Although it is designed to be applied directly to mold and mildew prone surfaces, any existing mold and/or mildew on the surface should be removed before priming and painting. This will ensure best results. Wash the area with a mildew remover, rinse with water and allow to dry before priming.
I often hear people say you can paint over mold or mildew with kilz. This is a big NO NO !! You should never paint over any mold or mildew no matter what brand of paint you are using. You always need to remove (and kill) the mildew first.
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.
Zinsser Mold Killing Primer is a water-based EPA registered fungicidal protective coating that can be used to paint over and kill all existing mold, mildew, moss, fungi, odor causing bacteria and any other fungal organisms.
To remove mold before painting a wall, start by cleaning the affected area with a solution of water and bleach (1:1 ratio). Scrub the surface thoroughly and allow it to dry completely. Afterward, use a mold-resistant primer to prevent further growth before applying paint.
Remove all visible mould before painting using a suitable cleaning solution such as Zinsser Mould Killer.
KILZ® MOLD & MILDEW† Primer is a water based primer-sealer-stainblocker that is specially designed for residential surfaces in high humidity, moisture and temperature environments such as kitchens, bathrooms, powder rooms and laundry rooms.
Mold or Mildew Covered Surfaces: Any existing mold and/or mildew on the surface MUST be removed before priming or painting.
KILZ Concrete & Masonry Bonding Primer is specially formulated to optimize the adhesion of masonry coatings. With proper application, this product provides a sound foundation for coatings with excellent resistance to water, alkali and efflorescence.
Mix one part bleach with three parts water and use a brush or sponge to scrub the area thoroughly. Be sure to wear protective gloves and ensure proper ventilation during this process.
While mold killing primers can be effective at preventing the growth of mold in a moist area, your best bet is to get rid of the mold by cutting out affected areas in a completely contained location.
Here's how to get rid of mold outside the house: Liberally spray a 1-to-10 solution of bleach and water on the affected surface. Let sit for 10 to 20 minutes. Scrub any tough stains with a stiff bristle brush dipped in the bleach solution.
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.
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.
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.
Kilz and Zinsser make primers that claim to kill mold, but you need to remove the mold before using either of these products.
Indoor mold growth can and should be prevented or controlled by controlling moisture indoors. If there is mold growth in your home, you must clean up the mold and fix the water problem. If you clean up the mold, but don't fix the water problem, then, most likely, the mold problem will come back.
Zinsser Mold Killing Primer is an EPA registered, water-based fungicidal protective coating that kills existing mold, mildew, moss, fungi, and odor-causing bacteria. It works effectively under any type of coating and is ideal for use with ZINSSER Perma-White.
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.
Don't Paint Over Mold
Household paint has a lot of benefits, but killing mold isn't one of them. Covering up mold isn't the way to go when considering DIY mold removal. Mold can't be painted over in hopes it goes away.
Using vinegar could not be simpler. All you need to do is spray it directly on to the affected area, or alternatively, spray the vinegar on to a rag and then apply it on the mould this way. Wait for around 15 minutes, do it again and then finish off by wiping the area clean with a damp rag.
The mold will never be eliminated when you throw a coat of paint over it. Instead, it will keep growing and eventually reappear through the paint. If you notice a mold spot, avoid painting over it without removing it and cleaning the area first.
Pour vinegar into an empty spray bottle. Spray straight vinegar onto the mould and allow it to sit for 60 minutes. Wet a clean microfibre cloth with water and wipe off the mould.