Protected Membrane Roofing: Blue Roofs

Blue Roof Assembly Options

PMR Assembly Blue Roof

A Blue Roof can be created on a typical Hydrotech PMR (Protected Membrane Roof Assembly) utilizing standard loose stone for ballast. It is the simplest blue roof that can be created.

Using standard ballast stone, the water in the blue roof is stored within the void spaces of the stone and to the required level above the ballast. A heavier than typical application of stone ballast is designed to keep the loose-laid STYROFOAM™ insulation from floating during those rain events when the blue roof is in operation.

A Hydrotech PMR Blue Roof is ideal for those utilitarian roofs that are not designed for tenant use.

Ultimate Assembly Blue Roof

Void spaces that exist beneath concrete pavers in Hydrotech’s Ultimate Assembly can now be used to store large quantities of stormwater. Pavers are installed on pedestals in normal fashion but at an elevated height to generate the needed water storage volume. The paver weight is designed to keep the loose-laid STYROFOAM™ insulation from floating during those rain events when the blue roof is in operation. As a result, heavier, thicker pavers are typically required.

A rooftop terrace would be an ideal application for this blue roof assembly. Because the pedestals supporting the pavers are adjustable, this blue roof assembly may be ideal for roof decks with some roof slope where the goal is to create a level, paved finished surface. Click here for more information.

Garden Roof® Assembly Blue Roof

Elevating Hydrotech’s Garden Roof Assembly by placing it on Permavoid®, a structural void component (available exclusively through Hydrotech) integrates the many advantages of a vegetated roof with the high water detention capabilities of a blue roof. Permavoid® provides a stable platform with an open space of 95% within the unit. The structural nature of Permavoid® is created by plastic tubes between the webbed top and bottom panels. This creates a platform onto which any number of Garden Roof® and Ultimate Assembly® components can be installed. Click here for more information.

 

Recent Press

  • May 21, 2018
    American Hydrotech, a recognized leader in the development and distribution of premium waterproofing and roofing assemblies, today announced the availability of their Protected Membrane Roof (PMR) Planning Guide , a unique, new resource representing...
  • February 1, 2018
    CHICAGO, ILLINOIS (February 1, 2018) The Chicago Blackhawks have captured the hearts of the city of Chicago along with three Stanley Cups in the last decade. The Blackhawks routinely lead the league in attendance at the United Center, and fans were...
  • 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...

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