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    Hydropruf FlexDeck


    Fast curing solvent free car-­‐park deck coating system. Crack resistant elastomeric polyurea waterproofing.


    • Car Park Decks
    • Balconies
    • Roofs


    • Seamless waterproofing
    • Fast curing
    • No odour
    • Slip resistant
    Download Datasheet
    Contact us for more information

    Product Specification

    Product: Hydropruf Flexdeck
    Thickness: Nominal 4mm

    Substrate Requirements

    The substrate should be dry to 75%RH as per BS8204
    and free from rising damp.

    Asphalt: No primer required

    Concrete: Primer must be used. Minimum 25N/mm2, free
    from laitance, dust and other contamination.

    Products Included in this System

    Primer:Conprime-2 (E4568)0.25kg/m2
    Chelford 52 Sand Or PU3922 PU primer1kg/m2
    Waterproofing:Leeson SG2 (PU4693 Spray)2.2kg/m2
    Leeson HA1 (PURA4421)2.2kg/m2
    Wear Layer:Leeson Grip 2-1 (D3149)1.3kg/m2
    Aggregate:Quartz 0.4-0.8mm6kg/m2
    Top Coat:Sealer Ext-12 (PU5035)0.35kg/m2

    Detailed installation instructions are available on request.

    Installation Service

    The installation should be carried out by an experienced contractor, details of contractors in your area can be obtained by contacting
    the company.

    Important Note

    Leeson Polyurethane’s products are guaranteed against defective materials and manufacture and are sold subject to its standard Terms and Conditions of Sale, copies of which can be obtained on request.

    UV Discolouration

    *Please note that rubber crumb binder products are based on MDI polyurethane technology which is subject to colour change under exposure to UV. The strength of the system is not affected.

    We have in-house UV testing facilities and can test customers rubber/binder combinations. We strongly urge our customers to use this service prior to using a new rubber.

    Download Datasheet
    Contact us for more information

    Technical Information

    The figures below are typical properties achieved in laboratory tests at 21˚C and 55% Relative Humidity.

    Temperature Resistance

    Resistant to temperatures of up to 70˚C for long periods.

    Chemical Resistance

    To various acids, diesel and petrol as well as strong bases.


    ASTM D-4531

    PropertyTest MethodWatertite 25 Year Typical Values
    Water Vapour TransmissionASTM E-966.048g m2/ day
    Adhesion to ConcreteASTM D-45414 N/mm2
    Min Tensile StrengthASTM D-638 Method A,Die C15N/mm2
    Min Elongation @ BreakASTM D-638 Method A,Die C750%
    Low Temperature Flexibility MandrelCAN CGSB 37.50 M-­‐89Pass (5 Tested)
    Crack Bridging at -­‐ 25OCASTM C-836Pass (5 Tested)
    Shore A HardnessBS EN ISO 86880
    Shore D HardnessBS EN ISO 86830
    ModulusASTM D79025N/m2
    Bond Strength>3N/mm2(Concrete Failure)

    Environmental Impact

    The finished system is assessed as non-hazardous to health and the environment. The long service life and seamless surface reduce the need for repairs, maintenance and cleaning. Environmental and health considerations are controlled during manufacture of the products by Leeson Polyurethanes staff.

    Further Information

    To ensure you are specifying a fit for purpose surface for your project please consult our Area Sales Manager for your area or visit our website.