Surface preparation for stenciling

[Tomhanks]

What types of surfaces require special primer or preparation before stenciling to ensure the paint adheres properly and lasts?

[Downaski]

Some surfaces require special preparation or a primer before stenciling to ensure the paint adheres properly and lasts. Very smooth or glossy surfaces, such as glass, metal, laminate, tile, or glossy painted walls, usually need a primer or light sanding so the paint will stick.

Porous or rough surfaces, including bare wood, drywall, unsealed concrete, or textured plaster, often benefit from sealing or priming to allow an even finish and keep stencil edges clean.

Surfaces that are dirty, chalky, flaking, or otherwise uneven typically require cleaning, sanding, or a bonding primer before painting. Even with proper preparation, environmental factors such as moisture, sunlight, and wear can affect how long the paint lasts.

In general, surfaces that are very smooth, very porous, or otherwise difficult for paint to adhere to require some preparation. The specific steps depend on the material, the existing finish, and how the painted surface will be used. Testing on a small area first is often recommended.

[Tomhanks]

Is there a difference in preparation requirements between water-based and oil-based stencil paints?