Adhesion primers are designed to help paint stick to a variety of surfaces that might otherwise be tricky to coat. You can use them on materials like metal, plastic, wood, and even previously painted surfaces. Always check the product label for specific surface compatibility, as some primers are made for certain materials. If you're working with a unique surface, doing a small test patch can help you see how well the primer bonds before starting your full project.

Light sanding can help improve the bond between the primer and your surface, especially if it's glossy or smooth.

• Wipe away dust after sanding to keep the surface clean.
• Some adhesion primers are formulated to stick without sanding, but prepping the surface can still help with durability.

Drying times for adhesion primers can vary, but most recommend waiting at least 1 hour before applying paint.

• Humidity and temperature can affect drying time, so check the label for guidance.
• Touch the surface gently—if it's dry to the touch, it's usually ready for paint.

Many adhesion primers are suitable for both indoor and outdoor use, making them a great choice for exterior projects.

• Look for "interior/exterior" or "all-purpose" on the label to confirm outdoor compatibility.
• Outdoor surfaces should be clean and dry before priming.

Cleanup depends on whether your primer is water-based or oil-based.

• For water-based primers, soap and water usually do the trick for brushes and spills.
• For oil-based primers, you'll need mineral spirits or paint thinner.