What is the best all-purpose primer? The best all-purpose primer is often considered to be Zinsser Bulls Eye 1-2-3 water-based primer, widely recommended by professionals and DIYers for versatility. It adheres to many surfaces including drywall, wood, masonry, metal, and glossy surfaces without heavy sanding, blocks light to medium stains, low odor, easy soap and water cleanup, and can be used interior and exterior. Kilz 2 All-Purpose is also good budget all-purpose, similar performance but slightly less adhesion on glossy. For those wanting premium all-purpose with mold resistance, Zinsser Bulls Eye 1-2-3 Plus is enhanced with mold protection. For oil-based all-purpose, Zinsser Cover Stain is strong for heavy stains. Many pros consider Zinsser 1-2-3 best because it combines adhesion, stain blocking, low odor, and ease of use in one product, saving time. Behr Multi-Surface and Benjamin Moore Fresh Start are also good. So best all-purpose depends on needs, but Zinsser Bulls Eye 1-2-3 is most frequently cited as top all-purpose for general home projects due to balance of adhesion, stain blocking, and user-friendliness.
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