Simply knock off the loose rust and apply rust encap.
Best paint for metal bilco doors.
A gallon of paint can cover a wooden or metal door without any hustle.
Over time dings and damage to the basement doors can wear away the primer and allow rust to form on the surface of the door.
Since horizontal surfaces are especially vulnerable to full sun and sometimes standing water or snow a paint suitable for other horizontal surfaces such as decks will hold up better.
Other bilco door models such as the classic series ship with a baked on coating of primer to guard against rust.
The paint does its best on interior doors.
Painting metal bulkhead doors by joe keegan on june 8 2011 at 11 13 pm old houses often had a set of bulkhead also called bilco doors which provided a large open access to the basement.
Bottom line the pewter color is pretty durable than white or off white color.
You can use your preferred tool for the paint job using this paint.
People who are confused about what color to paint bilco doors can use it.