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 3 Premium Primer is a versatile option for those needing a reliable primer for both interior and exterior surfaces. It excels in surface compatibility, working well on a variety of materials like drywall, wood, brick, and metal, making it highly adaptable for many projects. The primer's advanced acrylic polymer formula ensures exceptional adhesion, helping the topcoat stick more effectively, which can extend the longevity and beauty of your paint job. This feature is particularly useful for homeowners looking to protect their investment in paint and materials over the long term.

Another significant strength is its weather resistance. The mildew-resistant formula ensures durability in different environmental conditions, making it suitable for outdoor projects. The primer also dries quickly—within 30 minutes to the touch and ready for a topcoat in an hour—which can speed up the painting process considerably. Stain blocking is another area where the KILZ 3 Premium Primer shines. It effectively covers medium to heavy stains, providing a clean, even base for painting. This can save time and effort, especially in renovations where underlying stains might otherwise seep through the new paint.

Additionally, its low odor and very low VOC levels make it a more pleasant and safer option to use, especially in enclosed indoor spaces. However, the product isn't without its drawbacks. While it offers impressive coverage of 1500-2000 square feet per 5-gallon pail, the initial cost might be a consideration for some users. Additionally, due to its thicker finish, it may require more effort to apply smoothly compared to thinner primers. In summary, the KILZ 3 Premium Primer is a robust choice for a primer with excellent adhesion, rapid drying time, and superior stain blocking capabilities, though its thicker consistency might require a bit more work during application.