Use a light household cleaning agent, like warm, soapy water or rubbing alcohol, to thoroughly clean the surface. Clear away any cleaner residue or debris with a dry cloth. Debris can weaken the adhesive, so make triple sure you don’t have any clinging to your surface.
Before peeling away the decal backing, spray the surface with light, soapy water or glass cleaner. Peel away the vinyl’s backing and position the vinyl sticker onto the van.
Use a squeegee or small, flat, hard-edged object to squeeze any excess moisture. The best way to do this is to start in the middle of the decal and move toward the outer edges, using the squeegee tool to work out the liquid from behind the decal.
Peel away the remaining backing, wipe away the liquid from around the decal, and ensure the surface is dry. You are now done with the wet install application!