After undercoating a windowsill I let a piece of masking tape fall onto it. I had already cleaned the brush I had used so I didn't want to try and brush the mark out. The tin, Dulux Trade Undercoat, advises one coat undercoat followed by two gloss coats. Is it OK to let the undercoat dry, sand the area and recoat?
Can't see a problem, I frequently put on 2 undercoat, followed by 2 top coats on, never had a problem in 30 years or so doing that. In fact outside doors & woodwork was done that way five years ago here, hasn't come off yet.
Superior as in up to 8 years protection as the Weathershield paint system is flexible (in other words moves without cracking leading to early degradation).