ok well it sounded all well and good, they color matched my paint, said oh we can mix some up, and put it into a spray can, I'm thinking right on, well fast forward to today, i decide I have some time I go out, prepare the area on my front spoiler, where my car has met low lying obstacles, ,
do some sanding and a lil smoothing, clean it off, and get ready to spray it with my can of 17 dollar touch up paint,
well it matched perfectly, went on fairly smooth, then about a min after I spray the area, the part where I blended it to the original paint, starts to bubble up, I'm thinking WTF,
so I call the store I got the paint from, tell them what happened, they say chemical reaction,,,,,,, NO *&^(!!!!!,
so now im left with having to pull the front spoiler off, for what was just a lil area to be fixed, to having to sand and paint the whole thing, and all this is to come out of my pocket
now Im not trying to bash anyone or any company, but when you pay x amount of dollars on a product, and it does something messed up, like bubbling the paint, shouldn't they harbor part of the responsibility of fixing it, or at least tell you, "hey we'll mix this for you, and sell it to you, but after that its on you"
damn, now i have to pull my spoiler off, sand it down then take it to a shop and have them paint it, a 17 dollar fix turning into a $????? dollar fix

 

Did you use primer on the bumper first?

Also im not sure how you painted it but doing very light coats and letting each coat dry is the only way to do any form of spray paint. If from a can or the gun.

Just thoughts now so don't start screaming at me, because im not sure what you did or didn't do. Just looking for what may have caused it is all.

 

well I wasnt planning on doing more, then just a lil touch up, so I didnt primer it, just thought rough up the paint, and blend it, and shoot the touch up paint, , I shouldve went with some primer, but for the small area I was planing on doing, I didnt think I would need to go to that degree, ,
but I did call a shop here close to me, and they said that it'll probably cost about 75 to paint just the front spoiler, which I didnt think was all that bad,

 

Paint is strange sometimes. Could have been primer or just a bad batch, i seen moisture get in or under paint while being applied or drying and it would bubble and stuff.

75 don't sound bad, but shop around. I know a guy where i am at the painted my hood for 50 bucks, but he just does this on the side so.

 

So you don't know what you're doing and it's the companies fault?

Pull spoiler, sand it, spray the whole thing. Touching up small sections will never look good- just do it right the first time and avoid these headaches.

 

Could this be a reaction from the sanding? Did you claybar the spoiler, cuz I heard that paint will turn to crap if you have wax on your car, and you sand the wax deeper into the area. I know almost nothing about painting, so this is just a guess.

 

This is actually a reaction from the solvents in the newly applied paint. If you sanded the surface, you probably opened up the existing paint surface, thus allowing the new paint & solvents to lift that existing edge. This is not a problem with the paint, but actually the application errors. This is why shops seal those areas with a primer sealer to help eliminate this propblem. Another way to help minimize this is like stated above, light coats allowing plenty of dry times between coats. It sounds like the new paint and the old paint just simply had a chemical reaction. This is just something that you may have to face anytime you start painting over someone elses paint work and you do not know what they used previously. Not all paint is compatible with each other. I am not pointing fingers or throwing stones, its just part of paint work. It happens, even to the most exsperienced painters. Pull it off & get to the shop. Sounds like they priced it to you plenty cheap.