• Newton 420 Reservoir

    Newton 420 Reservoir

    Extensive Green Roof Drainage Membrane

    Unique drainage and water retention membrane for use where a water reservoir is required for extensive green roofs of sedum, herbaceous plants, mosses or grass above decks and roofs. Newton 420 Reservoir has a bonded geotextile that prevents intrusion of the soil into the water holding cups during back-fill and compression. This results in a permanently larger volume reservoir than any other 20mm deep green roof membrane.


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    Key Benefits

    • Unique bonded geotextile does not sag into the water holding cups as is the case with loose laid geotextiles.
    • Large drainage holes allow a much higher drainage flow through the membrane than comparative products, ensuring that when the water holding cups are full, the water drains quickly so as not to water log the soil.
    • Suspended soil particles (fines) are filtered out by the geotextile layer.
    • Large drainage layer created by the 20mm HDPE core.
    • Tough and durable.
    • Quick and easy to install.

    Typical Applications

    As a water holding and drainage layer above a deck, flat roof or pitched roof where shallow planting is used to create an extensive green roof.

    Speak to the Experts

    For further information about structural waterproofing speak to one of our technical experts:

    Call us: 09 527 1829
    Email us: info@newtonsystems.co.nz

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    PDF Downloads

    Data Sheet


    Product Overview

    Code: M31

    Size: Roll: 50m x 920mm

    Colour: Black

    Area:  46m²


    BIM Object

    Newton 420 Reservoir (M31)