Leave them unpainted so the door can expand and contract with changes in humidity.
Best paint for bedroom doors.
If you are going to paint a plain flat door use a foam roller to roll on the paint and use an angled brush to paint the sides.
Run two or three roller widths the full height and across the door face.
Paint a flat door with a brush pad or roller with a 1 4 inch nap or foam sleeve.
If not either use a mini painting pad that enables you to paint the bottom edge or remove the door from its hinges apply a sealer to the bottom edge and rehang the door to paint the rest of it.
Don t paint the top or bottom of a door the narrow parts that aren t visible when the door is closed.
To remove any lines lay off the finish by brushing from bottom to top with a lightly loaded brush or lightly coated small roller if desired.
After selecting your paint base you need to determine whether to buy indoor or outdoor paint or an indoor outdoor combo and the sheen you want for your door.
Remove the door knobs and all other hardware from your interior door to simplify the paint application.
Rolling a flush flat door.
For interior doors we recommend the diamond brite paint 31000 which is specifically designed to protect high traffic surfaces.
Outdoor is an easy decision.
Tips for plain doors.
The right paint should protect against dirt and human oils as well as the force from opening and closing which can cause dry paint to crack.
If you re replacing the old hardware make sure the new hardware will match.
Apply the paint with a 4 inch closed end foam roller.
Next paint the door s surface.