Lena Rivera
Mould is a common problem in homes, particularly in areas with high humidity, such as bathrooms, kitchens, and basements. It can cause allergic reactions and trigger asthma attacks. To prevent mould growth, it is recommended to control moisture levels and improve ventilation. In addition to these measures, using mould-resistant paint is an effective way to stop mould before it starts. These paints contain fungicides and have antimicrobial properties, creating a barrier that prevents mould from spreading. Some recommended mould-resistant paints include Benjamin Moore's Aura Bath and Spa, Rust-Oleum Zinsser PermaWhite Exterior Paint, and KILZ Interior/Exterior Basement and Masonry Waterproofing Paint.
| Characteristics | Values |
|---|---|
| Mold-resistant paint | Benjamin Moore's Aura Bath and Spa, Rust-Oleum Zinsser PermaWhite Exterior Paint, Duramax Exterior Paint & Primer, Zinsser Bulls Eye 1-2-3 Waterbase Primer, Zinsser Guardz, KILZ Interior/Exterior Basement and Masonry Waterproofing Paint, Zinsser Permawhite, Zinsser Mold Killing Primer, Zinsser Mold Blocking Primer spray, Waterborne Ceiling Paint, Kitchen & Bath, Lime Paint, Lime Primer |
| Mold-killing products | Bleach, Borax, Concrobium fungicide spray, White distilled vinegar and hydrogen peroxide, Mold-killing chemicals, Sugar soap |
| Mold-resistant paint characteristics | Durable, low VOC levels, meets specific needs (e.g. outdoors vs. indoors), self-priming, oil-based or water-based formulas, contains fungicide agents |
| Mold-resistant paint use cases | Areas with high humidity, such as bathrooms, kitchens, basements, and exteriors in moist climates |
| Mold prevention methods | Use fans in bathrooms, leave windows open, use exhaust fans when cooking, run dehumidifiers, add insulation to windows, pipes, and walls, maintain gutters and downspouts |
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What You'll Learn
Lime-based paint and primer
Lime Prime can be used in combination with a top coat such as Lime Seal, which provides a tough, scrubbable, and waterproof surface. Lime Seal can be tinted to pastel and mid-tone colours and can be used as a house paint, both inside and out.
In addition to lime-based products, there are other paints and primers that can help prevent and kill mould. These include Zinsser PermaWhite Exterior Paint, Duramax Exterior Paint & Primer, Benjamin Moore Aura Bath and Spa Paint, and Killz Interior/Exterior Basement and Masonry Waterproofing Paint. It is also recommended to control moisture and improve ventilation to prevent mould growth.
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Anti-mold compounds in paint
Anti-Mould Compounds in Paint
Mould is a type of fungus that can grow anywhere in a home where there is sufficient moisture and a food source, such as drywall paper, insulation, carpet or sub-flooring. It can cause allergic reactions and trigger asthma attacks. To prevent mould, it is important to control moisture by improving ventilation and using dehumidifiers. However, mould-resistant paints can also be used to prevent mould growth and seal off access to wall-based materials.
Mould-resistant paints contain fungicide agents that make it more complicated or impossible for moisture-seeking mould to grow and spread. They are typically used in areas with high humidity, such as bathrooms, kitchens, basements, and exteriors in moist climates. These paints are often self-priming, but can also be applied after a fungicidal primer layer for extra protection.
Some recommended mould-resistant paints include Benjamin Moore’s Aura Bath and Spa, which is a water-based paint with a matte finish, and Rust-Oleum Zinsser PermaWhite Exterior Paint, which requires no sanding and resists dirt and moisture. For a kitchen or bathroom, an acrylic latex paint with a Satin finish and antimicrobial additives can be a good option.
In addition to these specialised paints, some sources suggest that a high-gloss paint may be more resistant to mould, as it provides a smoother surface for the mould to grip. However, it is important to note that oil-based paints and primers can actually attract mould. Therefore, it is recommended to use a water-based or latex paint to reduce the risk of mould growth.
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Using bleach or borax
While there are paints that prevent mould, you may want to consider using bleach or borax to kill mould before painting.
Bleach is a common household cleaner and can be used to kill mould. However, it does have drawbacks. Bleach can irritate the skin and eyes and can be dangerous if mixed with other cleaning products such as ammonia or vinegar. Bleach does not kill mould spores, and they can migrate and continue to grow. It also does not prevent mould from returning.
Borax is a natural mould killer that is less hazardous than bleach. It has very low toxicity but can still be toxic, so it should not be left in places where it can be touched. Borax can be mixed with water and sprayed onto mould. It will leave a residue that will continue to kill mould and prevent it from returning.
Before using any mould-killing products, it is important to identify and fix the source of excess moisture to prevent mould from growing. This may involve finding and repairing a water leak or lowering the humidity in your house.
Once the mould has been killed and the source of moisture has been addressed, you can then paint the area. It is recommended to use a mould-resistant paint to prevent mould from returning.
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Mold-resistant paint for basements
Keeping your basement mould-free is essential for your health and the structural integrity of your home. To prevent mould, you must control moisture, as mould is a fungus that thrives in moist, warm environments.
Before painting, ensure you have eliminated the source of moisture and cleaned the area. You can do this by using a sugar soap to thoroughly clean the surface, then obtaining a mould-killing chemical. Once the area is clean, sand it down and apply a stain-blocking primer/undercoat.
When choosing a paint, opt for one with antimicrobial properties to help keep mould under control. Here are some mould-resistant paint options suitable for basements:
- Zinsser PermaWhite Exterior Paint: This paint requires no sanding and resists dirt and moisture. It can be cleaned with soap and water. It has excellent coverage and can be used as a primer.
- Duramax Exterior Paint & Primer: This paint provides protection against mould-causing wet weather. It comes in a tint base that can be custom-mixed from a wide range of colours.
- Benjamin Moore Aura Bath and Spa Paint: This paint is ideal for high-humidity interior areas like basements with frequent steam, such as from showers. It offers high coverage, a wide colour selection, low odour, and zero VOCs.
- Waterborne Ceiling Paint: This paint is perfect for ceilings with a history of mould growth. It comes in over 3,500 colours and has excellent coverage of 400–450 sq. ft. It is also environmentally friendly with zero VOCs.
- Kitchen & Bath: This acrylic latex paint with a Satin finish resists mildew growth due to its antimicrobial additives.
- Element Guard: This acrylic resin paint is specially formulated to fight exterior moisture and wind-driven rain. It can be applied in temperatures ranging from 35°F to 100°F and quickly develops resistance to rain. It offers Flat, Low-Lustre, and Soft-Gloss finishes.
In addition to using mould-resistant paint, you can also install fans, leave windows open, use exhaust fans when cooking, and run dehumidifiers to reduce indoor humidity and prevent mould growth.
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Antimicrobial additives in paint
Antimicrobial paint additives are an advanced controlled release antimicrobial treatment for coatings and paints. They can be introduced into a paint, coating, ink, or lacquer during manufacturing to make it resistant to bacteria and microbes. They can be formulated to suit the type of paint or coating, the material it may be used to treat, and the manufacturing process employed.
Antimicrobial paint additives have the ability to resist unsightly mould and mildew growth. This makes them a perfect addition to paints that are marketed for use in moist or humid environments, such as bathrooms. They are also suitable for use on an array of different surfaces, including walls, floors, doors, furniture, lighting, handles, and switches.
These additives can be manufactured directly into paints, coatings, inks, and lacquers. Once the antimicrobial additive has been added to the paint or coating, it can be sent for analysis at an independent, certified laboratory where a team of experienced microbiologists will measure the antimicrobial performance.
Antimicrobial paint additives have been proven to prolong the shelf life of paint products. Their efficacy against bacteria and mould helps to minimise the risk of premature product degradation, ensuring paints remain usable for longer.
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Frequently asked questions
Some of the best anti-mold paints include Benjamin Moore's Aura Bath and Spa, Rust-Oleum Zinsser PermaWhite Exterior Paint, and Duramax Exterior Paint & Primer. Benjamin Moore's Aura Bath and Spa is a water-based paint with a matte finish that is durable and mildew-resistant. Zinsser PermaWhite Exterior Paint is easy to clean and provides protection against mildew and moss. Duramax Exterior Paint & Primer can be custom mixed from a wide range of colours and also protects your home from damaging UV rays.
Anti-mold paints contain fungicide agents that make it more complicated or impossible for moisture-seeking mold and mildew to grow and spread. They work by sealing off access to wall-based materials and therefore preventing mold from spreading to floors and carpets.
First, kill the mold spores with a mold-killing chemical. Then, sand down the area and apply a stain-blocking primer/undercoat such as Zinsser Mold Killing Primer. Finally, apply a couple of top coats of your normal paint. Alternatively, you can use a two-step process by applying a fungicidal primer layer and then a top coat of antimicrobial paint.
