<html><body><div style="color:#000; background-color:#fff; font-family:arial, helvetica, sans-serif;font-size:12pt">There are proven systems with 3" soil depths with sedum systems. Conservation Technology out of Baltimore offers a thin, light weight system. To protect the glass deck in summer from being a greenhouse, consider using outdoor carpet as a shade system. Attach for wind control. Indirect sun should be OK for most sedums. <br><br>You stated that the deck would be open on two sides and attached to walls on two sides. Consider a 2" gap along the walls to encourage ventilation. Plan for uplift loads!!<br> <br><div>David Wentling<br>ConservFirst.com<br><br></div> <div style="font-family: arial, helvetica, sans-serif; font-size: 12pt;"> <div style="font-family: times new roman, new york, times, serif; font-size: 12pt;"> <div dir="ltr"> <font face="Arial" size="2"> <hr size="1"> <b><span style="font-weight:bold;">From:</span></b> Tim Brown
<tim34@optonline.net><br><b><span style="font-weight: bold;"></span></b></font><br></div>I've followed some of your posts and<br>like your approach to work in the big apple.<br>Feisty clientele me thinks.<br>I'm 25 years in business doing roof gardens in Manhattan and a few in<br>Brooklyn.<br><br>When you say 3" green roof are you referring to soil depth?<br>This sounds a bit to shallow . I believe the light version of <br>green roof design calls for double that depth and only allows for use of<br>sedum type planting ( no
glass). 12" soil depth gives greater options for planting . <br><br>Covering with glass might work in winter but<br>not in summer for sure. You are sort of describing a cold frame<br>set up.<br><br>Weight issues are always a concern especially on brownstones unless<br>you are reworking roof structure. <br><br>Hard to give feed back with out some more clarification. <br>If decking is up 2' off roof surface than you have good depth for planting.<br><br>On Jan 24, 2013, at 5:34 PM, Gennaro Brooks-Church - Eco Brooklyn wrote:<br><br>> I just salveged some tempered glass.
I have a client who wants me to<br>> build a 3" green roof on his brownstone plus a deck that sits 2' above<br>> the roof.<br>> I suggested a glass deck and green roof under it.<br>> He is concerned the vegetation under the glass deck will not survive<br>> since it will bake in the summer.<br>> Are there any experienced landscapers on this list who can offer their<br>> experience?<br> </div> </div> </div></body></html>