[zcaveman]

I have had acrylic for 6 years and have not Had a problem with it. It is easy to clean, does not leak and is light weight. I don't see how glass is better than acrylic for "insulating" you from the heat. When it is 90plus outside glass will amplify more. I am very happy with acrylic. Check around before you succumb to the glass sellers. Sounds like a pig in a poke.

I think as long as they slide open they do no change you to a Florida Room type for taxes.

Please check acrylic vs glass vendors before you buy.