Actually a roller can be a great help if used together with a brush. (I also highly recomend adding product called "FloTrol" to your paint. It is a spraying and brushing agent and is widely available.)
Using a "small diameter" trim roller, apply paint then use a good quality 2 or 2.5 inch dry angle brush to immediately "tip out" the wet paint. (light, smooth, straight strokes which remove any roller pattern and paint pooling.
This method can cut door painting time by 75% which is great if you are doing many interior doors. It is also fine for knocking out an exterior door quickly with perfect results.
more » respond »
Novice