For some reason, the paint and primer is peeling off of our 3 year old steel exterior door. We need to repaint it. Is this better done by a professional or is this something we can do on our own. Do we essentially have to strip all the paint and primer off, rent an air compressor and spray painter, and reprime/repaint it? What is the minimum temperature to do this in (it's been about 15F for the last several weeks)? Where could get get a temporary spare door? Thanks in advance.
I would strip it off, and then make sure you get a good bonding primer made for metal. Depending on the door use a brush or brush and roller. If you use a roller, lightly brush over the area in one direction.