What happens if you paint over mold with Kilz?

Author: Mr. Torrey Hill Jr.  |  Last update: Monday, June 2, 2025

If the moldy surface is not properly cleaned before priming with KILZ® Mold & Mildew, it will likely continue to grow underneath the paint and eventually come back out through paint that cracks or peels or through the back of the wall or surface, especially if it remains damp or wet.

Can I paint over mold with Kilz?

=> Mold or Mildew Covered Surfaces: KILZ MAX Clear should not be applied to a surface containing mold or mildew; it should not be used to cover up mold or mildew. Wash the area with a mildew remover, rinse with water and allow to completely dry before coating.

What happens if you just paint over mold?

In short: If you paint over active mold, you not only just spread mold around your house, but also make it impossible for you to see how much mold is growing in the original spot! So if you have active mold, painting over it is not a good idea.

Can you paint over mold killing primer?

Do's and Don'ts of Painting Over Zinsser Mold Killing Primer

Firstly, ensure that the primer is completely dry before applying any paint. This will ensure proper adhesion and a smooth finish. Additionally, choose a high-quality paint that is compatible with the primer to guarantee long-lasting results.

Can kilz be painted over?

Dries to the touch in 30 minutes. Can be recoated or topcoated in one hour with latex or oil-based paint.

Can you paint over mold?

Will painting over kilz stop the smell?

KILZ RESTORATION Primer also seals persistent pet, food and smoke odors. Use on interior surfaces including drywall, woodwork, plaster, masonry, brick, painted metal, ceramic tile, glass and most other glossy surfaces. Topcoat with water-based or oil-based paint.

How do you treat mold before painting?

Start by washing the surface with a solution of one part liquid bleach and three parts water. Apply the solution and scrub the mildewed area. Allow the solution to remain on the surface for 10 minutes. Rinse thoroughly with water and allow the surface to dry before painting.

How long does kilz mold primer take to dry?

Dries to the touch in 30 minutes at 77°F (25°C) and 50% humidity. Recoat or topcoat after 1 hour.

How to tell if someone painted over mold?

Uneven Surface Texture

Depending on the type of walls you have, you may notice that the texture is strangely uneven or even bumpy in some areas. This is a tell-tale sign that mold has been painted over. When you run your hand over the area, it will be rough to the touch and is inconsistent with the rest of the wall.

How to get rid of mold on walls permanently?

How to Clean Mould on Walls in Three Steps
  1. Mix one part bleach to four parts water.
  2. Wipe and gently scrub the mould until it is gone.
  3. Finish by wiping away the bleach mixture and dry the area well with a soft cloth.

Can mold grow under paint?

While painting over mould may temporarily disguise the problem, paint alone will not kill mould. Instead, the mould will continue to grow underneath the paint until it begins to show through. It may also cause the paint to bubble or flake, ruining the finish. If possible, it's best to remove the mould before painting.

Does painting over mold make it safe?

Not exactly. Painting over mold is just putting a Band-Aid over a much larger, potentially hazardous problem. You must find the source of the mold growth and eliminate it in order to stop mold from growing in your home or office.

What laundry detergent kills mold?

Remedy by CitriSafe Hypoallergenic Laundry Detergent fights mold in clothing and bedding! CitriSafe is especially helpful for washing clothes worn during a mold clean-up job, but can be used for all your laundry needs.

How many coats of mold killing primer?

Customers say the Zinsser Mold Killing Primer is effective in covering and preventing mold, with many noting its ease of application and quick drying time. Users appreciate its low odor and good coverage, often achieving satisfactory results with just one coat.

Does painting over mold with kilz work?

If the moldy surface is not properly cleaned before priming with KILZ® Mold & Mildew, it will likely continue to grow underneath the paint and eventually come back out through paint that cracks or peels or through the back of the wall or surface, especially if it remains damp or wet.

How many coats of kilz primer is needed?

Depending on how strong or bold the previous color is, it may be necessary to apply more than one coat of primer. However, it is not necessary to over apply the primer with so many coats. As long as the primer applies uniformly over the previous color, then one or two coats should be sufficient.

What is the best solution to clean mold?

Chemical or Natural Mold Cleaners
  • Use undiluted white vinegar on hard surfaces in kitchens and baths. Apply it directly to the mold.
  • Make a bleach solution to kill mold. Mix one cup of bleach in a gallon of water. ...
  • Mix a 50/50 solution of ammonia and water. Spray on the surface.

Does Kilz seal mold?

With its sealing properties and mildewcide protection, Kilz primer provides a durable barrier against mold and mildew growth, ensuring a cleaner and healthier living environment for you and your family.

What are symptoms of black mold exposure?

The most common symptoms of black mold exposure include:
  • Sneezing.
  • Coughing.
  • Nasal congestion.
  • Postnasal drip.
  • Red eyes.

What's the best paint to cover mold?

No paint will stop mould but there are some trade paints with active ingredients that inhibit and resist mould growth. Zinsser Mould Resistant Paint is perfect for high-humidity areas of the home including kitchens and bathrooms, as is Crown Trade Clean Extreme Mould Inhibiting Scrubbable Matt.

Are the fumes from KILZ toxic?

Repeated or prolonged inhalation may cause toxic effects. Signs/Symptoms: Overexposure can cause headaches, dizziness, nausea, and vomiting.

Which is better, KILZ or Zinsser?

Original Kilz Primer allowed more seep through when put in two coats to two different walls in the same area, whereas Zinsser provided superior coverage.

Will KILZ get rid of urine smell?

KILZ is a great solution for medium to severe odors, including those from pets. PLEASE NOTE: We use Kilz to seal your floor and prevent odors on the FLOOR.

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