ADA signs are supposed to be “non-glare.” Can we use metals at all for ADA signs?
You can, but remember that it should have a minimum 70% contrast with the characters and that there can be no reflection or glare. Most brushed metals and metals with a “satin” finish would not meet the glare standard in the ADAAG Appendix. A very light natural aluminum with a slight blasted finish to cut glare may work with black characters. A dark oxidized bronze would need very light characters. However, a creative sign designer can find many ways to use even highly polished metals as decorative elements in sign systems without compromising the readability of the message. One possibility is a “combination” sign, with both visual and tactile sections. The tactile section does not need to be visible, so lack of contrast and a shiny surface are fine, and the tactile sign portion can be integrated into the design. If you are using metal for its durability rather than for its metallic finish, remember that painted metal is susceptible to scratching and to wear from regular cleaning and t
