Yes, Kilz paint will prevent mold from forming as long as the area is free of mold and mildew when the Kilz paint is applied. This makes it great for damp areas where you want to prevent mold growth.
Moisture buildup and food is what creates mold (food meaning mold food, most likely cellulose). Kilz does do a good job of keeping mold from growing back, because it seals porous surfaces, and will help make the surface mold-resistant in the future.
Kilz is a well-known brand of primer that offers several products specifically designed to combat mold and mildew. Their Kilz Premium and Kilz Mold & Mildew primers are formulated to inhibit the growth of mold and mildew on surfaces, making them suitable for areas prone to moisture, such as bathrooms and kitchens.
KILZ 2 ALL PURPOSE primer also blocks light to medium stains and provides a mildew resistant coating. Use on interior and exterior surfaces including drywall, woodwork, plaster, stucco, paneling, masonry, brick, concrete, galvanized and painted metal.
A popular choice is Zinsser Mold Killing Primer, which is formulated to prevent mold and mildew growth. This type of primer not only covers stains but also contains fungicides that kill existing mold spores and prevent new ones from growing.
When it comes to keeping out moisture, silicone sealant is best for bathroom use. Silicone is waterproof and adheres very well to common bathroom substrates such as tile and glass. Furthermore, there are acetoxy silicone sealants that include fungicide, which makes them mold- and mildew-resistant.
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.
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.
KILZ® Mold & Mildew. Ideal For: Moisture-prone and high-humidity environments such as kitchens, bathrooms, and laundry rooms. Highlights: A stain-blocking primer that resists mold and mildew growth on the primer film.
Both KILZ 2® All Purpose and KILZ 3® Premium are perfect for interior and exterior priming on multiple surfaces. KILZ 3® Premium is the right primer for heavy duty sealing and blocking out stains or dark colors.
Mildew has a gray, white or light brown color and generally rests flat on the surface of a moist area. It has a powdery appearance that may have a distinct, foul odor. Mold has a fuzzy, raised appearance and in unaired areas has a strong, musty smell. It often appears in darker shades of black, green and red.
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.
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.
KILZ® MOLD & MILDEW. Interior | Exterior Primer. 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.
Shelf life under normal conditions is two years unopened. Partially used cans might develop skinning if not tightly sealed.
Use on interior and exterior surfaces including woodwork, drywall, plaster, paneling, masonry, brick, painted metal and properly prepared glossy surfaces†. Use under or over water-based or oil-based paints. Not recommended on flooring.
But remember that most paints today contain primer, so while this step won't hurt, I do not believe it is necessary. However, I always prime drywall; especially exposed joint compound prior to spraying texture and Kilz2 has worked fine for this application.
Stir thoroughly before and occasionally during use.
In general, one gallon of paint or primer will cover roughly 250-350 square feet of surface. Save time and money with the KILZ paint calculator to estimate the amount of paint or primer needed for your next project.
Can You Wait Too Long to Paint After Priming? Generally speaking, you should paint within a couple of weeks after priming. Some primers can be left for up to 30 days, but that's pushing it.
For those taking on more complex projects, including blocking smoke or pet odors, covering dark paint colors or heavy stains, there is a KILZ® Primer for you too! KILZ 3™ Premium is one of our more heavy-duty and high hiding formulas, making it ideally suited for blocking old dark colors or covering substantial stains.
Zinsser Mold Killing Primer is used to paint over and kill all existing mold, mildew, moss, fungi, odor causing bacteria and any other fungal organisms, it does not prevent mold from growing on the top coat.
KILZ 2 ALL-PURPOSE primer may be tinted with up to 60 ml of universal colourant per 3.79 L for non-stainblocking projects. Tinting to a lighter shade than the topcoat is recommended. SURFACE PREPARATION: The surface must be clean, free of dust, grease, wax, peeling paint, mold, mildew and wallpaper paste.