PV Gap

Hector Said:

is using Acetate rolls bad in a solar panel?

We Answered:

Acetate does not have good heat characteristics.

You can get acrylic sheet thinner than the usual double weight thickness, but it too gets soft when exposed to modest heat.

Polycarbonate/Lexan is a better choice if weight is a consideration because it is stiffer than acrylic for the same thickness. Otherwise consider single weight glass. That is only about 2 mm thick, and these you can get out of a picture frame from some mass market outlet's preframed pictures even quite cheaply or even from a picture framing shop.