15-11-2017, 01:35 PM
No doubt at all that POR15 is jolly good stuff. However, that 3-stage (actually, 4 stage, if you want uv resistance) process is difficult to manage on a floorpan in situ without leaving a general mess elsewhere. It is also a barrier coating, which is fine for whole parts, but less fine if there is a painted edge under which corrosion can creep (e.g. from the floor to body joint). I can't help wondering how well other coatings (including Hammerite) would fare if they benefitted from the same religious preparation incl. phosphate coat. Fact remains that it is overkill on a typical Austin Seven - most of our cars don't go out in the salt and snow much!