There are a few basic rules that should be followed to ensure correct adhesion of the vinyl to the substrate. Thorough preparation is the best way to obtain successful results. It is essential that the surface of the substrate is free from oil, grease, wax, tar, dust and other contaminates. This is a simple process and only takes a few minutes, first wash the substrate thoroughly with soapy water, this will remove the dust and dirt. The next step is to remove any petrochemical contaminants such as tar, wax and grease, this can be done by using readily available automotive products found in most motoring shops. The time taken in preparation is the key to success, leaving contaminants on the surface of the substrate is the most common reason for the vinyl failing to adhere.
As a general rule vinyl graphics and lettering should be applied within the temperature range of 8 to 32 degrees Centigrade. Under hot conditions, water can be used to cool the surface, and cold surfaces can be warmed carefully with a heat gun or hair dryer. (Only a gently heat should be applied to prevent damage to paintwork etc.) Static can be a problem but it is easily overcome by using anti-static wipes, or a light misting of Isopropyl alcohol, water or application fluid. All graphics supplied by Willow Signs for DIY application are pre-spaced on silicon release paper with transfer tape, ready for application to substrate. There are two basic methods of vinyl application, "wet" and "dry". The dry method requires a fair amount of skill and experience and so the preferred method for DIY use is the "wet" technique .
Correct positioning is important, and so the graphic should be positioned prior to removing backing paper to ensure correct alignment of graphic to substrate, masking tape can be used to mark reference points.
