permaculture

["John D'hondt" <dhondt@eircom.net>]

I don't know anything about your specific plastic windows but most all clear 
plastic will turn opaque in sunlight. I can't immagine you will have a clear 
outlook for ten years and possibly a good bit shorter if the plastic is not 
specially UV protected.
John

We just found an extremely cheap source for insulated plastic windows 
(double pane).

My questions is: Does anyone have experience with using these? Especially 
versus glass?

I cannot find much infomation on their efficiency letting light in, 
retaining heat, etc.
We cannot afford a glass greenhouse right now, but if the drawback of 
plastic windows are relatively small we might piece together one.

Thanks all.
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