I purchased a wood front door with glass inserts for an apartment in coastal San Diego in 2003. The front patio area in the four years after I purchased the door had a problem with water ponding or pooling during heavy rains. As a result, it took a long time for things to dry out and the the lower part of the door received heavy mold stains. That problem has now been resolved. I sanded and oiled the door with Watco oil in 2009 and 2010, but it didn't entirely remove the mold stains. Do wood doors take well to paint and would I have to remove the door to paint it? It was extremely difficult to install the door because the door frame was at an incline. If it's better to replace the door, is there a such thing as mold or weather proof doors for a high salt (coastal) environment?