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(February 2009) posted on Wed Feb 11, 2009

A spotless surface yields a better vinyl application.

By Rob Ivers

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As any old-timer can tell you, a good whistle made from a reed or piece of wood emits a clear tone. But, it can be easily damaged. Small debris particles or a few drops of moisture will change the sound of a handmade instrument. To hit the intended notes, a whistle must be absolutely clean. The same principle applies to surfaces that receive vinyl.

Prep time

I reviewed instructional bulletins that addressed surface preparation from several vinyl manufacturers. Here are some excerpts:

• “It is always important to clean surfaces just prior to any installation.” -- Arlon Technical Information Publication #1

• “Surface preparation is a critical step towards successful vinyl graphic installations. Unfortunately, it is also a step easily overlooked and often misunderstood.” -- MACtac Technical Assistance Bulletin TA2032

• “Proper substrate cleaning and preparation prior to decal application is critical to the success of the decal. Failure to adhere to these requirements can cause adhesion loss and therefore reduce the durability and performance level of the decal. All substrate surfaces should be considered contaminated and must be cleaned prior to pressure-sensitive material applications. Be sure all edges, corners, crevices, and hard to reach areas are cleaned as well, these are difficult and often overlooked areas.” -- Avery Instructional Bulletin #1.10

• “Films can be applied to most substrates that are clean. All substrates must be considered contaminated and must be cleaned prior to application of film or sheeting, with the last cleaning step being done immediately before application. A freshly cleaned or painted substrate can quickly collect dust.” (3M Instruction Bulletin 5.1)

Apparently, vinyl manufacturers think cleaning is extremely important to the success of vinyl-graphic installations. One of the bulletins also stated, “It is the responsibility of the applicator to ensure the surface is clean and oil free, and properly tested and prepared for graphic and film application.” Clearly, the surface-cleaning buck stops with the installer. With that in mind, we’ll take a detailed look at cleaning.

Defining the problem