A freshly painted interior door can add a surprising amount of personality and style without the cost of new furniture or décor.
Casey Finn of The DIY Playbook shows Tanja Babich how to paint an interior door for a smooth, professional-looking finish while avoiding common mistakes like drips, brush marks and uneven coverage.
Supplies
Painter's tape
Paint brush
Foam roller
Interior paint
Drop cloth
Paint pail
Clean rag
Utility knife
Screwdriver (to remove hardware)
Step-by-Step Breakdown
Step 1: Prep the Door
Before opening the paint can, take time to prep the surface.
Remove the doorknob and any hardware, tape off hinges and give the door a good cleaning. Dust, dirt and grime can prevent paint from adhering properly and affect the final finish. Casey Finn recommends wiping down the door and making sure it's completely dry before you start painting.
She also recommends satin or semi-gloss paint for interior doors because those finishes tend to hide fingerprints better than flatter paints.
Step 2: Paint the Detailed Areas First
Start by using a brush to paint the recessed panels, grooves and detailed sections of the door.
This process, often called "cutting in," allows you to reach areas that are difficult to cover with a roller. Use light coats and resist the temptation to overload the brush with paint.
"If you're getting drips, you're using too much paint," Casey Finn explained.
Step 3: Roll the Flat Sections
Once the detailed areas are painted, switch to a foam roller to cover the flat surfaces.
A foam roller helps create the smooth finish typically associated with professionally painted doors. Work methodically and roll the panels first, followed by the horizontal rails and then the vertical stiles.
Thin, even coats are key.
"Don't expect it to cover on the first coat," Casey Finn said. "You just want it to be light."
Step 4: Know Where to Stop the Paint
One of the most frequently asked questions homeowners have is what to do when a door is painted one color on one side and a different color on the other.
According to Casey Finn, the door edge should match the room the door swings into. For example, if one side of the door is white and the other is navy, paint the edge so it matches the color visible when the door is open.
It's a small detail, but one that creates a more polished and intentional look.
Step 5: Let It Dry and Add Another Coat
Patience pays off when painting doors.
Allow the first coat to dry completely before applying a second coat. Avoid going back over areas that have already started drying.
"That's a big mistake people make," Casey Finn said, explaining that reworking partially dry paint can pull up the finish and create uneven results.
Darker colors may require two or even three coats to achieve full coverage and eliminate light spots showing through.
Pro Tips from Casey
Use a foam roller to minimize brush marks and create a smooth finish.
Multiple thin coats look better than one thick coat.
Avoid overworking paint once it starts drying.
Satin and semi-gloss finishes are good choices for doors because they help hide fingerprints.
If you're painting a door two different colors, paint the edge to match the side the door swings toward.
Try the Color Drenching Trend
Looking for a designer-inspired update? Casey Finn recommends painting doors and trim the same color, a technique known as "color drenching." The trend can make a space feel more custom and high-end. For this project, Finn used Valspar's Chimney Smoke in a satin finish, a deep navy shade that creates a bold, cohesive look when carried across doors and trim.