Subscription

Categories

Instagram Pictures

Get inspired
We’re a big fan of #parkpuns, and an even bigger fan of all the awesome work our #BayArea members like the Resource Conservation District of Santa Cruz County are doing to protect the environment. So this Friday we’re featuring 6 of our member organizations in a fun quiz game to be held on Twitter @BA_OpenSpace from 11:30a-1:30p for #OSCQuizFridays. You’ll be a step ahead if you can figure out what we mean by a “fruitful” partnership.
@malt_ag is taking us to Hollywood and a galaxy far, far away for this week’s #OSCQuizFridays. If you think you’ve got your space movie trivia on lock (or have Google handy) join us on Twitter @BA_OpenSpace this Friday from 11:30a-1:30p for the quiz!
How to make a key rack from door latches by @terracycle's very own Chief Design Junkie, Tiffany Threadgould! http://bit.ly/1nzd4eG #upcycle #recycle
It is definitely time to utilize our #renewable #resources! #Ecofact
Want a chance to wine FREE goodies like t-shirts and pop up travel size dog bowls?? Enter our Green Festival Non GMO photo contest via our Facebook page or show up at the cafe in #chicago this weekend to upload your pics instantly for a chance to win!!
Will this sign hang above your booth? Tell your fans to vote! The winner will be announced at 3:30 on Sunday at the Green Festival Stage!
Congresswoman Nydia Velazquez, Council Member Carlos Menchaca, our #RedHook Local Leaders and more at NYCHA #Sandy update meeting last night. #NYC #NonProfit

Green Roof Drainage Mat

What is the best drainage mat for a green roof on a Brooklyn Brownstone? That is the burning question in our minds right now. Price, recycled materials, water retention, water drainage and shipping distance are some of the considerations in our search for the ideal mat.

Robie Anson is Eco Brooklyn’s current R&D guy for green roofs. Here is what he found today:

I found a drainage layer with deeper reservoirs and a root barrier built in. I e-mailed but didn’t get a response, so not sure on pricing, but it looked good: http://www.tremcoroofing.com/fileshare/specs/WaterDrain_GRS.pdf.

American Hydrotech makes a drain layer for extensive/intensive roofs that appears to retain even more water: http://www.hydrotechusa.com/product_data/PDS-GR30.pdf (nearly 3 times that of the Tremco product). This looked like it might work too (and be cheaper) but there’s no info. on water retention. Again, no pricing info.

JDrain makes some products that I think would work and may be cheaper (esp. if we use the standard 400 series, rather than the GRS) — I’m just not clear on water retention for the 400. (For the GRS, retention is not as high as the AH GR30.) Check here for options: http://www.j-drain.com/sub-product.php.

The search continues…..

Similar Posts:

PinExt Green Roof Drainage Mat

Leave a Reply

  

  

  

You can use these HTML tags

<a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <strike> <strong>