10 Best Exterior Primers 2026 in the United States

The Zinsser 2000 Bulls Eye 1-2-3 Water-Base Primer is versatile, working well on both indoor and outdoor surfaces. This primer has excellent surface compatibility, sticking to all surfaces without the need for sanding. This makes it easy to apply, even for those who might not have extensive painting experience. The acrylic formula is breathable and flexible, which means it resists common issues like blistering and peeling, especially useful for exterior applications where weather resistance is crucial.

Additionally, its rust-inhibitive properties make it suitable for new metal surfaces, protecting them from corrosion over time. The primer also excels in blocking stains, including graffiti and tannin bleed, ensuring a smooth and clean finish. Its low odor makes it more pleasant to use indoors compared to other primers with strong smells.

The large 640-ounce volume is ideal for bigger projects, but it may be more than needed for smaller tasks. Those looking for a reliable, multi-surface primer that performs well in various conditions will find this product effective.

The Zinsser 276087 White Mold Killing Primer is a versatile water-based product designed for both interior and exterior use. Its standout feature is its ability to paint directly over mold, mildew, and odor-causing bacteria, making it a practical solution for surfaces prone to moisture issues. Additionally, it has EPA registration, ensuring it meets safety and efficacy standards.

This primer is compatible with masonry and metal surfaces, making it suitable for various applications, including binding chalky siding. Its matte finish provides a smooth, non-glossy appearance, and it comes in a convenient 32-ounce can, covering up to 160 square feet per can. The primer dries quickly, with a full cure time of just one hour, which is beneficial for time-sensitive projects.

This product is best suited for individuals dealing with mold or mildew issues on masonry or metal surfaces, both indoors and outdoors.

The KILZ Original White Flat Oil-Based Primer is well-known for its strong stain blocking capability, handling tough stains like water marks, smoke, tannins, ink, grease, and even sealing odors from pets and food. It works on walls and can be used under both latex and oil-based paints. Although it’s listed for both interior and exterior use, it’s primarily designed for indoor applications, which might limit its weather resistance compared to primers made specifically for outdoor surfaces.

Its drying time is fairly quick—about one hour to dry and cure—so you won’t have to wait long before painting over it. The finish is gloss, which may not be typical for all primers but can be useful depending on your project.

If you’re looking for a primer that blocks serious stains and seals odors effectively inside your home, this product performs well. For exterior projects exposed to harsh weather, other primers with stronger weather resistance might be a better fit.