonly used to seal both the bottom and slopes of a pond, basin or deposit.

    Though in some cases it will also be necessary to use a watertight floating cover as protection against evaporation, dirt, rain water, and also to prevent the diffusion of gases or odours.

    • Drinking water storage: the cover keeps water clean and avoids pollution
    • Storage of concentrated brine, or chemical solutions or to protect saline solution from the rain
    • Environmental protection against the gas fumes or odours. In this case a special drainage device and recovery of gases must complete the cover device.

    Basic characteristics of a floating cover:

    A floating cover consists of a flexible geomembrane of the same dimension as the geomembrane that gives the waterproofing of the pond; it will be fixed at the crest of the slopes. The liquid is then introduced between the two membranes, so that the cover floats on the surface of the liquid.

    The level of the surface will vary depending on filling height of the covered liquid. Consequently there will be some remaining material which will be located in the area of the folds and kept in place by lines of ballast and floats. The actual method may vary from site to site.

    The geomembrane assures this cover, and floats on the surface of the liquid.

    In addition, the geomembrane is fixed in the crest to withstand the wind.

    Alternatively, the floating cover may be covered by a layer of water. However, a device must be provided to allow the evacuation of excess rainwater on the cover. Both, pumps and gravity flows are commonly used.

    The installation of a gas drainage will enable the evaporation of gases that accumulate under the deck, for example by aeration of the water.

    Finally, a trap door will be installed that allows access between the cover and the waterproofing membrane of the basin for subsequent maintenance.

     

    Standard solutions for waterprooifing basins and reservoirs

     

    Downloads

    Brochures

    Download icon Waterproofing floating covers
    application/pdf Document (pdf)
    1 MB

    Technical datasheets

    Download icon RENOLIT ALKORPLAN 00312 TD
    application/pdf Document (pdf)
    266 KB
    Download icon RENOLIT ALKORPLAN 00414 TD
    application/pdf Document (pdf)
    257 KB
    Download icon RENOLIT ALKORPLAN 00418 TD
    application/pdf Document (pdf)
    258 KB
    Download icon RENOLIT ALKORPLAN 02329 TD
    application/pdf Document (pdf)
    292 KB
    Download icon RENOLIT ALKORPLAN 35038 TD
    application/pdf Document (pdf)
    242 KB
    Download icon RENOLIT ALKORPLAN 35052 TD
    application/pdf Document (pdf)
    259 KB
    Download icon RENOLIT ALKORPLAN 35152 TD
    application/pdf Document (pdf)
    259 KB
    Download icon RENOLIT ALKORPLAN 35052 Spec TD
    application/pdf Document (pdf)
    372 KB
    Download icon RENOLIT ALKORPLAN 35053 TD
    application/pdf Document (pdf)
    259 KB
    Download icon RENOLIT ALKORPLAN 35054 TD
    application/pdf Document (pdf)
    254 KB
    Download icon RENOLIT ALKORPLAN 35254 TD
    application/pdf Document (pdf)
    247 KB
    Download icon RENOLIT ALKORPLAN 35554
    application/pdf Document (pdf)
    271 KB

    DOP

    Download icon DOP 004130713
    application/pdf Document (pdf)
    58 KB
    Download icon DOP 004140713
    application/pdf Document (pdf)
    58 KB
    Download icon DOP 004210713
    application/pdf Document (pdf)
    58 KB
    Download icon DOP 004350713
    application/pdf Document (pdf)
    58 KB
    Download icon DOP 005210713
    application/pdf Document (pdf)
    58 KB
    Download icon DOP 023290713
    application/pdf Document (pdf)
    58 KB
    Download icon DOP 023390713
    application/pdf Document (pdf)
    57 KB
    Download icon DOP 350520713
    application/pdf Document (pdf)
    58 KB
    Download icon DOP 350530713
    application/pdf Document (pdf)
    58 KB
    Download icon DOP 350540713
    application/pdf Document (pdf)
    57 KB
    Download icon DOP 351520713
    application/pdf Document (pdf)
    58 KB
    Download icon DOP 352540713
    application/pdf Document (pdf)
    58 KB
    Download icon DOP 355540713
    application/pdf Document (pdf)
    58 KB

    Specifications

    Download icon Specification floating covers
    application/pdf Document (pdf)
    1 MB

    General downloads & certificates

    PDF IconISO 9001 2017-2020 EN
    PDF iconDocument (pdf)
    260 KB
    PDF IconISO 14001 2017-2020 EN
    PDF iconDocument (pdf)
    269 KB
    PDF IconCertificate of conformity membranes
    PDF iconDocument (pdf)
    255 KB
    PDF IconCertificate of conformity polymeric geosynthetic layer
    PDF iconDocument (pdf)
    266 KB