Used fiberglass dish

Trying to find out info about a used Comtech 3.8m fiberglass dish i'm looking at. My main concern is age(unknown at this time). How long until a fiberglass dish would just be considered junk? I'm sure it loses it's shape after sitting in the sun for a long time. There would be no way to fix this on a fiberglass dish. Trying to determine if it is even worth driving up and looking at.

We have a 3.8 meter Comtech solid fiberglass dish, 2 degree compliant. I bought it 17 years ago and it's solid as a rock. I had thought about replacing it but was told I don't need to.

Years ago a TV station i worked for installed a 4.2m fiberglass dish at the transmitter site (on a hilltop)...
The dish itself was assembled from 4 - 90 degree "quadrants" bolted together...a PIA to put together, but it worked well....until..
The "environmentalists" in the area complained the dish was an eyesore....so our station management - in an effort to appease them - PAINTED the dish DARK GREEN!!!
When the summer sun started blasting down on it.....it distorted enough to actually de-tune and cause signal fades and drop-outs!!
We were using what were THEN considered top-of-the-line, "low noise" California Microwave LNAs (85*K H, 89*K V)....the system used 70 MHz baseband input vs block conversion....
No problem during winter or other (cooler) times of the year, though, IIRC.....