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ADAAG Manual

Note: This document, portion of document or referenced document was published prior to the 2010 ADA Standards, and all or part of this information may only apply to Safe Harbored elements.

Finish and Contrast [4.30.5]

All signs covered by 4.30 must have a non-glare finish, such as matte or eggshell. Recommendations: An eggshell finish is recommended. Consideration should also be given to light sources and the ambient lighting to prevent glare on sign surfaces. Examples of acceptable and unacceptable finishes, according to SEGD, include:

Material  Acceptable Unacceptable
finish paints and inks eggshell, matte gloss or semi-gloss
acrylic sheet, mylar, frosted glass most non-glare types polished surface
self-adhesive vinyl film most non-glossy types glossy
metal certain satin or random brushed finishes polished or directional brushed finishes

Recommendations: Light characters and symbols on a dark background are generally considered easier to read than dark-on-light (either is allowed). A contrast of at least 70% based on the light reflectance value is recommended.

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