• Deck Waterproofing

    Deck Waterproofing

    The waterproofing of podium decks and balconies is often an important requirement of a complete structural waterproofing solution. Due to the clients’ requirements to maximize the available space, we frequently find that the below ground structure will extend beyond the footprint of the above ground building. It is therefore essential that these areas and the detailing at ground floor level are completely impervious to water ingress.

    Newton Deck Waterproofing Products

    Newton offer a complete range of externally applied liquid membranes, protection and drainage products for these scenarios in isolation, or, when required, to interface with other waterproofing elements. As with all waterproofing systems, the correct design and application will ensure the products fulfil the design function and provide internal conditions which are fit for purpose in terms of the area’s required use.


    Typical Specifications would be:

    • Warm Roofs
    • Inverted Warm Roofs
    • Cold Roofs
    • Green/garden Roofs
    • Balconies

    Example of Deck Waterproofing

    Newton inverted warm roof detail interfacing with the damp proof course and the internal System 500 Cavity Drain waterproofing

    Featured Products

    Newton 408 DeckDrain Drainage Membrane For Decks and Flat Roofs

    A double cuspated, deck and flat roof drainage membrane, that incorporates a polypropylene geotextile filter layer, bonded to a water impermeable HDPE (High Density Polyethylene) core.

    Newton 706-HB Cementitious Based Waterproofing Membrane

    Two-component epoxy and cementitious polymer modified coating, with a self-smoothing system that provides excellent resistance against water, aggressive chemicals and abrasion.

    Newton 114 Acriflex is installed in an inverted warm roof specification, in conjunction with Newton 408 DeckDrain, enabling the creation of a paved area above a habitable zone using an inverted warm roof detail.

    Newton 103-S used as a hard-wearing durable membrane for use in a car park specification. This can be used on a concrete deck which could be situated above a dry internal environment.


    “As a long-standing Newton customer, we’re always being kept up to date and supported with the latest product developments, like Newton 109-LM, and getting the right training for our contractors. The liquid rubber is something we’ve used before and it’s always really quick and easy to apply, regardless of how it’s applied or what it’s being used for. Using the drainage membrane alongside was good for this job too, as it meant the finishes could be put back in quickly. Gunwharf Quays was back in use swiftly.”


    Simon Towers, Rubber Spray Solutions


    Newton highly recommend that installation is undertaken by a Newton Specialist Basement Contractor (NSBC). NSBCs can provide a substantial insured guarantee and take full design liability on the project, fulfilling the role of ‘Waterproofing Specialist’ as recommended by the BS 8102:2009 ‘Code of Practice for Protection of Below Ground Structures Against Water From The Ground’. Please contact us for a list of NSBCs in your area.


    Further Information

    For further information about deck waterproofing systems , or to speak to one of our technical experts, please ring 09 527 1829 or e-mail tech@newtonsystems.co.nz.