Our readers keep the lights on and my morning glass full of iced black tea. As an Amazon Associate, I earn from qualifying purchases.7 Best Anti Mould Paint | Bathroom Mold Proof Paint

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The 5-gallon Perma-White is the undisputed volume leader for homeowners tackling multiple rooms or a large basement. Its satin finish offers a good balance between moisture resistance and a soft aesthetic, and the self-priming formula eliminates the need for a separate primer coat—even on glossy surfaces. The acrylic resin carries a lifetime durability guarantee, reflecting Zinsser’s confidence in its film integrity.

Coverage is rated at 2000 square feet per pail, which makes it cost-effective for whole-house applications. The paint is washable and stain-resistant, so high-traffic areas like kitchen ceilings remain clean without degrading the mold-proof layer. Users report that it bonds well to previously painted drywall and cured plaster without sanding.

One professional painter noted the paint can be thin and runny, requiring extra coats to cover dark underlying colors. For best results, stir thoroughly and apply two to three coats over a primed surface if the existing wall is a dark shade. The satin sheen is less reflective than semi-gloss, which works well for ceilings but may be harder to clean than a glossier alternative.

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This is the exterior sibling of the Perma-White family, formulated to withstand UV exposure, rain, and temperature swings while keeping mold and mildew off wood siding, fences, and outdoor trim. The semi-gloss finish sheds water and dirt effectively, and the built-in fungicide is UV-stabilized to remain active for years under direct sunlight. It also contains a primer, bonding well to bare wood and previously painted surfaces.

Coverage is listed for two coats, and users consistently praise the smooth application and clean white finish. One painter used it on a bathroom ceiling indoor and outdoors, noting that the semi-gloss made cleaning easy. The dry time is just two hours to touch, allowing for rapid recoating on large exterior projects.

A few customers in high-humidity climates reported mold returning after about a year, which suggests that while the paint film resists growth, it is not a permanent cure for underlying moisture issues. Exterior surfaces must be cleaned of existing mold before application, and the paint will only protect the coating itself, not the substrate beneath if moisture seeps through cracks.

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This two-pack of Perma-White semi-gloss is specifically designed for moisture-prone interior spaces like bathrooms and kitchens. The semi-gloss finish is harder and less porous than satin, meaning it withstands steam, condensation, and frequent wiping without degrading. Users consistently report zero mold or mildew regrowth for three years or more after applying a primer and two coats to their bathroom ceiling.

Each gallon covers approximately 400 square feet, and the two-pack gives you enough for a full bathroom plus a small powder room. The paint requires thorough stirring—it contains heavy fungicidal solids that settle—but once mixed, it levels nicely and leaves a professional-looking sheen. It is also rated for outdoor use, so leftover paint works for window trim or doors.

One long-term reviewer tracked the ceiling from 2017 to 2020 and found no spores despite daily hot showers and a marginal exhaust fan. However, the price has risen significantly over recent years, and shipping damage can occur if cans are not securely packaged. The paint is self-priming, but using a dedicated stain-blocking primer over existing mold stains yields the best long-term result.

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Ames Blue Max is not a paint in the traditional sense—it is a liquid rubber elastomeric coating that forms a seamless waterproof membrane. Its 900% elongation means it can stretch across foundation cracks up to 1/8 inch without splitting, making it ideal for below-grade concrete walls and basement slabs. The white liquid rubber bonds to concrete, wood, metal, and even existing paint, creating a durable barrier that blocks moisture vapor.

The product is non-toxic and VOC-compliant nationwide, so it is safe for interior use in basements and crawl spaces. Users praise its performance on shower window sills and bird baths, noting that two coats with adequate cure time (at least one week in warm weather) produce a completely watertight seal. It can be brushed, rolled, or sprayed onto vertical and horizontal surfaces.

The coating has a slimy uncured texture and requires patience—full cure takes days, not hours. If used outdoors in direct sunlight, it must be top-coated with an acrylic paint, as UV exposure degrades the rubber over time. Plan for at least 24 hours between coats, and do not apply if rain is expected within 48 hours.

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WaterTite-LX bridges the gap between a mold-proof paint and a true waterproof coating. It resists up to 20 pounds per square inch of water pressure, which qualifies it for basement walls and foundation interiors where occasional hydrostatic pressure is a concern. The latex base produces a smooth, non-gritty matte finish that applies easily by brush or roller with ultra-low odor.

Zinsser backs this paint with two separate guarantees: a 15-year waterproof warranty and a 10-year mold and mildew-proof warranty on the paint film. That dual guarantee is rare in this price category and signals the product’s reliability for moderate moisture conditions. Users report excellent results on bathroom ceilings and even vintage concrete fountains, noting fast drying and easy soap-and-water cleanup.

Some users complain that the paint odor lingers for weeks after application, and a few professional painters prefer Sherwin-Williams Loxon for high-pressure below-grade work. The coverage is limited to 100 square feet per gallon, so larger basements will require multiple gallons. It is only available in white, so tinting is not an option if you need a colored finish.

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Paint-Guard is a liquid concentrate you stir into any standard interior paint, transforming it into a mold-resistant coating. A single 15-ounce bottle treats up to 5 gallons of paint, making it an economical way to upgrade leftover paint or to use a specific color that pre-formulated anti-mold paints do not offer. Users report that it mixes in without altering the paint’s color, thickness, or finish sheen.

Several reviewers used it in bathrooms and basements after bleach-treating moldy areas, and they documented zero regrowth weeks and months later. One contractor recommended it for basement paneling, noting the additive provides low-cost moisture protection on surfaces where full waterproofing paint is overkill. It works with water-based paints, including matte, eggshell, and satin finishes.

Because it is an additive rather than a factory-integrated fungicide, the concentration of active ingredient is limited by the paint’s own volume. For heavy-duty mold environments, a dedicated paint like Perma-White may offer longer-lasting protection. The product is specifically for interior use and should not be mixed into exterior or elastomeric coatings unless confirmed by the manufacturer.

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Jomax is not a paint but a bleach-free mold and mildew stain remover that you apply before painting. The concentrate makes up to 5 gallons of cleaning solution and covers up to 1,500 square feet with a standard pump-up garden sprayer. It works by using natural weather conditions—sunlight and rain—to break down organic stains over one to two days.

Users have relied on Jomax for decades to prep manufactured home siding, decks, patios, and even shower grout before repainting. The solution does not require scrubbing or rinsing, which saves significant labor on large exterior surfaces. It is safe for most substrates including vinyl, wood, and concrete, and it will not bleach clothing or kill plants if you wet them beforehand.

For interior use on bathroom grout, spot-test before full application to avoid damaging the surface. The formula has a slight chemical smell, and eye and skin protection are mandatory. Some users found that heavy residue still required light scrubbing, especially on heavily textured siding. For best results, apply when no rain is forecast for 24 hours and avoid spraying on windy days.