if you don't see (aluminum) seams - its FRB (fiberglass resin board)...aka gel coat (usually).
How to Remove RV Gel Coat Oxidation - These 2 Simple Ways + Bonus Tip
a LIGHT cut or buffing will usually be more than enough.
I've experienced some oxidization on my basement storage doors (which are aluminum skinned) - for those i used a very light
Meguiars #9 swirl remover - its always best to test an area FIRST w/ the lightest abrasive and then increase the abrasiveness if necessary.
I had more oxidization on my (fiberglass) hood (flat surfaces) and used the same #9 and a light (electrical) buffing - it looks fantastic and is very easy to keep up w/ now...
to keep things looking nice i use Wash Wax ALL (
kit) when were on the road...
I have a local guy who polished my wheels (on site at our RV Storage)....
and now those are easier to keep up w/ too...
__________________
Don R.
'04 Haulmark (M42386) 42', 2 slide, 10kw -
Pictures
'04 F350 CrewCab Longbed 4x4, 50g aux tank & gear vendors dbl over