How to Add Texture to Painted Walls

Sand the wall surface with a fine-grit sanding pad to make sure the surface is completely smooth.

Wash down the wall with a damp rag to remove all of the dust left from sanding. Allow the wall to completely dry.

Pour textured paint into a paint tray. Roll the nap roller in the tray to saturate it with paint. The roller should be wet with paint, but not dripping.

Roll an even coat of textured paint onto the wall. Apply the textured paint in small sections to make it more manageable. Allow the first coat to dry for at least four hours, and apply a second coat if needed to achieve the desired texture.