A quick question for the experts: I want to paint a steel garage door.
Most of the old paint is intact but some is not. I have given it a
fairly heavy rub down (power tool and wire brush). I have a tin of
primer available. Should I prime the whole door for consistency or is
it better just to spot prime the areas where the paint is missing? The
time involved is not an issue. I just wonder whether paint - primer -
paint is asking for trouble or does primer stick to anything?