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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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| | | | Joined: Oct 2001 Posts: 428 Shop Shark | | Shop Shark Joined: Oct 2001 Posts: 428 | I painted a vehicle for a friend 3 years ago and now there are blisters appearing on several surfaces. I'm not talking about just a few blisters, there are thousands of them. The left front fender is practically covered with them. It isn't rust.
There was quite a bit of body work done by a previous owner and the car had been repainted at that time with what I believe was acrylic enamel. After sanding and prepping, I sprayed a sealer before applying the bc/cc. All components were made by Nason, which is what I always use, and I have never had this problem before.
What could have caused the blistering so long after painting? I know I will have to repaint but what can I do to prevent this from happening again? | | | | | Joined: Dec 2006 Posts: 443 Shop Shark | | Shop Shark Joined: Dec 2006 Posts: 443 | After 3 years ? Are you sure the paint is blistering from the underneath or is it enviromental damage to the top of the finish? I have seen fallout from power plants, and here in central Florida, fallout from phosphate mines blister the paint.
1957 Chevrolet 1/2-ton Stepside LB in the Gallery My Photobucket shots The person who has nothing for which he is willing to fight, nothing which is more important than his own personal safety, is a miserable creature and has no chance of being free unless made and kept so by the exertions of better men than himself." - John Stuart Mill (1806 - 1873) | | | | | Joined: Oct 2001 Posts: 428 Shop Shark | | Shop Shark Joined: Oct 2001 Posts: 428 | Most likely from underneath, never seen or heard of any environmental problems in this area that would cause such a problem. | | | | | Joined: Aug 2005 Posts: 6,377 Ex Hall Monitor | | Ex Hall Monitor Joined: Aug 2005 Posts: 6,377 | Probably something hiding in/under the previous paint job. One would think the sealer would have stopped any problems but obviously it didn't. It's possible the enamel you painted over is failing & taking your paint job with it. I would think the only way to prevent it from happening again would be to strip to bare metal before repainting.
Save a life, adopt a senior shelter pet.
The three main causes of blindness: Cataracts, Politics, Religion.
Name your dog Naked so you can walk Naked in the park.
| | | | | Joined: Oct 2001 Posts: 428 Shop Shark | | Shop Shark Joined: Oct 2001 Posts: 428 | Yeah Tiny, I was thinking that it would need to be completely stripped. Man what a bummer. | | | | | Joined: Aug 2005 Posts: 6,377 Ex Hall Monitor | | Ex Hall Monitor Joined: Aug 2005 Posts: 6,377 | Yep, been there & done that. Anyone who's done any amount of painting has painted over existing paint at some time or another. Your issue illustrates the chance we all take by doing that. If something was wrong with the prep/application of the topcoat you're painting over, your paint job will fail too. It's one of the hazards we face for not wanting to strip every job.
Save a life, adopt a senior shelter pet.
The three main causes of blindness: Cataracts, Politics, Religion.
Name your dog Naked so you can walk Naked in the park.
| | | | | Joined: Oct 2001 Posts: 428 Shop Shark | | Shop Shark Joined: Oct 2001 Posts: 428 | Trying to save time and labor and it comes back to bite you in the rear end. OUCH!!! | | |
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