St. Louis Zoo Green Roof (St. Louis, MO)

St. Louis Zoo Green Roof (St. Louis, MO)

When Fox Architects was enlisted to design an animal nutrition center for the St. Louis Zoo, it was decided early on that a green roof would be incorporated into the construction of the "green building." Shield Systems, Inc. was quick to sign on to assist in incorporating the necessary design to assure a successful green roof application. The roof deck is unique to conventional construction as it is sloped in such as way to transition from the building in to the finish grade.

To install the green roof assembly the metal decking was first covered with a high density composite board to provide for a smooth surface. Next, a 215 mil hot rubberized asphalt was installed and flashed into the surrounding perimeter walls and parapets. After the installation of the membrane system, the green roof assembly was installed. First, a root barrier was placed over the membrane to protect against root migration and damage to the membrane. Following the root barrier a geo-composite drainage board was installed. The purpose of the drainage medium is to retain rain water, normally up to 60%. A filter fabric is placed over the drainage composite to prevent the soil from filling the pockets designed to hold water. After the filter fabric a moisture mat is put in place with the purpose of retaining and wicking moisture to the roots of the plantings.

Finally, the engineered soil is installed at an average of 4" thickness. Growing media is light weight and loaded with organics to promote plant growth and provide for moisture retention. With as little as 4" of the specialty soil the roof can support hardy growth of sedums and grasses in an extensive roof application.

In the case of the Orthwein Nutrition Center, a grouping of sedums and grasses were specified by SWT Landscape Architects. Photos show the aggressive growth of the plantings after only one year. The flow of the plantings from the roof to the on grade landscaping make for a seamless transition.

9 comments (Add your own)

1. wrote:
As the admin of this website is working, no doubt very soon it will be well-known, due
to its quality contents.

Sat, October 6, 2018 @ 5:02 PM

2. wrote:
It's not my first time to pay a visit this website, i am
visiting this website dailly and take nice facts from here everyday.

Sun, October 7, 2018 @ 7:22 PM

3. wrote:
I truly love your blog.. Very nice colors & theme. Did you make this amazing site yourself?
Please reply back as I'm trying to create my own blog and would like to learn where you got
this from or exactly what the theme is called. Appreciate it!

Mon, October 8, 2018 @ 11:44 AM

4. wrote:
Hey! This is my first visit to your blog! We are a
collection of volunteers and starting a new initiative in a community in the same niche.

Your blog provided us valuable information to work on. You
have done a marvellous job!

Wed, October 10, 2018 @ 1:40 AM

5. wrote:
Hi, just wanted to mention, I enjoyed this article.
It was inspiring. Keep on posting!

Sun, October 21, 2018 @ 1:24 PM

6. wrote:
What's up everyone, it's my first go to see at this website, and post is truly fruitful designed for me, keep up posting these types of content.

Fri, November 2, 2018 @ 6:09 AM

7. wrote:
You need to be a part of a contest for one of the greatest sites on the web.
I am going to highly recommend this website!

Wed, November 7, 2018 @ 1:00 AM

8. wrote:
Greetings from Idaho! I'm bored to death at work so I decided to check out
your blog on my iphone during lunch break. I love the info you present
here and can't wait to take a look when I get home.
I'm amazed at how fast your blog loaded on my cell phone
.. I'm not even using WIFI, just 3G .. Anyhow, very good site!

Sat, November 10, 2018 @ 9:24 AM

9. wrote:
Hi would you mind letting me know which hosting company you're using?
I've loaded your blog in 3 completely different browsers and I must say this blog loads a lot faster then most.
Can you recommend a good web hosting provider at a honest price?
Cheers, I appreciate it!

Sun, November 18, 2018 @ 6:14 AM

Add a New Comment


Comment Guidelines: No HTML is allowed. Off-topic or inappropriate comments will be edited or deleted. Thanks.