I have a number of Corintian 'impression' doors. These have a moulded pattern in what appears to be a white primed MDF facing. I am getting close to painting them - air spray with Aquaenamel most likely - I did read the threads about its downsides.
Question 1. Do I need to (or should I) prime them before coating? The DULUX shop says 'of course you should prime them with our primer ....'. Is this a ploy to sell more paint? or has somebody had a bad experience from not priming.
Question 2. Not doors, but architrave painting. I was wanting to pre paint my mouldings before fitting. Given I will have brad nail holes after fixing I am thinking about spraying the base coat on and doing the final coat sometime later. Is there a problem (or proceedure) if the second coat is not for 1,2, 12 months?