Oxidation on gelcoat coming back...

[BobD]

I did a boat this weekend for a family member and on one side I used SAIII and on the other I used a different brand polish. The side that I used SAIII seems to be fine but the side I used the other polish is starting to turn white again already. Both where done using a wool pad and high speed and topped with Klasse. Anyone with more gel coat experience know what would be causing this to come back so fast?



Thanks!



p.s. it`s a not so well taken care of 85` 16` boat.

[Greg Nichols]

What is SAIII?



From my research Gel coats dont have any UV protection which is why they Oxidate in the sun. Use something like X-Kote?



I`ve also heard from others that using something like Megs #7 a day before buffing helps rehydrate the gel. My guess is your gel needs rehydrated before LSP.



Sorry bob, my ramblings are hyjacking your thread.

[imported_themightytimmah]

Oxidation gets pretty deep into the gelcoat, and sometimes you think it`s gone but it comes back. We used to have a plane like that at my old work - after 8 hours of compounding, it looked perfect. 3 weeks later - chalky again.



Sometimes you can cut deeper or wetsand and get all of the oxidation out, sometimes the only long-term solution is to repaint. If the SA3 side looks pretty good, then the competitors product probably didn`t cut deep enough.



Klasse is an interesting choice - I always preached the oil glaze and Collinite gospel when I worked on gelcoat, but I`d be interested in hearing how it looks/lasts.

[murf'n'surf]

Was one side worse than the other? Like the port side was stored facing towards the sun for 8 years.....

[Invigor]

Oxidation gets pretty deep into the gelcoat, and sometimes you think it`s gone but it comes back. We used to have a plane like that at my old work - after 8 hours of compounding, it looked perfect. 3 weeks later - chalky again.



Sometimes you can cut deeper or wetsand and get all of the oxidation out, sometimes the only long-term solution is to repaint. If the SA3 side looks pretty good, then the competitors product probably didn`t cut deep enough.



Klasse is an interesting choice - I always preached the oil glaze and Collinite gospel when I worked on gelcoat, but I`d be interested in hearing how it looks/lasts.

I did a fiberglass camper a few months ago, removed oxidation with klasse and then put 2 coats of collonite on it...haven`t heard how it`s doing, or if it`s even left the garage yet. But I`ll let you know when I know.

[BigJimZ28]

What is SAIII?

Danase Swirl Abolisher II





the other polish that you used was it something like Meg`s

that is full of polishing oils?



if so it could be that the gelcoat drank up the oils and hide the oxidation...just a thought

[BobD]

Was one side worse than the other? Like the port side was stored facing towards the sun for 8 years.....

The sides seemed to be the same. We don`t really know how the boat was sitting except for it sat for 5 years uncovered and in someones yard.

Danase Swirl Abolisher II





the other polish that you used was it something like Meg`s

that is full of polishing oils?



if so it could be that the gelcoat drank up the oils and hide the oxidation...just a thought

No, it didn`t have oils or anything in it. I`ve always been told not to use oils with a gel coat.



Thanks for the info everyone!