Green roofs are now feasible in sloped applications with Hydrotech's Garden Roof® Assembly, allowing design professionals to expand beyond traditional flat roof applications and put a green roof in places they never could before.

In addition, a sloped Garden Roof Assembly can be designed for visibility and viewing from a wider range of locations, not just standing on the roof. Slopes ranging from 2:12 up to 12:12 are possible for extensive and limited intensive applications, provided the appropriate measures are taken to cope with the shear forces and soil retention. Contact Hydrotech for specific requirements.

Features of Garden Roof® Assembly for Sloped Applications:

  • Depth (3.5” - 13” of growing media)
  • Visibility can be an architectural design feature
  • Suitable for convex, concave and other complex slopes
  • Accomodates up to 12:12 pitch (45º)
  • Beyond 3:12 requires special engineering
  • Vegetation options - plugs with GardMat® or InstaGreen® Sedum Carpet or InstaGreen® Sedum Tile or lawn sod
  • Requires maintenance depending on vegetation selection

Typical Application:

Architects and owners are no longer limited to designing for flat green roof applications. Hydrotech’s Garden Roof® Assembly can now conform to irregular slopes and undulating roofs. For roof slopes greater than 3:12 and with soil depths of 3½ to 13 inches, a GardNet® soil confinement system must be utilized.

Recent Press

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  • October 18, 2017
    CHICAGO, ILLINOIS (October 11, 2017) American Hydrotech – a market leader in the development and distribution of premium waterproofing and roofing products and assemblies, today announced the introduction of the InstaGreen® GT-4 pre-vegetated tray,...
  • April 3, 2017
    Wind data is a critical issue to consider when building a new structure. An increase in the number of green roofs on buildings has driven a need for new wind design standards to be written for vegetative roofing assemblies. Richard Hayden discusses...
  • September 27, 2016
    (September 28, 2016) Washington State has always been considered a pioneer when it comes to the adoption of greener and more sustainable practices. One of the most sustainable practices is to reuse an already constructed building and enhance that...
  • July 16, 2016
    (July 16, 2016) Excerpt from an article in Forester Daily News Green roofs – also known as vegetated or garden roofs – are key green infrastructure elements and are being increasingly recognized for their “valuable ability to absorb, reduce, and...
  • July 1, 2016
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Upcoming Events

  • May 15, 2018 to May 16, 2018

    2018 Grey to Green Conference

    Toronto ON Event Details
  • June 21, 2018 to June 22, 2018

    2018 AIA Architecture Expo

    Javits Center – New York NY Event Details
  • September 24, 2018 to September 28, 2018

    2018 GRHC CitiesAlive Conference

    New York Marriott at the Brooklyn Bridge – Brooklyn NY Event Details
  • October 21, 2018 to October 22, 2018

    2018 ASLA Annual Meeting & EXPO

    Philadelphia PA Event Details