[GBlist] Low tech green roof

[David Del Porto <daviddelporto@ecological-engineering.com>]

For many years we have been using Raven Industries 40 mil Rufco EX 40 
linear low density polyethylene for our wastewater gardens.  It has 
withstood the attempts of bamboo rhizomes to puncture it and will not 
degrade if not exposed to UV.  While I know of no applications for green 
roofs I know of no reason why it should not be used.  The price is around 
$0.29 per square foot plus freight from their nearest plant, say South 
Dakota.  The web site is http://www.ravenind.com and the toll-free number 
is 800 635 3456.

David Del Porto
Ecological Engineering Group
50 Beharrell Street
Concord, Massachusetts 01742 USA
Phone:   1 978 369 9440
Fax:       1 978 369 2484
E-mail:    info@ecological-engineering.com
Web:       http://www.ecological-engineering.com


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