When my wife and I purchased a new door for an outdoor structure we were building, it arrived unpainted. My wife drew the task of finishing the door, and once she had the primer coat on, our contractor asked if she had painted the top and bottom of the door. “Unpainted door bottoms or tops will absorb moisture and, over time, will warp because of it,” he advised.
No, she had not. The door is heavy, and we wanted to avoid removing it from its hinges if possible. Yet the door bottom is low to the floor, with little access room for a paintbrush.
Our contractor, Brett Alcorn, suggested a clever solution. “Just saturate a piece of old carpet scrap with your paint and run it along the bottom,” he said.
We did just that. A quick check with a small mirror showed a nice, even coat of paint on the door’s bottom edge.
Arthur R. Lee, Santa Cruz, CA