Green Roofs - Living Architecture Monitor - Spring 2012 - (Page 18)

CURRENT RESEARCH ON THE ROOF WITH… wE ASkED EXPERTS: wHAT IS yOUR OPINION — MODULAR GREEN ROOf SySTEMS, OR LOOSE LAID INDUSTRY PROFESSIONALS WEIGH IN ON THEIR PREFERENCES jIM LINDELL National Marketing Manager, Green Grid Roofs Truly modular systems offer great advantages over loose laid or built-in-place systems. The biggest advantage being the ability to easily access the underlying waterproofing system for maintenance or repairs without the use of tools that can damage the waterproofing layer and without damaging the vegetation. Modular systems are, for the most part, pre-vegetated eliminating the labor costs of planting on the roof, and reducing the amount of post installation maintenance and irrigation (plant selection and climate depending). Modular systems in general require less installation time and labor. Some modular systems have thin edges that give a visually seamless look when pre-vegetated to 95% coverage. There is another distinction that should be made with modular systems. There are hybrids or subterranean modular systems which are delivered and installed in a modular format, but that is where their modular benefits end. Once installed, hybrid systems essentially become loose laid systems by way of removal of the side walls of the module trays or the trays are made from biodegradable materials. Once installed it is no longer possible to easily access the underlying roof. jORG bREUNING Green Roof Service LLC Modular green roof systems or ‘hybrid’ green roof systems are not a new technology. They were first introduced in 1978 in Stuttgart Germany; however their popularity was limited due to the high costs for additional unnecessary materials. All successful extensive green roofs, in Germany today, are loose laid, in-place, monolithic or wall-towall green roof systems. While not all modular systems are the same, the general consensus, among experts, is that loose laid is more beneficial for the property owner and biodiversity. The largest dis- SySTEMS? jOIN THE NEw GRP fORUM TO EXCHANGE EXPERT OPINIONS AT HTTP://GREENROOfS.ORG/INDEX.PHP/fORUM http://greenroofs.org/index.php/forum

Table of Contents for the Digital Edition of Green Roofs - Living Architecture Monitor - Spring 2012

Green Roofs - Living Architecture Monitor - Spring 2012
Contents
From the Founder
Seen & Heard
Bookshelf
Special Thanks
On the Roof With…
Innovation
Urban Agriculture Summit in Toronto August 15th – 18th
Citiesalive in Chicago Oct 17th – 19th
Policy and Standards
We Asked Experts Their Opinions on Modular or Loose Laid Green Roof Systems, Check Out What They Said
I Guess Size Really Does Matter! — Growing Media Insights
Eleanor Mckinney Taking Austin by the Horns
New Industry Products
Green Roof Falls Flat in New York City
Green Roofing Leader Shows Industry What They’re Made Of! Tremco Incorporated
Plant Profile
New GRP’s
Professional Calendar
New Corporate Members
GRHC Buyers Guide
On Spec

Green Roofs - Living Architecture Monitor - Spring 2012

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