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Floating covers

    Geomembranes are commonly used to seal both the bottom and slopes of ponds, basins or deposits, to avoid any contact between the contained liquid and the supporting ground. However, in some cases it is also necessary to avoid the contact between the liquid and the atmosphere by providing a cover on the liquid’s top surface. Floating covers are a flexible and economic way of doing so, avoiding expensive and structurally complex rigid covers.

    To create the floating cover the geomembrane is fixed at the crest of the slope and installed with a specific geometry in combination with a system of floaters and ballast lines, in such a way that the cover can move up and down following the level of the contained liquid, whilst maintaining always a certain level of tension. Unlike polyolefins, reinforced PVC geomembranes are not affected by this permanent tension and remain stable throughout the project design life. The system is then completed with vents to drain accumulated gases, access traps to allow for inspections, pumps to evacuate the rain, etc. The cover can be installed whilst the reservoir is in operation.

    Floating covers are mainly used in drinking water, irrigation and industrial applications, due to the following benefits:

    • Reduction of losses due to evaporation
    • Protection against contamination by dirt and other atmospheric agents
    • Control of liquid composition, avoiding interaction with rain
    • Prevention of gas and odour diffusion
    • Control of water temperature and blocking of sunlight

    Some references

    Downloads

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    Brochures

    Download iconWaterproofing floating covers
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    1 MB

    Technical datasheets

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

    DOP

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

    Specifications

    Download iconSpecification floating covers
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    1 MB

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    General downloads & certificates

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    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)
    265 KB
    PDF IconCertificate of conformity polymeric geosynthetic layer
    PDF iconDocument (pdf)
    268 KB

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