ADA Guidelines for signage require tactile text that rises at least 1/32" above the sign surface. Applied letters are attached to the sign face with pressure-sensitive adhesive that holds them firmly in place.
Here's how the signs are made:
Applied Signs
2. With a computer-driven mechanical or laser engraver, cut an outline of each letter or number through the attached piece of material. Remove the excess material to reveal the tactile text.
3. Squeeze the letters to the sign surface to fully activate the adhesive and hold the them securely in place.
Inlaid Tactile Sign in an Aluminum Modular Frame Spec Sheet (Word™ document)
1. Place a contrasting piece of engraving material with pressure-sensitive adhesive on the sign face. Usually that material is 1/32" inch thick.
Inlaid Tactile Sign in a High-Impact Styrene Modular Frame Spec Sheet (Word™ document)
