Does KILZ Kill Mold?

KILZ is an effective way to avoid further growing mold on fresh and clean surfaces. However, it cannot be solely used as a treatment or killer for existing spores – any company that claims this ability will mislead you with its lies!

If you’re wondering if KILZ can kill mold, the answer is yes! KILZ is a powerful primer that works to kill and prevent the growth of most types of mold. It does this by sealing out moisture and preventing its spread. So, if you’re looking for a way to kill off pesky mold in your home.

What is KILZ?

KILZ manufactures paint primers to prevent black mold, mildew, stains, and odors in your home.

In addition, KILZ can help you reach hard-to-reach spots. It’s used to kill and prevent the growth of mold.

It is effective on new and clean surfaces but will not work on existing spores.

KILZ water-based primer products help prevent mold on high-rise buildings and contribute to a Safer and Healthier Living Environment.

If you live in an area with high humidity or a lot of moisture, it’s more likely that your building will get mold. To stop mold and mildew growth, use a strong primer to prevent it.

Can KILZ kill Mildew?

If you believe that KILZ can eliminate mold, you’re sadly mistaken. Hydrogen peroxide and vinegar must be used to cleanse an area of mold before painting over it with KILZ.

Not only will painting over mold not kill it, but it can also be dangerous to your health and damage your property.

Mold is a serious problem, while mildew isn’t as dangerous. This has to do with the type of chemical used for removing it-KILZ acts more like a primer than anything else because it doesn’t contain any harsh chemicals that would kill mold on different surfaces but just prime them instead!

Not only is Mold more difficult to remove, but it also grows behind walls where you can’t see it. Mildew, on the other hand, only affects surface areas.

KILZ will not eliminate an existing mildew problem, but it can stop future growth.

Does KILZ kill Mold on Drywall?

Water-based KILZ PVA Drywall Primer was created specifically for drywall and is perfect because it dries quickly.

Not only does KILZ help give a smooth finish to drywall, but it also works fantastically with oil-based primers. In addition, it is exceptional at covering dark patches of mold and mildew.

You can clean mold or mildew on drywall using chemicals such as borax or vinegar/baking soda.

Although it may seem like the right solution, painting over mold or applying KILZ primer will not completely solve the problem.

Although this will halt any mold growth on the surface, we cannot guarantee that it is the best solution to prevent future mold growth. There is a chance that mold might grow under the paint and cause cracking in the drywall, which would only worsen the problem.

Before you use KILZ primer, it is recommended that you eliminate the visible Mold or Mildew on the drywall.

If you live somewhere with high humidity or moisture, you need to remove the mold using DIY techniques. After removing the mold, you can use the KILZ primer and paint to finish the work. 

If you want to kill the Mold or Mildew growing on your drywall, it is best to use bleach or borax. However, be careful not to overuse either chemical as they can damage your drywall from the inside if their PH levels are too high.

Which KILZ product helps in Killing Mildew and Mold

The versatility of this product makes it one of the best primers you can use. After your walls have been treated and mold removed, simply apply KILZ to prevent future growth or cover up any unsightly developments with a fresh coat!

The KILZ products are safe for use around people and will not emit unpleasant odors during your painting session. Plus, they don’t harm health or cause any damage to property, unlike other paints that might contain toxins that can be hazardous if inhaled!

Can KILZ kill Black Mold?

Get that KILZ is not an anti-mold paint. But it’ll stop any new growth from happening! It’s best used in areas with high humidity, like your bathroom or kitchen, if you don’t want to deal with more mold on top of what already exists there.

Once you remove the mold, you need to make sure that the stains are covered.

To reduce the growth of mold, you can add another layer of primer.

You can use mold-resistant latex paints over the primer for more beneficial results.

You will need to use proper mold-killing products in addition to these techniques to get rid of mold.

Zinsser Vs KILZ Primer

Zinsser primer is a white primer that is used for painting. It is made from different materials, and there are various types of Zinsser primer.

In addition, Zinsser’s 1-2-3 Bullseye You don’t have to sand before using primer but sanding a bit will provide the best grip on any high-gloss surfaces.

The Zinsser paint primer is much better suited for various painting tasks due to its thick and reliable priming layer.

KILZ primer has a faint, reasonable smell compared to Zinsser. KILZ isn’t as thick, making it much easier to apply and work with.

This product is thicker, so you won’t need to apply as many coats. Some efforts will only require one Zinsser layer. In terms of consistency, Zinsser is a superior product. It also doesn’t bleed through.

Because KILZ primer is water-based, the paint job it does usually isn’t very thick.

KILZ primer is a top pick for indoor use because it doesn’t release many fumes and can be spread smoothly over drywall or other materials.

Mold Killing Primer for Wood

KILZ primers provide excellent coverage for surfaces both inside and outside the home. They can effectively seal the surface and prevent any further damage.

Treated wood products are perfect for outdoor use, as they are resistant to moisture and weathering.

Kill mold without using toxic chemicals.

Did you know that there are gentle, eco-friendly ways to banish mold using only household items? These natural solutions won’t hurt your family or the environment, and they’re just as effective (if not more so) than harsh chemicals like bleach or borax.

1- Vinegar

Vinegar is a good solution for killing mold. After spraying the vinegar on the mold, wait a few hours, then scrub the mold with a brush.

Add a few drops of essential oil if the vinegar smell bothers you. The strong smell will go away in a few hours.

2- Baking Soda

Mix baking soda in water or use a water-vinegar solution, then spray over the surface. Because vinegar and baking soda kill different types of mold, they are often used together to treat mold problems.

Let the baking soda sit for a few minutes before cleaning it with a wet towel. Wipe it down. Baking soda is a natural disinfectant that is gentle and will not leave a bad smell.

3- Hydrogen Peroxide

Hydrogen peroxide is a good alternative to bleach for getting rid of mold. It is not poisonous, and it does not hurt the environment. You can mix hydrogen peroxide and vinegar in a container and keep them in a dark spot.

Hydrogen peroxide works well on mold on clothes, flooring, bathroom fixtures, walls, and kitchen appliances.

To use it, spray a 3 percent hydrogen peroxide bottle on the mold surface and let it sit for 10 to 15 minutes. After that, the mold will come off easily. Then, clean and wipe away any leftover mold spores with a moist cloth.

Tips Before Buying Mold

  1. Get more paint and primer than you think you’ll need to ensure you don’t run out in the middle of painting over the mold.
  2. Invest in high-quality paint and primer like those offered by KILZ, especially when dealing with challenging surfaces.
  3. Prepare all your tools before starting the project, including brushes, rollers, painter’s tape, drop cloth to protect your floors, and a face mask. Proper clothing is also essential to ensure your safety while painting over the mold.

Best Products to Kill Mold

Kilz Premium Primer

  • Water-based formula with stain-blocking properties
  • Suitable for use in humid areas
  • Seals porous surfaces effectively
  • Helps prevent the growth of mold and mildew
  • Ideal for color changes on various surfaces

KILZ Premium is a water-based formula that effectively seals surfaces and conceals stains. Its stain-blocking properties make it a great choice for areas with high humidity, such as bathrooms and laundry rooms. This product provides exceptional adhesion to most interior and exterior surfaces while hiding previous colors and imperfections. Its consistency allows for a smooth and even finish that seals porous surfaces and fills in small imperfections. Moreover, KILZ Premium offers mildewcide protection to prevent mold and mildew growth. This product is suitable for use on a variety of surfaces, including drywall, plaster, woodwork, paneling, masonry, and brick. It is particularly useful for sealing light to medium color changes.

2. Best Mold Paint

Zinsser 276087 Mold Killing Primer

3. Liquid Mold Killer


encountering surfaces affected by mold is a common occurrence when undertaking home improvement projects. While there have been many products claiming to treat or conceal mold, not all have proven reliable.

For half a century, KILZ has been a trusted brand, offering a reliable line of products to address mold problems. Whether you’re a DIY homeowner or a professional contractor, KILZ products are a quality solution to combat mold.