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just wanted to repaint using brush on the underside of a board..seems like paint's chipping off and showing second skin which is ocher in color. Am no handyman and got no spray paint gun.. Do I use laquer, acrylic etc. sand it down first and coat it with something to keep it smooth and clear? Am really just planning to sand down the thin paint remaining, sand it again then brush paint it then sand again..any easy suggestions that wouldn't eat thru the board's skin would be nice.. regards all
thanks keef was about to enquire about acrylic but it must be more toxic to fiberglass
Fibreglass should be good with any paint you put on it, but if there's any chance of it getting to the core foam, you need to seal that first with an epoxy resin.
Most enamels are un-sandable the gloss is on the surface underneath is oily. If I'm not using 2 pack spray paint I use automotive lacquer.
if you are not going to spray for god's sake don't use a brush. Use a foam roller you have half a chance then, especially if it is applied thick enough to juussst run a bit so it will kinda self flatten
Give it a good week in the sun and you'll be able to buff out any roughness
am guessing
that the ocher colour is the fiber glass.. so am planning to lightly sand the whole underneath including the fiberglass? will try to use better auto paint than just enamel and what am thinking is maybe more lacquer thinner to spread the paint better, sand it then a second coat to the deeper chip-off's then sand again for smoothness but what kind of top coat would be best for clearness and smoothness?
That colour is probably the filler they apply then sand back before painting. You should do the same. Do not try to sand out chips, then you will just have a low spot that stands out afterwards. You need to fill them
Fill all of them with spot putty (auto stores have it) and sand back board with about 240grade WET with a BLOCK. Use of a sanding block will ensure it is flat.
The paint the whole thing with a high build primer (also called spray putty) then sand (block) back again to 240 grade.
What you will have then is a white board with nice coloured swirls and dots all over it where the spray putty has filled tiny scratches that you didn't see.
Now it may be ready for paint.
When Goran from Koma Surf here in Southport repaired the paint job on my old fibreglass Farrelly windsurfer, he used automotive spray paint as it stands up much better to UV than ordinary house paint, even exterior types. He had to colour match the existing pattern, but if you're painting the entire bottom of the board, you could go to Supercheap Auto or somewhere similar and buy a couple of spray cans of a suitable colour. If you take your time and spray lightly, laying down a couple of coats rather than trying to flood the surface with one heavy coat, you should get a nice smooth finish, far better than you'd ever get with a brush.
Cheers, Glen.
^^^ you don't have to worry about it. I don't know why you are
Use the cans you wanted to use from the auto store (lacquer based acrylic) and that is why I suggested spot putty and spray putty (high build primer) from the auto store as they are all compatible products.
am pretty sure you're right Markey
i've never done anything like this before that's why .. and the wrong stuff might just burn or eat anything..
