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

Green Roof Technology Blog

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.  

Living Green in Airports

Green Team at Green Roof Technology, - Wednesday, April 10, 2013

Incheon International, Seoul

Photo: penny_7b /Flickr


Seoul's massive airport is a popular destination for connecting fliers headed to other parts of East Asia from the Americas and Europe. Thanks to its comfortable transit seating areas, expansive duty-free shopping mall and airy main terminal, Incheon earned the highest overall score on the 2012 Skytrax customer satisfaction survey. Incheon also is one of the world's most family-friendly airports. Not only does it have a children's play area, but also childcare lounges and nursing rooms. Older kids might enjoy spending some pent-up energy at the Ice Forest, a large skating rink in the airside terminal.  
 
Other bonuses: This is one of the few airports in the world where you can get free access to a computer and Wi-Fi. Incheon has an impressive seven gardens in the passenger terminal and one in the transportation center. Finally, a free cultural center features exhibits on Korean culture and traditional dance and folk music performances.

Photo: penny_7b /Flickr

10 airports where you'll welcome a layover at mnn.com

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.

University of Maryland to Install More Green Roofs

Green Team at Green Roof Technology, - Monday, March 11, 2013

By: Samantha Yurek

The University of Maryland installed their first extensive green roof back in the fall if 2008 on Cumberland Hall.  Approximately 6,000 square feet of the rooftop is covered in vegetation.  The Adele H. Stamp Union building also completed renovations which involves yet another two new green roofs in 2009.

 

Picture courtesy of UMD

Summer of 2010 brought a Rooftop Food Garden on top of the South Campus Dining Hall. Planters made from salvaged wooden pallets hold all sorts of food including cucumbers, peppers, potatoes, tomatoes, mint and lavender, to name a few. In addition, the space is available for individual gardening projects and other student research or coursework. In the fall of 2011, the Denton Dining Hall followed suit, when the re-opened building integrated green and cool roof systems.

Although this makes up very few of the many buildings at the University of Maryland, each green roof helps to alleviate storm water runoff, the heat island effect, and each building's heating or cooling costs. 

The University of Maryland's Council on the Environment recently rewarded a grant to two graduate students, to extend on their solar energy and vegetated roof research.  Read the full story by the Diamondback here. 

In the future, it wouldn't be surprising to see more building constructed or renovated complete with green roof systems. The technology is available and the industry has definitely grown in the past few years.  

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. 


FBB Green Roof Symposium 2013

Green Team at Green Roof Technology, - Wednesday, February 27, 2013


Photo: Jorg Breuning

The German FBB (Fachvereinigung Bauwerksbegrunung e.V.) is the oldest Green Roof Association in the world and with around 120 members, probably one of the smallest. However, most FBB members are considered leaders in modern green roof technology and their average green roof experience is far over 20 years. It is an elite group that has seen everything you can imagine related to vegetation on impervious areas.

As the father of all green roof associations, this year's event was again filled with innovations, information and trends.The FBB president, Dr. Gunter Mann, pointed out that there is a huge potential for the industry to increase the annual green roof construction. In 2012, the 120 FBB members reported over 40,000,000 square feet of new construction, a significant addition compared to the previous years. The true annual new green roof construction in Germany might be doubled compared to the rest of the world. However, Germans are modest and not interested in quantity, but specifically in quality. Quality of installation, intelligent research and decent public relations are the foundation of the FBB.

In partnerships with other associations (Landscape Association, Concrete Association, Roofing Association, Association for Water Protection, along with many more) it is impressing to hear about the successful public awareness on green roofs.

The elite group at the FBB does a great, inexpensive and super-efficient job for a better and sustainable environment, mainly throughout Germany and reaching out into the world. For many decades they have been setting milestones for a growing, global industry and it is always a blessing to mingle with the biggest, most experienced and best-educated green roof professionals in the world.

Bravo!

 

Cruise Ships Designed by Green Roof Technology Featured in the Wall Street Journal

Green Team at Green Roof Technology, - Thursday, February 21, 2013


Picture: Jorg Breuning 

Over the past five years, Green Roof Technology has had a huge hand in designing lawns on several cruise ships.  Cruises in the past have consisted of mainly indoor space, and although outdoor space is still limited today, much of it is being put to good use.  Five of Celebrity's cruise ships are now complete with Lawn Clubs, allowing passengers to enjoy luscious, green grass on the boat.  Endless activities such as live music, bocce ball or croquet and dancing events are a few that can take place on an outdoor space so green.  The five cruise ships featuring lawn clubs include the Reflection, the Silhouette, the Eclipse, the Equinox, and the Solstice.

The task of placing a lawn on a cruise ship wasn't a breeze.  Many types of grass were tested before the perfect variation was found, ultimately withstanding the excessive salt and winds of the sea.  Challenge number two involved the weight of the lawn, making sure the roof could withstand this much weight.  A mixture of volcanic pumice, sand and clay creates the substrate on which the grass grows. 

 

 

First International Bird Airport on Intensive Green Roof

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

 Ornithoport in Bonn

Picture: Bundeskunsthalle

Airports are plentiful in our world, but a unique concept involves creating airports specifically for birds.  An exhibition on the roof of the Art and Exhibition Hall over the summer of 2012, highlights this common area as a destination point for birds.  To aid this bird airport (ornithoport), nesting boxes and feeders were installed, as well as approach and departure structures, complete with flashing airport signals and safety announcements.  All together this presentation is not only an awesome art piece, but probably the best landing facility for birds from all around the world.  The curator of this project, Professor Res Ingold explains, "In our case, it is an artistic project with scientific backing."

Founded in 1992, the Art and Exhibition Hall of the Federal Republic of Germany has played an important role in the community of Bonn, Germany.  Designed by the architect, Gustar Peichl, the building displays various exhibitions in fields of art, archeology, cultural history, science, and technology.  Aside from exhibitions, the community center frequently hosts symposiums, conferences, performances and concerts.  One of the more attractive aspects of the building is the intensive rooftop garden, which is often site for sculpture displays.  This vegetated rooftop is a nice addition for relaxing with a fantastic view of the surrounding city.  In the summer refreshments are served at the beer garden, wildflowers brighten the landscape and the air is busy with buzzing honeybees.  Multiple honey bee colonies call this rooftop garden home.  In 2012 these little magnificent creatures produced 1,200 pounds of honey!  Accurate daily monitoring of the productivity of the honey bees is accessible online in German, French and English. 

Spotlight on the Sun-Root™ System

Green Team at Green Roof Technology, - Monday, January 28, 2013

Back in 2012, Green Roof Technology installed our first Sun-Root™ System in New York City.  The vegetation’s ability to cool the air increases the efficiency of the solar panels perched atop the green roof. 

Learn more about combining solar and vegetated
roofs with our Sun-Root™ System

This week the Sun-Root™ System has been highlighted in “Under Cover: Solar Vegetated Roofs Take Root,” a recent online article by Green Manufacturer.  The Sun-Root™ will also be in the spotlight in their January/February issue of the Green Manufacturer Magazine.     

Chicago, one of America's green roof leaders, is slowly falling behind in the technological race. Numerous studies have proven solar energy integrated with vegetated roofs are more efficient than either practice by itself. Chicago has yet to offer any incentives that include integrated solar green roof systems.

Northwestern University: 
What Chicago Green Roofs Are Missing Out On 




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.


Follow Us!

RSSGreen Roof Tech Blog
RSSGreen Roof Plant Blog


Recent Posts


Tags


Archive

Latest Blog Posts
  1. Best Green Roof Solution Green Team at Green Roof Technology, 02-Oct-2017
  2. Health Care and Green Infrastructure Green Team at Green Roof Technology, 01-Jun-2017
Facebook   Twitter   LinkedIn   Google+   YouTube
Go To Resources Page