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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