Dirt and dust accumulates slowly on signs and the day-to-day changes may not be noticed. However, the change in color, visual appearance, and loss of sign brightness from this accumulation can be significant in a relatively short time. For this reason, we recommend that signs be washed a minimum of twice a year.

  There may be some locations where facilities may require more frequent cleaning. Generally, these areas are well known to local people. These locations are normally associated with heavy atmospheric pollution such as in dense industrial areas. Also, there may be some non-industrial locations such as areas in the South where heavy pollen and insects can create a need for frequent cleaning. In areas where these conditions exist, the faces should be cleaned at least four times a year to keep them looking clean and to remove any surface contaminations which may be harmful to the decorated plastic or vinyl Faces.

  It is possible that the contamination can be on the inside surface of the signs. If this occurs, the face will also need to be washed on the backside of the face. This must be accomplished with extreme care as the inside surface is a very thin layer of paint which can be very easily scratched or otherwise damaged. If, after cleaning the outside of the face, the contamination is still visible when the face is backlit, the inside of the face will need to be cleaned.


COMPATIBLE CLEANING AGENTS

• 3M Prep Team
• Scotch-brite
• Palmolive Liquid
• VM&P Grade Naphtha
• Windex with Ammonia

INCOMPATIBLE CLEANING AGENTS (DO NOT USE)

• Formula 409
• Lysol
• Pinesol
• Butyl Cellosolve
• Isopropanol Alcohol