Olustee bus

Years ago I had my 63 stripped to the glass and repainted. It was not too long before the paint blistered. The blisters were tiny spots all over the top, hood and upper rear sections. I did not have any on sides, below the belt line.

I was told and always thought that this was due to water being in the painting system. Could it be solvent not being cleaned off sufficiently?

Why would the blisters be only on the top (horizontal surfaces) of the car?

One other thing - the paint looks thin. I have not sanded it yet but it looks like after a few swipes, I would be to the primer the painter used. The primer seems to be on solidly, not peeling or blistering. Should I restrip or sand all the paint off to the primer? That paint coat is the only coat of paint on it.

DansYellow66

I doubt it was moisture. That is usually evident pretty immediately. Probably solvents, incompatibility of primer to finish coats or something of that nature. Some chance it could be environmental issues but unless you leave it parked out a lot that's not as likely. Do you know what type of paint was used - enamel, lacquer, urethane?

Dan

Chrisintampa

same thing happened to a cutlass i have. it only appeared after the car sat outside a few times. they had to start all over - what a pain. the assumption was that since it was a metal bodied car - it wasnt prepped and moisture was in the metal and bubbled the paint.

Grey Ghost

I would go all the way back down to fiberglass. I agree with Dan. I think moisture or water in the lines would show up immediately. Sounds like solvent pop to me...where its trying to off-gas and blows bubbles through the top coat in doing so.

Double Venom

I'm late on this and only going by your description, Water/moisture is almost always blamed for this problem and truth be known it is really rare for it to be the problem. The best question I see posed here is 'what type of paint'? I'd almost bet by your description it is lacauer.

"Bubbles' on the top, none or very little on or below the belt line. First indication that the paint was put on to quick - between coats- not allowing the previous coat to 'flash off' or the coats were simply put on to quick/sucessive. Chances are you could just sand down to the primer, making sure it to is sanded well, then putting on another coat of sanded primer, two high quality coats of -two part-sealer and repaint in your paint choice. Hope this helps and that it makes sense to you.

DV
PS... a water problem would have shown up immediatly and I'm sure had it been there when you picked up the car---you wouldn't have. By the way greyghost describes it great-solvent popping appears to be the real problem.

vetzs

I had something similair happen on a 72 vette I had. What I finally came up with was that the car was inside a garage equipped with an evaporator cooler. The hard water used for the cooler was misted over the vehicle. Not realizing this, and not having a car cover on the car led to little pits from the hard water.

Olustee bus

Good suggestions, thsnks. I am going to sand down to the primer everywhere and then see how solid the primer is. The guy ( a corvette "specialist") held my car for a long time. I began to pressure him to finish. He probbably started it a day or two before he promised it to me the last time.