I'm at a loss! I've just repainted the garage side door and the paint hasn't covered correctly - particularly on the plywood panel.
The old paint was burnt off - the door sanded down and then imperfections filled. Re-sanded and then two coats of primer/undercoat applied. Finally the top coat was applied.
There are areas where the paint has not covered the undercoat correctly. It looks as if the pigment has not covered even though the liquid has. It looks ok when first applied but within a short time the undercoat can be seen again.
Any suggestions!
Thanks
Sam