A small room with outsized prep
A bathroom is one of the smallest rooms in a house and one of the slowest to paint well. Walls are broken up by a vanity, a toilet, a mirror, a tub surround and towel bars, so most of the work is cutting in rather than rolling. Add mildew on the ceiling and the job becomes mostly cleaning and preparation.
This guide prices that job by its parts, not by dollar figures, so you can see where a Salem painter's hours go.
Spots or a bigger problem
The first question is how much growth there is and what it's growing on. The Oregon Health Authority notes that absorbent materials such as moldy ceiling tiles and sheet rock may need to be replaced, and that the U.S. EPA recommends experienced professionals clean mold problems larger than 10 square feet.
For a painting proposal, that splits the job in two:
- Surface mildew on a sound, painted ceiling. The usual approach is to clean it, rinse, let it dry fully and seal with a primer before repainting. This is ordinary prep for a painter.
- Growth on soft, stained or crumbling drywall, or a patch larger than the EPA threshold above. That's no longer a paint problem. The damaged material may need to come out, and cleanup on that scale is work the EPA recommends for experienced professionals. Painting comes after.
If you're not sure which you have, ask the painter to look before quoting, and be wary of any plan to paint over soft or discolored board.
Why the ceiling keeps growing spots
Paint can't outlast the conditions that caused the mildew. To control mold, the Oregon Health Authority advises keeping indoor humidity at 30 to 60 percent. A bathroom spikes far above that every time someone showers.
Outdoor air adds to it. In an average year at Salem/McNary, NOAA counts about 3 hours with the wet-bulb temperature above 73°F and about 111 hours above 67°F. Those are the hours when opening a window brings in the least drying air.
So part of the cost conversation is about the fan:
- Does the bathroom have an exhaust fan that vents outdoors, not into the attic?
- Is it strong enough for the room, and does it run long enough after a shower?
- Is the grille clogged, or the duct crushed?
A painter can tell you if the fan looks undersized or dead, but replacing or rerouting it is electrical or carpentry work, usually by someone else. Get it done before the new paint goes on.
The line items
Cleaning and drying. Mildew cleaner, scrubbing, rinsing and drying time. Drying matters most; primer over damp drywall fails.
Removing fixtures. Taking down the mirror, light covers, towel bars and outlet plates makes for a cleaner job and adds time.
Repairs. Peeling paint near the shower, nail pops, cracked tape seams and soft corners need scraping, patching and sanding. See our surface preparation guide.
Primer. A stain-blocking primer over cleaned mildew stains and patches keeps shadows from bleeding through.
Bath paint. Products sold for bathrooms resist moisture and include mildewcides. Satin or semi-gloss sheens shed water and clean easily; our sheen guide explains the trade-offs.
Caulk. Fresh, mildew-resistant caulk where the tub or shower meets the wall, and at trim, often comes with the job.
Drying time and access
A bathroom is often the only one in the house, or one of two. Between cleaning, drying, priming and two coats, the room may be out of use for longer than you'd expect, and fresh bath paint needs time before steam hits it. Ask how many days the room will be closed and when you can shower again.
Comparing proposals
Compare which surfaces are included (ceiling, walls, door, trim), the cleaning method, the primer, the paint and the plan for drying. For interior work in general, see interior painting, and for how a total is built, read our pricing guide.