How to Paint a Mold Resistant Bathroom

From This Old House.

Ask This Old House painter Mauro Henrique paints a bathroom using a mold resistant paint.

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Time: 5-6 hours

Cost: $50-$100

Skill Level: Beginner

Tools List for Painting a Mold-Resistant Bathroom:
Paint roller

Shopping List:
Antimicrobial paint
Painters tape
220 grit sandpaper
Roller tray

1. Use painters tape to protect any tile that’s against the surface being painted.
2. Lightly sand the walls with 220 grit sandpaper. Wear a mask while sanding.
3. Suck up the dust from sanding with a vacuum and then wipe the walls down lightly with a damp rag to remove the remaining dust.
4. Pour the antimicrobial paint into a bucket.
5. Use a paintbrush to cut around the edges of the wall with the new paint.
6. Paint the rest of the wall using the roller and the roller tray filled with paint.
7. Allow the first coat to dry and then apply a second coat.

To prevent mildew from forming on bathroom walls, Mauro points out that it’s important to keep the shower vent clean and use it for at least 30 minutes after a shower. If mildew appears, take a bucket of water with a small amount of bleach in it, dip a rag into the bucket, and gently clean the walls to avoid damaging the paint.

Mauro painted the walls with Behr Marquee interior paint in Gray Shimmer with an eggshell finish ( The paint is mildew resistant. Mauro applied two coats to ensure even coverage.

The other materials Mauro used for this job, including the paint brushes, tape, trays, and drop cloths, can all be found at home centers.

Expert assistance with this segment was provided by Mauro’s Painting (

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Keywords: This Old House, How-to, home improvement, DIY, mauro henrique, ask this old house, painting, bathroom, mold-resistant

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