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Nation’s largest Solar Garden Roof

Green Team at Green Roof Technology, - Wednesday, July 03, 2013


Photo courtesy of Elkus Manfredi Architects and BHC Architects.

Green Roof Technology is proud to announce their partnership with BHC Architects to design the largest Solar Garden Roof in North America.  The Solar Garden Roof will rest atop the new, soon-to-be build Exelon headquarters in Baltimore, MD. 

Exelon’s office tower will be the tallest building in the upcoming Harbor Point multi-use business park, scheduled for completion in Fall 2014.  

The Exelon headquarters rooftop will house a 40,000 sf green roof and an estimated 400 Sun-Root™ Modules, which will generate approximately 120,000 kWh’s a year.  This will be the largest Solar Garden Roof in North America.

For more information about the Solar Garden Roof System and to see a short video of how it all comes together, please visit:  http://www.greenrooftechnology.com/solar-green-roof.


Combining Urban Rooftop Farming with Public Transportation

Green Team at Green Roof Technology, - Saturday, June 22, 2013

By: Jörg Breuning

Photo: Bauder, SSB Stuttgart Germany

Germany is the country of inventors, poets and thinkers. According to historical research, rooftop farming has been a long tradition since the mid-evil times in the dense cities of Europe. The lack of open space inside city walls brought people up to their roofs. Because there was also no efficient sewer systems, it was easy to utilize the organic remains to fertilize and grow plants. Throughout the centuries, survival proved to be a tough journey, mainly caused by overpopulation. When it became too dangerous to venture from your house, people discovered their roofs as additional space for growing their own food in order to overcome these rough years. Currently we are witnessing this growing trend once again in many metropolis areas in North America. The motivation is still the same, jobs can be hard to find, it's difficult to stand out when everyone is competing for essentially the same things.

Luckily our sewer systems are more advanced today, synthetic fertilizers are cheap and these farms do not depend on organic remains anymore. The quality of food should be acceptable in this respect - disregarding the extreme rates of pollution within cities.

However, let us backtrack to the topic of inventions.

Growing food on rooftops of the public transportation system (buses and trains) can help to combine two major needs of urban citizens. The added value is that your transportation systems are now also farmer's markets and while riding the bus home from your cubical, you can manage all your food shopping in one step including fresh produce grown directly above - on the roof! If the roof of the transportation vehicle is a semi permeable membrane, the carrots actually can be harvested from the inside. How convenient would this be? Depending on the crop, the sunny routes have more sun loving veggies and the transportation system manages regular crop changes from a more balanced and diverse food supply. Think about all the new jobs being created!

Sure, this technology is just in the beginning stages, but with the current hype for locally grown and diverse environmental approaches, it is just a matter of time until people will also jump on the bandwagon (or bus). It is just as ideal to look for some free advertising space in the press.

So, see you on the Lemon Line or drop me a line from the carrot bus (they should probably invest in free WiFi too).

 

Jörg Breuning welcomes people who want to learn from decades
of green roof experience - askjorg@greenrooftechnology.com

Swarthmore College Performing Arts Center Green Roof Install

Green Team at Green Roof Technology, - Tuesday, June 18, 2013

 

Our relationship with Swarthmore College began nearly a decade ago. We have had the privilege of working with the college on several other green roofs, a few of which appear on the front cover of popular green roof books.

This past Friday, Andrew went to Swarthmore College to oversee the install of the college's newest green roof. The Furbish Company was awarded the contract to install the 31,000 square foot green roof.

On a beautiful afternoon, the Furbish installers added the final touches on one of the lower roofs. The custom designed green roof is a hybrid single-course system that utilizes heavy-weight drainage and retention fabrics (provided by Resource Conservation Technology), a 100% pumice growing media layer (provided by Stancills Inc.) and sedum mats (by Sedum Master). This system was utilized due to the roof's weight capacity limitation.

 

 

 

Lancaster Green Roofs Receive a Little More Green

Green Team at Green Roof Technology, - Thursday, April 25, 2013

By Andrew Yanders


E. King Fire Station after receiving 70 lbs. of Sedum Cuttings.  Five varieties of cuttings were spread that day and 6 varieties of   herbaceous plugs

Last week I traveled to the City of Lancaster to oversee the install of 155 lbs. of Sedum cuttings on the Dewatering Building and E. King Street Fire Station green roofs.  Both green roofs were installed earlier this year during the winter months.  The Dewatering green roof was installed January 22nd through the 25th and just under two months later Fire Station green roof was installed. 

There is a common misconception that green roofs cannot be constructed and vegetation planted during the winter months.  Actually, we believe installing green roofs when spring is just around the corner is ideal.   The weather may not be to the likely of many fair-weather green roofers, but for those who are willing to brace the cold and wet, the payback for the client is well worth it.  By establishing the vegetation in its new soil media prior to the start of the growing season, plants are able to jump start their growth and the first 2 months of the growing season can be equal to more than 6 months of growth if the same plants were planted later in the year.  Unfortunately, too often vegetation (in this case the Sedum cuttings) is not available until the spring when it is more advantageous for the nursery.

It was so cold the week we installed the Dewatering Building’s green roof that the growing media and Sedum mats arrived frozen solid.  The growing media had to be defrosted overnight inside the garage portion of the building and the Sedum mats that could not be unrolled were left out in the sun for one day.  Despite being completely frozen prior to install, the health of the Sedum mats was not compromised at all. 

There is one detail that must be given special attention when planting during the winter months.  When planting plugs, it is critical that they are planted as deep as possible.  If this requires loosening or removing a portion of the bottom, so be it.  But if they are not planted deep and the soil well compacted around them, then plugs will migrate up out of the soil during periods of freeze and thaw.  This can happen to the extent that a plug becomes completely removed from the soil, exposing the root system to the elements, and often results in the plug withering and dying.  Plugs are not cheap and a negligent planting technique is a waste of the client’s money. 

 

The color of the Sedum mats on the upper portion of the Dewatering Building's green roof has changed from mostly reds to a variety of lush greens.  New growth is abundant.  

Preparing the soil for Sedum cuttings is critical.  Because the soil was installed several weeks prior, the top layer of the soil needed to be loosens and leveled.  This increases the contact area between the soil and the cuttings, promoting more abundant rooting.

Even though there was a light rain while spreading the cuttings, we still watered the green roof.  We wanted to ensure there was uniform moisture throughout the roof, but also the moisture helps to hold the cuttings in place until they begin to root out in a few days.  

First Steps to Planning a Green Roof

Green Team at Green Roof Technology, - Tuesday, April 23, 2013

 By: Samantha Yurek

Happy Earth Week! Hopefully everyone has taken some time out of their busy lives to lend a hand to our beautiful planet we inhabit. Whether it is picking up some litter, planting a tree or deciding to go all out and look into acquiring a green roof! Here are a few things you should have a good idea of before you leap into the planning process.

1. How sturdy is your roof?  Adding growing media and plants to your rooftop adds weight to your structure. Make sure your roof can handle some extra weight first. Find out the materials and structure of your building.

2. Is your roof sloped?  A slight slope is perfectly fine, but anything steeper than 15 degrees, the roof might become a slide for the plants without additional constructive design.

3. How much are you willing to spend?  Implementing a green roof is an investment for the future. Simple extensive vegetated roofs usually cost around $10-$15 a square foot (pre-grown planter boxes or modular systems are more expensive). Many local programs will help pay for green infrastructure, based on the environmental benefits. 

4. What type of green roof are you looking for?  A simple meadow-like area, not accessible and mainly for the environmental benefits (extensive) or an intensive roof, complete with recreational room and the potential for larger plants such as trees.

5. How are the sunlight conditions?  The majority of green roof plants enjoy direct sunlight to flourish. If the building is situated in a heavily shade area, the green roof plant selection becomes limited.

6. Do you want an integrated solar green roof?  The Sun-Root™ System is the newest of technologies, a fully integrated system and an ideal symbiosis of PV panels and an extensive green roof. It is easy to install and will not penetrate the roof. The entire system has the potential to pay back within 5 years and also meets stormwater requirements in all cities of North America.

 

Do your homework first before deciding on a green roof, our website is a great starting point to increase your green roof knowledge. If you're interested in a green roof or have any questions, please don't hesitate to contact us, we would be happy to help you get started today!

New Optigrün Edging System Type SKL for Extensive Green Roofs

Green Team at Green Roof Technology, - Thursday, March 28, 2013

Optigrün International AG (1-800-627-4955) recently released a completely redesigned green roof edging system.  Created from 3.5 mm recycled ABS (with UV stabilizers of course), the new edging system uses hinge and click connections.  The 3-point connection system is quick and makes laying perfectly straight edges a breeze.  

The Type SKL edging system is available in 8 cm & 12 cm heights.  The edging system consists of two types of pieces, 1100 cm lengths and 300 cm corners.

The versatile and easy to ship system can be designed for numerous applications such as separations, terminations & drainage channels. For more information and purchase opurtunities in North America please contact us at Green Roof Technology.

Ideal for roof slopes up to 5°.

Picture: Optigrün / Green Roof Technology

Modular Office Farming – Hybrid Office and modern Green Roof Technology

Green Team at Green Roof Technology, - Tuesday, March 19, 2013

Now that rooftops have been discovered to be a potential area for urban farming, many people believe this this is the solution for providing healthier and locally grown produce.  They believe in this place despite its over average air pollution, lack of natural symbiotic opponents, high costs for water, poorly nutrient retaining soils, high labor costs and no machinery.

Yellow PepperHowever and completely disconnected from all the above mentioned disadvantages food can also grow in the inside of any building.  Modern green roof technology implemented in old yogurt containers to act like a modular system and can easily find a place close to a light source.  Depending on the system, they require less than once a week watering.  The water could even be recycled cold coffee (no sugar), tea or flat sparkling water before it is dumped into the sink.  Instead of sieving out of the tea leaves or coffee grounds these waste products can be supplements to regular plant fertilizer.  The run-off of these simple systems is zero since nobody wants water puddles in the living room, office or conference room. The results can be remarkable and some additional vegetables for lunch are always good.

The systems work without high tech, with fully recycled and recyclable materials, comes without an App, no power outlet and any other gimmicks.

The fresh green of the plants creates a nice living and working atmosphere, keeps the humidity in the comfort zone and additionally cleans the – already filtered – air.  In our office peppers and pineapple are the favorites.  

 

 

Green Roof Service LLC/ Green Roof Technology 

Your Green Roof Technology team is able to develop low maintenance concepts for plants far beyond yogurt container solutions in private-, professional- and public environments. Furthermore, we design individual service packages concerned with the maintenance, health of plants and plant arrangements. From European studies we know that a better professional environment increases the motivation of people.     

Bildnachweis/Picture: GMH/FvRH

New Green Roof at Fire Station #3

Green Team at Green Roof Technology, - Monday, March 18, 2013

Fire Station #3, located at 333 E. King Street, is home to the newest green roof in the City of Lancaster, PA.  The 2,640 sf extensive green roof was completed last week in only 2 days.  Once again the weather was not ideal. On Tuesday it poured all day and overnight the temperature dropped.  Wednesday was cloudy and quite cold. But through thick and thin the mission is always completed on time and in style.  

Fire Station #3 is the 2nd green roof installed under the Lancaster's green infrastructure initiative.  So far the total green roof area installed is 9,675 sf.

Aquascape Sues over Collapsed Green Roof

Green Team at Green Roof Technology, - Thursday, March 07, 2013

 

By Jörg Breuning Picture: Daily Harrald

Back in February of 2011, the lower end of Aquascape's headquarters collapsed after a heavy snow event that blanketed Chicago with 2 feet of snow in 24 hours.  The building once held the title as the "largest sloping green roof in North America," covering over 256,000 square feet. 

In a blog post, Green Roof Technology covered the roof collapse back in 2011, blaming the failure of the green roof on poor engineering regarding the drainage of the system. Blog post 09/06/2011

We also wrote a Case study about the dilettantism and ignorance of so-called experts that are designers, engineers and construction companies when it comes to modern green roof technology (download PDF: Fixer Upper or Lawsuit? Sloped Extensive Green Roof Critique).

Since we've collected even more examples that are not mentioned in the press, that are fixed “quietly” or where the client has been convinced that certain problems are “normal” for a green roof. We estimate the potential of law suits on existing green roofs over 80 million Dollars, which is probably more than the entire Grant money  spent so far for the implementation of green roofs.   

Many of these self-promoted experts are still playing an important role in the American green roof education system (GRP) and within the North American industry. It is interesting to mention that in other countries where green roofs have been established over decades and where there are 10 times as many built annually, that there were never such incidents reported. These countries not even have a “highly developed” green roof professional education system. What they have is called Common Sense; the understanding of how small indicators could cause huge problems and they understand their responsibility to the industry even when they are not directly involved. There is no ignorance, dilettantism or vanity – just pure professionalism based on solid education.

Now two years later, Aquascape has sued 9 different contractors, construction companies, engineers and architects for $13 million in damages.  These companies include Artisan Design Build LLC, Senekteks, Tricon Construction, Olsson Roofing, Tecza Environmental Group, Applied Ecological Services, Metallic Building Company, Area Erectors and Dewberry Architects (Read the Daily Herald Article) and we still have the cart in front of the horse.

At Green Roof Service LLC/Green Roof Technology we obviously can't change the system, but we will continue to support owners of green roofs to get what they deserve and what they are paid for. 


New Lancaster Green Roof

Green Team at Green Roof Technology, - Friday, January 25, 2013

The sun sets on the 3rd day of construction.  High winds and freezing cold temperatures have made this project particularly challenging.    

Using money from their $7 million dollar PENNVEST green infrastructure loan, the City of Lancaster has begun installing the first of 10 green roof projects.  The first extensive green roof is currently being installed on the Dewatering Building at the City’s Wastewater Treatment Facility.  The 7,000 square foot extensive green roof is divided between two rooftops.   Green Roof Technology has been the City’s green roof consultant for a while now and will continue to be involved every step of the way.  Our primary objective now is to oversee the installation of the extensive green roofs.  Many more pictures to come. 

Read more information about Lancaster’s Green Infrastructure PENNVEST loan at Water World.

Video highlighting Lancaster's green infrastructure plan.


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