How do I apply a custom window cling?
To apply a custom window cling, the surface must be clean, smooth and as close to room temperature as possible. Cold surfaces reduce the cling of the vinyl. Small decals (305 mm x 305 mm or smaller) may be applied dry.
Large decals (305 mm x 305 mm or larger) should be applied by wetting the surface and the static cling with glass cleaner or a soap and water mixture. For either dry or wet application, use a squeegee, credit card or something similar to smooth the decal onto the surface.
Related article: How long can window clings retain their clinging ability?