Roger Long wrote:
I just called a plastic company to price half inch Lexan skylight
replacement. They said that, although Lexan is stronger, acrylic will
last longer in the sunlight and is more scratch resistant. They had no
idea what "longer" means.

If Lexan lasted 10 years instead of 20 I'd be happy. If it was 5
instead of 10, I wouldn't.

Anyone here have an idea what the real numbers might be for clear
skylights on a sailboat in the Northeast? Any other pros or cons for
one plastic vs the other?


-- Roger Long

I always understood that Lexan was more likely to yellow after exposure
to UV. Acrylic was used in WW2 aircraft windshields and those
windshields are as clear today as when they were installed. But all
Lexan is not equal with respect to UV resistance. You might try a
different supplier who can provide better information.

It would be very surprising if a Lexan skylight did not last 10 years.

Chuck

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