Interior Painting in Naperville, IL
Trim, door and baseboard painting in Naperville, sanded and enameled properly
Chipped baseboards, yellowed doors or oak trim you are tired of? Trim is where a paint job looks sharp or sloppy, so every piece is filled, caulked, sanded and enameled.
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Updated September 2026
This job
Trim, Door & Baseboard Painting
Interior Painting · answering 24/7
Quick answer
Trim, door and baseboard painting in Naperville, IL means filling nail holes, caulking gaps, sanding and applying two coats of a hard enamel by brush. Converting stained oak trim to white adds a stain-blocking primer so the tannin does not bleed through.
The job
Trim needs harder paint and cleaner prep than walls
Trim takes kicks, vacuum bumps and hands, so it needs an enamel, not wall paint. The finish only looks sharp if every nail hole is filled, every gap caulked and every surface sanded so the enamel lays flat.
We paint trim by brush, sand lightly between coats and pick the sheen with you, usually semi-gloss or satin.
What moves the price
What trim and door painting costs
Trim is priced by linear feet and door count more than by room size.
- 01Linear feet
Baseboard, casing and crown are measured by length.
- 02Door count
Each door is painted on both faces and all edges.
- 03Condition
Dents, gaps and old drips add filling and sanding.
- 04Stained to white
Oak conversions add primer and often a third coat.
- 05Detail
Built-up crown and paneled doors take longer than flat stock.
- 06Occupied rooms
Furniture and carpet protection add set-up time.
Published cost data for small interior painting and staining projects (HomeAdvisor Chicago-suburb project cost data, September 2026): $300 to $1,375 typical. A planning range, not our quote.
What this job covers
A
Baseboard and casing
Baseboards and door and window casings take the most daily wear. We fill nail holes and dents, caulk the gap along the top of the baseboard and at mitered corners, sand the old finish so the new enamel grips, and cut a straight line where trim meets wall. Two coats of hard enamel go on by brush, sanded lightly between. Carpets are protected with tape and a shield, so the bottom edge of the baseboard gets painted without paint on the carpet.
B
Interior doors
Six-panel and flush interior doors are painted panels first, then rails and stiles, following the grain direction so the finish looks right. We remove or mask hinges and knobs, sand, prime bare or glossy spots and apply two coats. Doors can be painted in place or laid flat on stands for the smoothest result. Door edges are painted as well, and doors are left open to dry so they do not stick to the frame. Bifold and closet doors get the same treatment.
C
Crown molding
Crown molding sits where wall and ceiling meet, so a clean line along both edges is what makes it look finished. We caulk the gaps that open along the top and bottom as the house moves through the seasons, fill nail holes and sand, then cut in by hand against both the ceiling and the wall. Painted crown usually matches the rest of the trim, and it is painted before the walls when a room is done top to bottom.
D
Oak-to-white trim conversions
Turning stained oak trim white is one of the most requested interior jobs we do. Oak has open grain and tannins that bleed through white paint as yellow spots, so the trim is cleaned and deglossed, then primed with a bonding, stain-blocking primer. Grain can be filled for a smooth look or left to show through. Two coats of white enamel finish it, and doors, casings, baseboards and stair parts are usually done together so the house reads as one color.
Compare the options
Choosing an enamel for trim
Trim paint has to be hard and level out smooth. These are the common choices.
| Item | Waterborne alkyd | Acrylic enamel | Oil-based enamel |
|---|---|---|---|
| Finish | Levels smooth like oil | Can show brush marks | Levels very smooth |
| Odor and cleanup | Low odor, water cleanup | Low odor, water cleanup | Strong odor, solvent cleanup |
| Yellowing | Very little | None | Yellows away from daylight |
| Best for | Most trim and doors | Closets and budget jobs | Rarely used indoors now |
Around Naperville
Older houses on 4th Avenue, with median build years in the 1910s and 1920s, often have wide casings, tall baseboards and built-up crown that take far longer to prep than modern stock trim. Homes on Loomis Street dating to 1890 to 1900 are known for their original woodwork, and some owners keep it stained while others choose paint. Either way, we count how many old coats are on the trim before quoting, since that decides how much sanding it needs.
How the job runs
How a trim job runs
- Step 1
Walk-through
We count doors, measure trim and agree on sheen and color.
- Step 2
Protect
Floors, carpet edges, hardware and walls beside trim are covered.
- Step 3
Fill and caulk
Nail holes and dents are filled and gaps caulked.
- Step 4
Sand and prime
Glossy finishes are sanded; bare wood and oak get primer.
- Step 5
Two coats
Enamel goes on by brush, sanded lightly between coats.
- Step 6
Rehang and check
Hardware goes back on and doors are checked for sticking.
Trim enamels we use come from Benjamin Moore, Sherwin-Williams and PPG, with Zinsser primers on stained oak.
Benjamin Moore, Sherwin-Williams, JC Licht, Behr, PPG, Valspar, Cabot, Sikkens, Rust-Oleum, Zinsser, Purdy, Wooster
Semi-gloss is easiest to clean; satin hides dents better. Both are common, and we show you samples.
Yes. It gets a stain-blocking primer first so the oak does not bleed yellow through the white.
Either. In place is quicker; off on stands gives the smoothest finish.
It dries in hours but hardens over a couple of weeks, so treat it gently at first.
Yes. When a room is done together, trim is usually painted last so the lines stay crisp.
Often booked together
Other jobs that usually come up alongside this one
Ceiling Painting
Flat ceiling repaints
See the jobFire & Smoke Damage Repainting
Soot and smoke stain sealing
See the jobPre-Sale Home Painting
Neutral repaints before listing
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Moisture-resistant wall painting
See the jobStaircase & Railing Painting
Spindles and balusters
See the jobAnswering now
Book a trim and door painting estimate in Naperville
Call any hour. We count the doors, measure the trim and send a written estimate with the enamel and sheen listed.
