You are right that PPG and Dupont WONT warranty their paint to a home user, can you blame them.
To get the PPG warranty you need to be a PPG certified shop and the paint in question had to be applied by a PPG MASTER certified painter. Granted just because one is PPG cert it doesnt mean they did it right. But more then likely if the shop is gonna go throu the hassle of getting those certs along with the painter they more then likely dont cut corners.
Am a PPG MASTER certifid painter and its not easy to get. I just dont see a hack spending all that time and money.
The problem with soda blasting is getting rid of the film left on the surface. As Dupont pointed out as long as the metal is clean its fine. But the problem lays with getting it clean. Try getting two guys that do soda blasting to produce the same answer on removing that film? Not gonna happen. Also using a mix of vinegar might not work depending on the soda used, as there are more then one.
Soda blasting doesnt remove rust anyway, so why not use plastic media instead. Plastic is used on fiberglass and aluminum. If any rust is present they come back with glass beads.
I know guys that have had good luck with soda I know guys that had nightmares with it. Im just saying I believe there are better methods out there then soda...Eric
