🖌️ Bathroom Paint Calculator

Best Paint for Bathrooms

Bathrooms are high-moisture environments, so choosing the right paint finish and formulation is critical for a long-lasting result.

Finish Matters

• Satin or semi-gloss finish is essential — these sheens resist moisture, mildew, and are easy to wipe clean. Satin offers a soft luster; semi-gloss is more reflective and slightly more durable in wet areas.
• Avoid flat/matte finishes in bathrooms — they absorb moisture and are prone to mildew growth and staining.

Bathroom-Specific Formulations

• Look for "bathroom paint" or "kitchen & bath" labels — these formulations contain mildewcide additives that actively resist mold and mildew growth.
• Use primer on bare drywall or when making a dramatic color change (dark to light). A moisture-blocking primer adds an extra layer of protection.

Ceiling Paint

• Use bathroom ceiling paint with anti-mildew properties — bathroom ceilings are exposed to rising steam and are a common spot for mold.
• Flat finish is acceptable for the ceiling as long as you use a mildew-resistant formulation.

Bathroom Painting Tips

• Run the exhaust fan while painting and for 24 hours after — proper ventilation speeds drying and prevents moisture from getting trapped under the fresh paint.
• Don't paint over mold — treat any visible mold with a bleach solution (1 part bleach to 3 parts water) and let it dry completely before priming and painting.
• Remove towel bars, mirrors, and light fixtures before you start. It's faster and produces cleaner results than trying to tape around them.
• Use painter's tape on tile edges, fixtures, and the ceiling line — bathrooms have more surfaces to mask than a typical room. Press the tape edges firmly to prevent bleed-through.
• Paint the ceiling first, then the walls — this way, any ceiling drips can be rolled over when you do the walls.
• Allow extra drying time — bathroom humidity slows paint curing. Wait at least 4 hours between coats (or longer in humid conditions).

Bathroom Paint Cost

Bathroom-specific paint costs a bit more than standard wall paint due to mildewcide additives and moisture-resistant formulations.

Cost Per Gallon

• Premium bathroom paint: $30–50 per gallon (brands like Behr Ultra, Benjamin Moore Aura Bath & Spa, Sherwin-Williams Emerald)
• Mid-range bathroom paint: $25–35 per gallon

Typical Project Costs

• Average small bathroom (8x5): ~1 gallon for walls + ceiling = $30–50
• Average master bath (10x8): ~1.5–2 gallons = $45–100
• Half bath / powder room (5x4): ~1 quart to 1 gallon = $15–50

Budget Tip

You can use regular satin or semi-gloss paint instead of specialty bathroom paint if your bathroom has good ventilation (a functioning exhaust fan). The key is the sheen — satin and semi-gloss inherently resist moisture better than flat finishes.

Frequently Asked Questions

What sheen should I use in a bathroom?

Satin is the minimum recommended sheen for bathroom walls. It resists moisture and is easy to clean. For areas directly around the shower or tub, semi-gloss is even better — it provides the highest moisture resistance of any common wall finish. Avoid flat and matte finishes in bathrooms.

Do I need special bathroom paint?

Mildew-resistant bathroom paint is recommended, especially for bathrooms with poor ventilation or no exhaust fan. These paints contain mildewcide additives that prevent mold growth. However, a good-quality satin or semi-gloss paint will perform well in bathrooms with proper ventilation and an exhaust fan.

How much paint for a small bathroom?

A standard small bathroom (8x5 feet, 8-foot ceilings) has about 208 sq ft of wall area plus a 40 sq ft ceiling. After subtracting a door, window, and tub surround, you need roughly 1 gallon of paint for 2 coats. If you're only painting the walls (not the ceiling), a single gallon is more than enough.

Can I paint over bathroom tile?

Yes, with proper preparation. Sand the tile lightly with 220-grit sandpaper to create grip, clean thoroughly, then apply a bonding primer designed for glossy surfaces. Finish with 2 coats of semi-gloss paint. This works best on wall tile that doesn't get direct water contact — don't paint tile inside the shower or on the floor.

Do I need mold-resistant paint in a bathroom?

It helps in a bathroom with poor ventilation, but it is not a substitute for an extractor fan. Mildew grows on the soap film and moisture sitting on the paint, not on the paint itself, so ventilation and cleaning matter more than the additive.

How long should I wait before showering in a freshly painted bathroom?

At least 24 hours, and 48–72 is safer. Latex paint is touch-dry in hours but takes days to fully cure, and steam on uncured paint causes blistering and poor adhesion that shows up weeks later.

Can I paint over bathroom wallpaper?

It's not recommended — bathroom humidity gets behind the paper and lifts it, taking the paint with it. Strip the wallpaper, wash off the adhesive residue, prime, and then paint.

What paint should I use on a bathroom ceiling?

A satin or semi-gloss, not flat. Bathroom ceilings take the most moisture in the room, and flat paint holds it. Many manufacturers make a specific bathroom ceiling paint with added mildewcide.

Should I paint the bathroom trim a different sheen?

Semi-gloss on trim and doors, satin on walls is the usual pairing. The sheen difference defines the trim line crisply and gives the surfaces most likely to be splashed or scrubbed the more washable finish.

How do I prep a bathroom wall before painting?

Wash it — bathrooms accumulate an invisible film of soap, hairspray, and body oils that paint will not stick to. Use a degreasing cleaner or TSP substitute, rinse, let it dry fully, then sand any glossy areas and spot-prime patches.