- If the door is wood, lightly sand the surface. An oil base paint can be put on top of a of an oil primer or latex primer. Latex paint cannot be put on top of an oil based primer. Acrylic paint can be put on top of an oil base primer.
- If the door is fiberglass, metal, or steel, make sure the surface is clean. Oily residue will cause the the undercoat to fail and blister. Wash the door and allow it to dry completely. If necessary, use a stripper on the door to remove old paint. Check with your quality paint store or qualified painter to ask the type of stripper to us. Even experienced painters ask the paint stores and paint representatives for the best products to use. If using a stripper, power wash the surface after to remove residue.
- Allow the door to dry completely before priming or painting.
The preparation seems like a lot of work, but it pays off because you have a surface ready for paint. Nothing is more
discouraging than painting a door and having it fail.