I mixed up paint tins and instead of applying a primer/undercoat first I have applied satinwood wood and metal paint directly to dark green bathroom-quality hardboard. The bathroom doesn't get condensation. What's the worst that can happen? Should I put primer/undercoat on top of the satinwood or just do a final coat of satinwood?
Satinwood is basicly 75% undercoat yes but a primer is still needed, But would be like going for a bath and trying to wash yourself with your clothes on priming after coating. There is nothing you can do now but i would expect it to flake in time.