Tips from the factory To avoid leaving air bubbles undermeath large vinyl areas spray a light film of Johnsons Baby Shampoo and water under the vinyl when applying. Just two or three drops of shampoo per pint of water will be sufficient lubrication to ensure that bubbles can be pushed free during application. Be sure to thoroughly clean the area underneath the vinyl before application - this can be done using a vinegar based cleaner (try windowlene!)