How to prevent sidewall yellowing?

[RobG]

If all goes well, I will be picking up a new 2019 Arctic Fox 992 truck camper over Labor Day Weekend. As a fulltimer in a 5th wheel toyhauler (which is now 12 years old), I'd love to know a good way to keep the fiberglass walls on the camper from yellowing the way they have on my 5th wheel.

My 5th wheel is one of those wonderfully-built (note: sarcasm) Keystone Raptors. Delamination has been a huge problem too; in fact, the RH sidewall has already been replaced (with fiberglass from Northwood, btw, the same people who build Arctic Fox). Three years in and no yellowing so far, BUT, it also faces north.

Sorry... that was a bit of an anti-Keystone rant; I do it whenever I get the chance.

So... trying to decide to best way to keep the new camper looking awesome. One thought is to keep it wiped down with that F21 anti-UV spray. Downside is it attracts dust. What about wax? Is there any wax good enough to block the intense Arizona sun? I don't have the option to store it inside and using a cover would be a major PITA when I plan to use this thing at least 2-3 times a month.

I would appreciate any insight!

Rob

[beemerphile1]

Paint over the gel coat.

[RobG]

Somebody else also recommended "303 UV Protectant" so I think I will try that. Thanks!

[Chum_lee]

Ultra Violet light (UV) is NOT your friend. Avoiding it is the best policy but not always possible when you are outside.

Using a quality marine/aircraft grade polymer (non-wax) protectant frequently does help. They are expensive, but, they work.

I'm not promoting this product/company specifically, but, regularly using something like it is a step in the right direction.

https://www.nationalsupplydirect.com/303-aerospace-protectant-gallon-refill.html?gclid=EAIaIQobChMIpsiK7In-4wIVjxitBh0m7QSsEAQYAiABEgIawPD_BwE

Chum lee

[Rover_Bill]

IMHO you should be looking at specific Marine/RV products for your fiberglass protection rather than Automotive products. Fiberglass is covered/protected by a Gel Coat finish which is totally different from the Clear Coat finish on cars/trucks.

Meguiar's Fiberglass Restoration system put a mirror shine on my TT dull, chalky, fiberglass endcap. I don't know if it will work on yellowing. Here's a link to Meguiar's Marine/RV products.

[MEXICOWANDERER]

I learned that using a polymer rather than a standard wax or polish lasts a lot longer in intense sun.

Would it do what your list demands? Which is a tough row to hoe?

Who knows? Sun rays can be brutal.

My choice in polymers is Nu Car Finish. Follow directions exactly