Causes:
Contamination of the surface before spraying.
Insufficient ground coat.
Insufficient topcoat.
Inappropriate thinner.
Final coat was exposed to high humidity before it was completely hard.
Continuous exposure to high humidity / contaminated air supply.
Residue of sanding water in corners, edges, rebates and below decorative strips.
Insufficient isolation of polyester.
A friend of mine with a specialist engineering company (manufactures high-end equipment for off-shore and marine use) even ventured to suggest that it could be contaminants in the raw aluminium. Apparently some cheaper sources of aluminium (Far East) are renowned for being less than 'pure' in content which could give rise to such problems in finished products.Anybody know where Morgan source their aluminium...
