Does primer have to be perfect before painting? The primer coat doesn’t have to be perfect, but it should cover the surface (no bare spots) and it shouldn’t be so blotchy that you get drips or visible unevenness.
Does primer need to be completely dry before painting? How long does primer take to dry? Primer takes between one and four hours to dry on average. However, the exact drying time depends on the primer type, room temperature, humidity, and the surface you’re painting. Most manufacturers advise waiting at least 60 minutes before painting over the coat of primer.
How thick should primer coat be? For a normally clean environment, a coat of up to 50 microns is considered adequate. For a dusty or humid location requiring constant servicing and cleaning, a thicker coat, say, up to 70–80 microns, is considered to be adequate. A thickness of up to 50 microns is possible through one coat of primer and paint.
What should primer look like before painting?
- Primer should have an even, uniform appearance.
- There should not be streaks, drips, or uneven coloration to your primer coat.
- It’s okay for the previous paint color to slightly show through primer.