I'm taking the old style frame windshield off my boat and replacing it with something lower and neater. Which material holds up better, plexi or acrylic? Plan to use 1/4 inch thick material. Would heat affect one more than the other?

Not the heat so much at the UV from the sun would be my guess.

I had replaced an older scarab windshield due to damage. I had used 1/4' polycarbonate, which is virtually in-destructable when new. Seemed to last about 3 years in Ohio sun. The poly got stress cracks but never broke. I had put a pretty hefty bend in it and did not heat it. Your best bet is to find a plastic shop and heat form it. Try Solstis plastics in Michigan

AGGRAVATION28,

Check out Mcmaster.com and search for Abrasion-Resistant Polycarbonate here's what they claim:

"Resists abrasion to maintain clarity better than other polycarbonates. Resists UV degradation and withstands harsh cleaners and solvents. is's a poor electrical insulator"


I've used it for underwater windows in industrial aplications and it's maintained it's clarity for at least 9 years but their indoors so there was never any exposure to UV rays.