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Old 20-09-2018, 16:41   #1
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Kevlar UV protection

After having some 3/16" polycarbonate cut for deadlight replacements,I learned that the material, while considered "UV stable", is essentially only good for about five years. I have read that a Window-tint film is useless because PC continues to outgas, creating bubbles. There are a couple of aerosol-applied products, "Krylon UV-resistant clear" and what seems to be a Rustoleum counterpart. Has anyone had experience with either product or must I resign myself to replacing the deadlights after five years? Thanks in advance.
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Old 24-09-2018, 04:24   #2
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Re: Kevlar UV protection

Ken
I was interested in your query so I did a little research and found an article which may be of interest.
Ultraviolet Resistance of Engineering Plastics
San Diego Plastics - Ultraviolet resistance of engineering plastics

Clive
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Old 24-09-2018, 04:28   #3
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Re: Kevlar UV protection

Ken

Good question. Maybe do a search on "Ultraviolet Resistance of Engineering Plastics" for quite an informative article.

Clive
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Old 24-09-2018, 05:13   #4
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Re: Kevlar UV protection

Thanks, Clive. Been researching this until I'm blue in the face (not pretty), including sundry websites and other sources. Until I get some feedback on the Krylon/Rustoleum coatings option -- which is only dealt with generically on the sites I have visited -- I'm kinda stuck. Mind you, with haulout (Ottawa, Canada) only a few weeks away, I've left my outer frames in place and the boat will be covered through the winter, so I have time. I had considered Acrylic but I have a curve to deal with and heating and bending would have been a pain. Once the outer frame is removed, I plan to affix the Lexan with 3M VHB tape and run a bead of Sikaflex 295 around the tiny gap left when the VHB is in place.
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Old 24-09-2018, 06:06   #5
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Re: Kevlar UV protection

Nothing is as good as a cover. These are DIY, easy, and quite cheap. Slight curves are fine.

https://www.practical-sailor.com/iss...s_11948-1.html


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