If you use glass I suggest safety glass or tempered. One of my students has
a friend who went through a glass window yesterday. Fourteen year old girl
with a stitched up thigh. Of course it could have been worse.
Karl

"Dave Lyon" wrote in message
news:3o68f.280231$084.27988@attbi_s22...
Most plastics will degrade when exposed to the environment. Consider using
glass, or one of the specialty plastics designed for solar collection.


wrote in message
oups.com...
I'm looking for sheets 4 x 8 ft or so to make a solar collector. I'm
wanting something that isn't too expensive and flexable.
Ken