Search
Back to Home Page
Home   |   Contact Us Ph: 443-345-1578

Green Roof Technology Blog

Fluent Transition from Green Roof to Green Wall

Green Team at Green Roof Technology, - Friday, April 06, 2018

Fluent Transition from Green Roof to Green Wall for 23 Years



Multimedia artist André Heller created a world of wonder to celebrate Swarovski’s hundredth anniversary in 1995. Heller’s thematic centerpiece for Swarovski Crystal Worlds was the shape of the Giant. He developed the story of a Giant who set out to experience the world and all of its treasures and wonders. With this knowledge, the Giant settled down in Wattens/Tyrol, where he has watched over his Chambers of Wonder ever since.

So far, 14 million visitors from around the world have experienced the magic!

The original principle of these Chambers of Wonder is based on the historical chamber of wonders in the castle of Ambras, which was a sixteenth-century attempt to assemble a universal collection of all knowledge known at the time. In the Chambers of Wonder at Swarovski Crystal Worlds, internationally and nationally recognized artists, designers, and architects have interpreted crystal in their own unique ways. They create concepts of space and experience from the sparkling material.

Welcome to the magical world that unfolds whenever you step through the head of the Giant into Swarovski Crystal Worlds…

Visit the worlds of wonders covered under a Green Roof and protected by the Green Giant:

The subterranean world of the Giant begins in the Blue Hall, the first Chamber of Wonder in Swarovski Kristallwelten (Swarovski Crystal Worlds). Its slanted walls, painted in the color “International Klein Blue,” a shade developed by the artist Yves Klein, suggest the inside of a cave.
#greeninfrastructure #greenroofs #greenwalls #svarovski #stormwater #oldschoolgreening #sustainable #museeum

Rooftop Vineyard

Green Team at Green Roof Technology, - Tuesday, April 03, 2018

Rooftop Vineyard

Rooftop farming for educational and recreational purposes seems a fancy trend in North America.
In 2002 Dipl.-Ing Markus Wittling was planning to elevate an entire vineyard on top of the Wine Museum in Cologne, Germany. The sloped green roof spans over the entire museum building of almost 20,000 square feet. It is likely the first vineyard on a roof and the first sloped rooftop farm in the world.

In the middle ages Cologne was the most important wine trading town north of the Alps. The "Weinmuseum Köln e.V." is honoring this fact with a museum and with astonishing and educational exhibits about wine.
The green roof displays 40 of the most important grape species from around the world situated onto 720 vine stocks.
The soil layer (growing media) including granular drainage is 27 inches deep and consists of a blend of porous volcano material like Lava rock and Pumice - materials in which grapes develop their unique taste. Over 15 years of high performance.

This rooftop vineyard is a prime example of old school green roof technology and is ideal for educational purposes. If you have a chance to visit Cologne, the Wine Museum is a must on your Green Roof Safari and your effort will be rewarded with amazing wine tasting!

#greenroofs #stormwater #vineyard

Sustainability, Resilience:

Green Team at Green Roof Technology, - Friday, February 09, 2018
Celebrating two projects with 20 years of integrated Green Infrastructure.



20 years after managing the Green Roof installation in 1997 Zeppelin-Carrée (left)
and 1999 Kronen-Carrée (right).
Both buildings are covered with over 500,000 sf of multiple types of green roofs.

It is likely the world's first Solar Garden Roof.

 

It is now on Goggle Earth.

#greenroofs #biophylilla #stormwater #greenrooftechnology #greeninfrastructure #optigreen #solargardenroof

An Exceptional Green Roof

Green Team at Green Roof Technology, - Monday, February 27, 2017

Sufism Reoriented Sanctuary

 

An Exceptional Green Roof

After more than half a century in temporary quarters, Sufism Reoriented now has a permanent home in Walnut Creek, California. Designed under the guidance of Murshida Carol Weyland Conner by the distinguished architectural firm of Philip Johnson Alan Ritchie, the new sanctuary is set among serene gardens on three acres of land in a suburban neighborhood about twenty-five miles east of San Francisco.

Alan Ritchie’s design perfectly realized Murshida Carol Weyland Conner's vision. Brought to fruition by the Architect of Record, Soga + Associates Architect Inc, this beautiful design is to endure for over 700 years. The building is innovative in many ways, from its curved marble cladding from Carrera, Italy, to its climate control with state-of-art air filtering systems, to its Green Roof composition with 100% recycled Foam Glass Gravel  engineered by Jorg Breuning , Owner of Green Roof Service LLC , to its storm water management with rain harvesting features to retain the entire annual rainfall, to its 33 feet tall hollow bronze sculpture with seismic base isolators and acrylic butterflies, standing inside of a 3-story tall room with curved glass guardrails.


With highly experienced architectural services and project management by Clement T. Soga, Soga + Associates Architects Inc, the Sanctuary’s construction began on May 24, 2012 and its Ribbon Cutting ceremony was held on February 24, 2017.

 

Green Roof Service LLC – Green Roof Technology worked hand in hand with Sufism Reoriented, Soga + Associates Architects Inc, and SWA Group Landscape Architecture to create a Green Roof solution that perfectly mimics the natural soil horizons with materials that will last thousands of years without compromising or limiting healthy growth of any vegetation at any time. Jensen Landscape carefully implemented the details and specifications of this new type of Green Roof under the direction of Jorg Breuning.  It is the first Green Roof in North America that utilizes Foam Glass Gravel made of 100% recycled glass on a large scale.  The ultra-lightweight material performs as a drainage and retention layer combined with outstanding structural capacities. Foam Glass Gravel is produced in the USA and in Germany according to the strict specifications of Green Roof Service LLC - Green Roof Technology.      

27th February 2017

Jorg Breuning

World’s First Modular Green Roof System

Green Team at Green Roof Technology, - Sunday, February 12, 2017

World’s First Modular Green Roof System

Modular Green Roof System

Green Roof Professionals around the globe often wonder or speculate how and when the commercial modern Green Roof industry really took off. There are many opinions and alternative facts out there but only a few really know that the hot spots with patents were in Basel Switzerland and in Stuttgart Germany for seamless or wall-to-wall Green Roof systems.

The World’s first modular (or tray) system has been developed in Stuttgart by Brecht and Hämmerle, mainly known as the Brecht System (if one doesn’t consider terracotta pots on roofs as a modular system).

The Brecht System was a basic polystyrene box with a three-layer Green Roof system. The system was available in extensive, semi- intensive and intensive planting depth. With this simple three-layer system the inventor combined many benefits in one box. All systems had a water reservoir for maximum water retention – more than any other Tray system currently on the market and more than any fabrics, foams or mineral wools, and the boxes contained standard nursery soil for a healthy fast growth and to lower costs.

There were different options for covering the less attractive boxes, with either wood or metal (aluminum). Today we call these frames around the boxes: Edging.  

Based on the polystyrene, the boxes were very lightweight and easy to install. Actually, they fitted into each other to create different heights and different planting depths. I would describe them as a Modular –LEGO-like planting system.

Unfortunately, any polystyrene as a limited lifespan when exposed to UV or biological activity and so many of these roof gardens had problems after 5-10 years. Further, many of the plants rooted out of the boxes (drainage holes) and penetrated the waterproofing.

Around 1992 the last Brecht System was removed and replaced by wall-to-wall or seamless Green Roof systems. All of these Green Roofs are still existing - if the building still exists.

The Brecht Modular Green Roofs system had also other issues that are similar to the currently existing systems. However, nowadays the tray systems use metal, other plastics, and mainly with irrigation systems. This makes them last longer, but as often only delays the point of failure. The roots of plants and the biological activity on healthy Green Roofs are often underestimated as well as the functional lifespan of foams, polystyrene drainage mats, and mineral wool products.

Green Roofs and Fireworks

Green Team at Green Roof Technology, - Friday, December 30, 2016

 

 Green Roofs and Fireworks

Practically all dry organic materials are combustible at relative low temperatures. Roof shingles or many waterproofing membranes on roofs are typically petroleum-based products (including Asphalt) and there is hardly any difference to dry organic materials. Some products are equipped with chemical fire retardants that could decrease the risk of spreading fire, unfortunately not the risk of leaks cause by heat and impact.


The living vegetation of fully functional and well-engineered green roofs contains moisture and most plants (especially succulent plants on large extensive green roofs) have a fraction of the energetic potential comparing to all other components used in a building. The green roof growing media (soil for the green roof plants) is a blend of different mineral components with an organic content of typically less that 15%. It is practically impossible to set this material on fire – even when the natural moisture content is not considered.

Fires or leaks on non-vegetated roofs caused by consumer or display fireworks could have been prevented if the building would have had a fully functional green roof without mono-culture vegetation, or if conventional roofs would be well-maintained (regular removing of organic debris from the roof and gutters).

 

Certainly a fire is the worst-case scenario; however in most cases smoldering firework parts (and cigarettes) are only causing leaks on unprotected roofs that are discovered much later and relate to costly repair. Roof warranties typically don't cover any sort of mechanical impact and they are -again- worthless. See blog post from 2014.

 

Any sort of fireworks damages or many other mechanical impacts are unknown on functional green roofs. Green roofs prevent leaks or even a fire and so it is the best payback is right there.

See also Fire Safety on GreenRoofs

Nature is (literally) so cool.

Happy New Year!

 

Green Roofs North America

Green Team at Green Roof Technology, - Friday, July 22, 2016

 

Does this ever happen in North America?

While in North America the average size of Green Roof is around 8,000sf this size would be considered a small size Green Roof in Germany. The average size in Germany is likely over 25,000 sf and the amount of Green Roofs build every year is probably 10 times higher.

Despite higher energy costs, the costs for the installation are lower in Germany because they build them in less than the half time, with fewer people, with hardly any middle men, without pre-planted plastic boxes and without consistently reinventing the wheel.  They don’t try to sell warranties – they are actually installing Green Roofs. They also spend no or less time posting their projects on all social platforms and don’t need to say this is the biggest, nicest, most divers, highest or any other superlatives.

They just do it because they understood the environmental and social benefits of Green Roof mass production instead of trying to grow one carrot in a city for millions of people just to be on TV. Green Roofs in Germany are done for everybody vs. in North America it is often done for personal vanity.

16 years of North American Green Roof industry and still researching? When does North America think big?  

United States of America and Green Roofs

Green Team at Green Roof Technology, - Tuesday, June 14, 2016

Construction Going Up – Ecology Going Down?

From 2010 to 2015 warehouse new construction in the US tippled from around $5 Billion to $15 Billion with all the economic benefits. 15 Billion in new construction equals around 1000 new warehouses every year or approximately 250 million square feet rooftops plus the same amount of infrastructure provision. Annually, 500 Million square feet or 8800 football fields of lost nature by building new warehouses in the United States alone.

Green Roofs in North America?

With some of the existing warehouses, this translates to a potential of at least 1 Billion of square feet of new extensive Green Roofs every year that could retain the volume of Lake Constance that is surrounded by three countries (Germany, Switzerland and Austria) or over the double volume of Lake Powell (UT/AZ)!

Assuming that these Green Roofs are done right, maintained by professionals and without artificial irrigation, the natural and controlled succession of these Green Roofs would allow a unique habitat for many endangered species over the upcoming years.

These green roofs can also reduce the re-roofing costs by multiple billion Dollars with a related relieve for landfills and a huge reduction in energy use.

Most important however is the climate effect.

Warehouse belts surround any large city in North America. These warehouse belts with endless impervious areas actually preheat the air that is conveyed into our cities by the wind. In the worst-case scenario, these large warehouses have reflective roofing membranes that might cool the building but also increase – due to reflection – the heat in the atmosphere substantially.

Warehouse belts around cities are like a forced air heating system in a building only on a much larger scale – Warehouse belts are a wasteful forced air heating system for entire cities

Fundamental sustainable thinking and large scale long-term research hardly exists in the US, so it is no wonder that experts are likely to miss the entire picture.

Currently in the US there are no significant requirements or ecological considerations in master plans that address this counterproductive climate habits towards our cities. Actually, it seems that warehouse belts grow faster than Green Roofs!

North American ecological organizations, LEED, or other industry associations are also missing the bigger picture. They often work locally – from one block to the next, they are focused on one or two rare plants, on a distinctive bee species, butterflies or other human pleasing critters as long as there is an instant payback in popularity. It seems worth more having a highly unsustainable fully irrigated Green Wall in the cafeteria, a nice green plaque on the wall, or growing some carrots on the roof to demonstrate social and sustainable responsibility. Most marketing efforts for green washing are beyond the costs of a simple highly efficient extensive Green Roof that helps the future generations.    

Warehouse belts are heating American cities

The United States is a great country and North America is a large continent where thinking big was always wanted and welcome. Now it seems people are getting lost in their little plastic boxes, made in China with some nice flowers and a watering can next to it.

It is very romantic but also very embarrassing.

Fireworks, Green Roofs and Happy New Year!

Green Team at Green Roof Technology, - Thursday, December 31, 2015

 

Fireworks, Green Roofs and Happy New Year!

Practically all dry organic materials are combustible at relative low temperatures. Roof shingles or many waterproofing membranes on roofs are typically petroleum-based products (including Asphalt) and there is hardly a difference to dry organic materials. Some products are equipped with chemical fire retardants that could decrease the risk of spreading fire, not the risk of leaks cause by impact.

The living vegetation of functional and well-engineered green roofs contain moisture and most plants (especially succulent plants on large extensive green roofs) have a fraction of the energetic potential comparing to all other components used in a building. The green roof growing media (soil for the green roof plants) is a blend of different mineral components with an organic content of typically less that 15%. It is practically impossible to set this material on fire – not even considering its natural moisture content.

Potential fires or leaks on roofs caused by consumer or display fireworks can be prevented if the building has a fully functional green roof.

A fire on any roof is the worst-case scenario. I many cases smoldering firework parts (and cigarettes) are causing leaks on unprotected roofs that are discovered much later. These problems are unknown on fully functional green roofs. When a green roof prevents a leak or even a fire it is typically not recognized but will save expensive repair or even loss of a building.

Nature is (literally) so cool.

Happy and successful green 2016!

 

Making Progress with Green Roof Maintenance?

Green Team at Green Roof Technology, - Monday, August 03, 2015
 
Making Progress with Green Roof Maintenance?

In the last decade in North America, we've seen many Green Roofs where the intended plants never really flourished. We estimate that in the US at least 50% of the green roofs are not performing to their fullest potential. This can be observed by simply looking at the most obvious of indicators, the plants themselves, regardless if they were planted on purpose or somehow found the space to take root.

The most performance/maintenance deficits on extensive Green Roofs we discovered on thin-layered systems (below 3 inch), pre-planted boxes (often called modular systems or hybrid systems), Green Roof Systems from roofing manufacturers with ineffective components, single source warranty-systems, or design intents without consideration for the needs of plants. 

Advertising Green Roofs Green Roofs, Problems
As advertised and the final product (sloppy work all around)

Because of their immense marketing efforts, these systems are not only much more costly (whether thin or thick), they were also hardly designed or engineered with maintenance in mind – or simply not designed with common sense. For these manufacturers revenue seems all what matters and references that look good on the first day for some pictures to post on Social Networks.

Often Planners and Engineers want to have the least work with the “unknown” territory Green Roof and hire an intern to google all the information they are looking for or much more likely, the nice colorful advertising with long-term warranties baits them.  Sometimes people fall in love with systems that seems innovative, new or that promise the most LEED points. It is all so convenient but nothing really helps the plants to grow.

 
As advertised and the final product

At the time when it does not work anymore, everybody pushes the “Old Maid” to others since the decisions were made democratically among all participants and because the building owner trusted the experts he ends up with the “Old Maid” and an additional bill that can go into the millions.


There are many reasons for building owners to question things in the process and to ask for a third party advice e.g. experienced Green Roof experts. The costs for advice are typically only a percentage  of potential savings before construction and likely save expensive repair, renovation or rebuild in the first 5- 6 years.

Our advice: Don't play cards - ask for advice. 






Follow Us!

RSSGreen Roof Tech Blog
RSSGreen Roof Plant Blog


Recent Posts


Tags


Archive

Latest Blog Posts
  1. 101 Common Sense of Intensive Green Walls Green Team at Green Roof Technology, 16 hours 40 mins ago
  2. Celebration 20 years of Integrated Green Infrastructure Green Team at Green Roof Technology, 12-Jul-2018
Facebook   Twitter   LinkedIn   Google+   YouTube
Go To Resources Page