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.