Bad joint between top coat and primer, or between top coat and existing paint, or between primer and bare metal. Common Cause Main...

Top coat lifts the undercoat, which causes wrinkling, expanding and bubbling. Common Cause Spray top coat before undercoat dries....

Beautiful shine of wet film but loss of gloss as the film dries or ages. Common Cause (1) Coarse substrate and rough sanding paper lead...

Small bubbles in the top paint film, some burst. Common Cause It is often seen that more or less moisture goes into the paint film, even...