The temperature makes the difference
WHICH HARDENERS AND WHICH REDUCERS SHOULD BE USED IN 2K PU TOPCOATS AND CLEARCOATS? The temperature table provides a clear and straightforward overview about what product is suited for use at a particular temperature.
Mostly light, whitish circular spots / lifting of the paint surface caused by water drying on the surface in combination with lime and salt. The inner areas are normally intact, while the outer edges are slightly lifted.