Megane Spoiler paint

[andybond]

This is probably suitable for a pm to @Haz but I thought I might ask here ...

Someone painted my R26R spoiler. Badly.

To cut a long story short , its shit. The paint bubbled and reacted to the existing paint, some sank , some blister and some split.

What now ? sand it down ? With what grit ?

What would you use to seal it , to stop the reaction happening again ?

Any recommended rattle cans to repaint it ? I really, really cba taking it off the car again so was going to mask it up and paint while on.

 

[DaveL485]

Take it to a body shop.

 

[Andyquadra]

Take it to a body shop.

he's from up north, so tooo tight! bet he's thinking of using a masonry drill bit to remove the paint! LOL

 

[andybond]

It went to a bodyshop to get the paint in the first place.

I would like to have a go at myself then send to bodyshop after I have cocked it up.

 

[Haz]

Didn't spot the tag sorry.
For what it's worth you'll need to remove all the new paint 320 dry, or a prefer 400 wet. Block it back until it's all blemish free.
Depends on the type of reactions, any pics? But usually tiny bubbles are because they haven't used an air drier between compressor and gun, so it's water droplets (micro blisters). As they warm up and cool they expand and contract causing the paint to pop off.
If this is the case then just normal primer and paint.
If it's a solvent-water based-2pack based reaction then you'll want to use bar coat, alcohol based primer that doesn't react with any of the above.
Rattle cans are pants. The metallic isn't so bad, Halfords and the likes are waterbased and a paintshop will give you the 'proper' stuff in an aerosol, but it's getting the laquer on nice, generally the more expensive it is the nicer it is. Warming the can up will help it flow but go off faster.
Really though, £60-£100 to have it done on the car so no point getting your hands dirty

 

[andybond]

Ill take it to a bodyshop to get it tarted up then.

The paint has basically split and torn. It has then sunk on the top.

Just looks bloody awful !

 

[Haz]

Are the edges crinkled and peeling back? That's usually an over thining issue.
If it's just like cracks then possibly it's a 2pk over cellulose reaction.
Either ways, a bodyshop, as they'll be able to see how far back to take it. If you have a go yourself and not familiar, chances are it will do it again.

 

[andybond]

Its like the paint has cracked on top of the other paint. Bit like if you pulled off say for instance plastidip.


Bodyshop it is ...

 

[Haz]

The new paint is shrinking and pulling apart then? I had a car like that years ago, painted it look fine but next day hairlines appeared and gradually got worse. Buzzed it back and tried again, was even worse as I'd gone further into the original paint which was the issue. Third time zero thinners, better but still came back which is how I came across bar coat primer. Full respray too

 

[andybond]

Exactly like that ! Was fine for maybe two days tops ...

 

[Haz]

Can't see it being cellulose orignally, poss acrylic? Just wants a good flat to where it looks nice again, bar coat, reprime and paint. Will prob cost half of what you'll pay at the bodyshop to buy the materials anyway, and at least you can take it back should it fail. I'd redo it for free if it happened to one of my jobs, take it on the chin as reputation is more important than making a few quid.

 

[andybond]

The guys who did it originally said , ah sometime that happens. £50 and Ill sort it.

I declined. They did my wheels for me as well , and they have started to flake in places as well.

Wounded , but lesson learnt.

 

[Haz]

It can happen, and to be fair it's not the bodyshops fault as its just a chemical reaction and they're not to know what was used on it before they got it (although you can smell the difference when prepping).
That's the problem these days, lots of places trying to be competitive. To keep costs down corners are cut, cheap paint, quick prep, things masked up. The day it rolls out 2 cars can look the just as good, it's how long it lasts it what you pay for. There's lads round here doing full hits for £600-£800. It costs me around £300 just for good quality materials and will take me 3x as long because I remove items so edges can be properly prepped so they don't flake after 6mths/year.