The fiberglass french doors have been factory primed, but they suggest using a primer made for use with polypropylene and finish with an exterior grade acrylic latex paint.
1) What type (brand)primer can I purchase that will also be mildew resistant?
2) Can this same primer be used on the interior side of the doors also?
A great primer for this application is Zinsser 123 acrylic primer and it can be used for the interior as well. Another primer to try is Gripper. It is also 100% acrylic.