I just came across the German publication, Der Optigru"ner; das
Dachbegru"ungs-Journal (www.optigruen.de) which gives examples of roofs,
layering, roofing firms, seminars/workshops, etc.
On Fri, 15 Nov 2002, Ellen Chapman wrote:
> Don't know of any, but am skeptical that anything on a roof can be
> waterproof, especially "forever." The mere fact that humans will be
> walking on it to tend to the plants, clear clogged drains, etc. means
> possible damage to the waterproofing layer(s). And the watering of the
> succulents, however infrequently, makes me nervous. Recommend buying lots
> of plastic sheeting for those unexpected leaks. Could run-off be filtered
> or otherwise treated after it leaves the roof?
>
> |((| Ellen ("Expert observer of library roof leaks") Chapman
> |))| University of Hawaii at Manoa Library
>
>
> On Thu, 14 Nov 2002, Klos, Sheila wrote:
>
> > Co lleagues,
> > I'm interested in learning if anyone knows of a library recently built or
> > renovated that has incorporated a "green roof" in its construction. By this
> > I mean a roof specifically structured to take the weight of a waterproofing
> > layer and 3-5 inches of soil (or soil-less mixture) into which are planted
> > succulents, the purpose being to slow down the rate of runoff and to filter
> > this runoff in an environmentally responsible way. I know about the
> > Chesapeake Bay Foundation and several European commercial buildings and
> > their green roofs, but I don't know of any libraries.
> > Thanks,
> > Sheila
> >
> > Sheila Klos
> > Head Librarian
> > Dumbarton Oaks Research Library
> >
> >
> >
>
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