Originally posted by CafeenMan
I had some monokote that was stored for almost 10 years (3 rolls). When I tried to use it, it would simply fall apart when I pulled on it a little. It had become brittle as a leaf. All three rolls were transparent monokote that had been opened. They were in gov't storage and I don't think they were climate controlled.
Transparent covering is another story. I find as that ages, it is very difficult to use. I have a couple old rolls I use for patching old gliders, but the transparents get bad. If it gets too old, you can't fix the holes in it with heat or you make bigger ones. Don't find that as much with the solid colors.