These are the best primers and sealers to prepare surfaces for painting, improve adhesion, and enhance durability. While they serve similar purposes, they have distinct roles:
• New drywall • Interior masonry • Wall repairs
• Concrete blocks • Cinder blocks • Masonry surfaces
• Metal, galvanized steel • Millwork, hardboard • Fiberglass, , plastic, tile
• Bare wood surfaces • Siding, trim • Sash, doors
• Plaster • Vertical concrete • Masonry
• Finished millwork • Strand & particle board • Plywood, lumber
• Ferrous metals • Non ferrous metals • Damaged galvanizing