How to Paint Interior Doors

🧰 Tools & Materials

Tools

• Screwdriver
• 180–220 grit sandpaper or sanding sponge
• Clean microfiber cloths
• 2–2½-inch angled paintbrush
• 4-inch smooth-finish mini roller
• Paint tray
• Drop cloth
• Painter’s tape
• Vacuum

Materials

• Mild cleaner or degreaser
• Wood filler, if needed
• Bonding primer, if needed
• Interior door and trim paint

Before You Buy

Choose a paint designed for doors, trim, or cabinets. These paints dry to a harder finish than standard wall paint and hold up better to fingerprints, cleaning, and everyday use.

Satin and semi-gloss are both good choices. Semi-gloss is more traditional for doors and trim and is especially easy to clean, while satin gives you a slightly softer appearance.

You may not need to prime the entire door if the existing paint is in good condition and you’re repainting it with a compatible product. Primer becomes more important when you’re covering:

• Bare wood
• Wood filler
• Stains
• A very glossy existing finish
• A major color change
• A surface where you’re unsure the new paint will bond properly

Before You Start

Decide whether you’re going to paint the door in place or remove it.

For most homeowners, leaving an interior door hanging is easier. You can paint both sides without finding somewhere to lay the door, and you don’t have to wrestle it off and back onto the hinges.

Remove the door knob and other easily removable hardware.

You can remove the hinges as well if you’re taking the door down. If you’re leaving it hanging, protect the hinges with painter’s tape rather than painting over them.

Place a drop cloth underneath the door.

💡 Pro Tip: If you’re painting the door while it’s hanging, wedge it securely in the open position so it can’t swing into the wall or door frame while the paint is wet.

Step 1: Clean the Door

Wipe down the entire door with a mild cleaner or degreaser.

Pay extra attention around the knob and along the edge people normally push with their hands. These areas can collect oils that interfere with paint adhesion.

Clean away any residue and allow the door to dry.

What You Should See: The door should feel clean and dry without greasy or sticky areas.

If Yours Looks Different: If you’re dealing with heavy grime or residue, clean the area again rather than trying to sand through it.

Step 2: Repair and Lightly Sand the Surface

Inspect the door for dents, chips, scratches, and old paint runs.

Fill deeper damage with wood filler if appropriate for your door material. Allow the repair to dry and sand it smooth. For smaller holes and similar surface repairs, the same basic prep process used when repairing and painting nail holes can help create a smooth surface before painting.

Then lightly sand the painted surfaces with 180–220 grit sandpaper.

You don’t need to remove all the old paint. The goal is to smooth imperfections and dull glossy areas so the new coating can bond.

Vacuum and wipe away all sanding dust.

What You Should See: The surface should feel smooth and look slightly dull rather than glossy.

If Yours Looks Different: Many interior doors have a thin molded skin rather than solid wood. Don’t aggressively sand these doors—light scuffing is enough.

Step 3: Prime Where Needed

Apply primer to bare wood, repaired areas, stains, or other spots that need additional adhesion or stain blocking.

If the entire door is glossy, unfinished, stained, or you’re making a dramatic color change, priming the whole door may give you a more consistent result.

Let the primer dry according to the manufacturer’s instructions.

Lightly sand any rough primer spots and remove the dust before painting.

What You Should See: Primed areas should be smooth and firmly bonded without heavy ridges or runs.

If Yours Looks Different: If discoloration continues bleeding through the primer, use a compatible stain-blocking primer before applying the finish paint.

Step 4: Paint the Detailed Areas First

If you have a paneled door, start with the recessed panels and molded details.

Use your angled brush to apply a thin coat inside the profiles and corners.

Watch the lower edges of each panel closely. Excess paint tends to collect there and create runs.

Don’t try to completely cover the old color with a heavy first coat.

What You Should See: The recessed areas should have a thin, even coat without paint collecting in the corners.

If Yours Looks Different: If you have a completely flat door, you can skip the detailed brushwork and move directly to rolling the larger surface.

💡 Pro Tip: Work on one section at a time so you can blend the brushed and rolled areas together while the paint is still wet.

Step 5: Roll the Rest of the Door

Use a smooth-finish mini roller on the larger flat sections.

For a paneled door, work around the panels and then finish the vertical sections along the sides.

Apply light pressure and spread the paint into a thin, even coat.

Check around the edges and panels for paint drips and runs before moving on.

If you’re painting the door while it’s hanging, open it periodically to make sure wet paint isn’t contacting the frame.

What You Should See: The door should have consistent coverage without heavy roller texture or obvious paint runs.

If Yours Looks Different: The first coat may look slightly uneven, especially if you’re making a large color change. Don’t keep adding paint to fix it. Let the first coat dry and allow the second coat to provide the final coverage.

Step 6: Sand Lightly and Apply the Second Coat

Allow the first coat to dry for the recommended recoat time.

Inspect the door under good lighting.

If you find dust nibs, rough areas, or small dried drips, lightly sand them smooth and remove the dust.

Apply the second coat using the same technique.

Keep checking the edges of the door and recessed areas for excess paint.

What You Should See: The color and sheen should now look consistent across the entire door.

If Yours Looks Different: If the previous color is still visible, let the second coat dry and apply another thin coat rather than trying to correct it with one heavy application.

Step 7: Let the Paint Harden and Reinstall the Hardware

Allow the paint to dry before reinstalling the knob or other hardware.

Follow the paint manufacturer’s instructions for handling and curing times. Paint can feel dry long before it has fully hardened.

If you removed the door, reinstall it once the finish is ready to be handled.

Close the door carefully the first few times and make sure the freshly painted surfaces aren’t sticking to the frame or door stop.

What You Should See: The door should open and close normally with an even finish and no sticking around the edges.

If Yours Looks Different: If the door sticks after painting, don’t immediately assume you need to sand it down. The paint may simply need additional curing time. If it still rubs or binds after the paint has hardened, use our guide to fix a door that sticks to find the actual contact point.

💡 Pro Tip: Leave the door slightly open when practical during the early drying period so freshly painted edges don’t sit tightly against the door stop.

🛑 Common Mistakes to Avoid

• Skipping the cleaning step. Oils around the knob can keep paint from bonding properly.
• Sanding too aggressively. Most previously painted doors only need light scuffing.
• Painting over the knob or hinges. Removing or protecting the hardware produces a much cleaner result.
• Applying too much paint inside panels. This is one of the most common places for runs to develop.
• Overworking partially dried paint. Once the paint begins setting up, leave it alone.
• Trying to get perfect coverage with the first coat. Two thin coats usually look better than one heavy coat.
• Closing the door too soon. Fresh paint can stick to the door stop and peel when the door is reopened.

Troubleshooting

Problem: I have paint runs.
Let the run dry completely, lightly sand it smooth, remove the dust, and touch up the area or cover it with the next coat.

Problem: The roller left noticeable texture.
Make sure you’re using a smooth-finish mini roller and aren’t applying too much pressure. Once dry, lightly sand rough texture before recoating.

Problem: I can see brush marks around the panels.
Avoid repeatedly brushing paint once it starts drying. Use a quality brush, apply thin coats, and let the paint level naturally.

Problem: The old color still shows through.
Allow the coat to dry and apply another thin coat. Dramatic color changes may need additional coverage.

Problem: The door sticks after painting.
Give the paint more time to cure first. If it still sticks after the finish has hardened, check where the door is contacting the frame before sanding anything.

Problem: Paint peeled off when I removed the painter’s tape.
Score along the edge of the tape with a sharp utility knife before pulling it away carefully. This helps prevent dried paint from lifting with the tape.

❓ FAQs

Do I need to remove an interior door before painting it?

No. Most interior doors can be painted while they’re still hanging. Removing the door can make certain parts easier to reach, but it also creates more work.

Should I use a brush or roller to paint a door?

Both work well together. Use a brush for recessed panels and detailed areas and a smooth-finish mini roller for larger flat sections.

Do I need to prime an already painted door?

Not always. If the existing paint is sound, clean, lightly sanded, and compatible with your new paint, you may be able to repaint without priming the entire door. Bare spots, repairs, stains, and difficult surfaces should be primed as needed.

What paint finish is best for interior doors?

Satin and semi-gloss are common choices because they’re more durable and easier to clean than flat wall paint.

How many coats of paint does an interior door need?

Two finish coats are common. Large color changes may require an additional coat.

Should I paint the top and bottom edges of the door?

Usually, follow the door manufacturer’s recommendations, especially with newer doors that may have specific finishing requirements. For an existing painted door, you generally don’t need to add paint to hidden edges unless they were previously painted or need protection.

How long should I wait before closing the door?

Follow the paint manufacturer’s drying and curing instructions. If possible, avoid leaving freshly painted surfaces pressed tightly against the door stop until the finish has had time to harden.

📞 When to Call a Professional

Consider calling a professional if:

• The existing paint may contain lead
• The door has significant damage
• The existing coating is peeling extensively
• You’re dealing with an unfamiliar specialty finish
• The door needs substantial repair before it can be painted
• You want a sprayed, factory-like finish and don’t have the equipment or space to do it safely

For most homeowners, painting an interior door is a very manageable project. The biggest difference between a rough-looking finish and a clean one is usually surface preparation, thin coats, and patience between coats.

Related DIY Guides

• How to Paint a Room
• How to Paint Baseboards
• How to Paint Kitchen Cabinets
• How to Fix a Door That Won’t Close
• How to Fix a Door That Sticks