Why ADA Signage Compliance Matters
Every commercial building in Minnesota must meet the Americans with Disabilities Act (ADA) signage standards. Non-compliant signs can trigger costly fines, delay certificate of occupancy, and create liability exposure for building owners. Whether you are constructing a new medical office in Bloomington or renovating a retail space in downtown Minneapolis, understanding these requirements upfront saves time and money.
The ADA Standards for Accessible Design, maintained by the U.S. Access Board, govern which signs need tactile and Braille elements, how those elements must be formatted, and where the signs must be mounted. Minnesota also enforces the Minnesota State Building Code, which references ICC/ANSI A117.1 and can impose additional requirements beyond the federal baseline.
Which Signs Must Be ADA Compliant?
Not every sign in a building requires tactile characters and Braille. The ADA draws a clear line between permanent room identification signs and other signage types.
Signs that must comply with tactile and Braille requirements include:
- Room identification signs (offices, restrooms, conference rooms)
- Tactile EXIT signage at egress doors
- Stairwell floor-level signs
- Room numbers on permanent rooms
Signs that do not require tactile or Braille elements include:
- Temporary signs and directories
- Informational or directional signs (these still require visual accessibility, such as proper contrast and text size)
- Building addresses and company logos used purely for branding
Tactile Character Requirements
Tactile characters must be raised a minimum of 1/32 inch from the sign surface. The ADA specifies uppercase sans-serif characters between 5/8 inch and 2 inches in height. Character spacing, stroke width, and the ratio of width to height all have defined acceptable ranges.
Key specifications include:
- Case: All uppercase letters
- Height: Between 5/8 inch and 2 inches
- Raised depth: Minimum 1/32 inch above the sign surface
- Font style: Sans-serif, with no italic, oblique, or decorative styles
- Stroke width: Must fall within a specific ratio to character height
Getting any one of these measurements wrong can cause a sign to fail inspection. One of the most frequent mistakes we see is the use of mixed-case lettering or serif typefaces on permanent identification signs.
Grade 2 Braille Requirements
All tactile signs must also include Grade 2 Braille positioned directly below the corresponding tactile text. Grade 2 Braille uses contractions and shorthand, unlike Grade 1 Braille which spells out each letter individually. The ADA specifically requires Grade 2.
Braille dots must be:
- Dome-shaped and rounded
- 0.059 inch base diameter at the base
- 0.025 inch high minimum
- Spaced at specific cell intervals defined in the ADA standards
A common error is using Grade 1 Braille or placing Braille dots that are too flat to be read by touch. Both issues will cause the sign to fail.
Contrast and Finish Requirements
ADA-compliant signs must have a non-glare finish. High contrast between characters and the background is required, though the ADA does not specify an exact contrast ratio number for tactile signs (unlike digital accessibility standards such as WCAG). The standard calls for a light-on-dark or dark-on-light combination that provides clear visual distinction.
Finish guidelines include:
- Matte or eggshell finish on the sign face (no glossy surfaces)
- High contrast between text and background colors
- No patterns or images behind tactile text that could reduce legibility
Mounting Height and Location
Proper mounting is just as important as the sign itself. ADA standards require permanent identification signs to be mounted:
- On the latch side of the door (the side with the handle)
- So that tactile characters sit between 48 and 60 inches above the finished floor, measured to the baseline of the characters
- At least 18 inches from any protruding object so a person using Braille can approach the sign without obstruction
In Minnesota, alcoved doors and double-door entries sometimes create confusion about which wall qualifies as the latch side. When the latch side has no adjacent wall space, the sign should be placed on the nearest adjacent wall.
Common Inspection Failures
After fabricating and installing thousands of ADA signs across the Twin Cities, we have seen the same issues come up repeatedly during building inspections:
- Wrong Braille grade: Grade 1 instead of Grade 2
- Incorrect mounting height: Tactile characters outside the 48-to-60-inch band
- Mounted on the wrong side of the door: Hinge side instead of latch side
- Glossy finish: Reflective surfaces that create glare
- Text too small or too large: Outside the 5/8 to 2 inch range
- Missing Braille entirely: Especially common on restroom and stairwell signs
Each of these issues requires the sign to be refabricated or repositioned, adding cost and delay to the project.
How Dimension Sign Ensures Compliance
At Dimension Sign, ADA compliance is built into our production process from the start. Our team verifies every specification against current ADA and Minnesota State Building Code requirements before fabrication begins. We use precision CNC routing to achieve exact raised-character depths, and every Braille cell is checked for proper dome shape and spacing.
We work directly with general contractors, architects, and property managers throughout the Twin Cities metro to deliver ADA sign packages that pass inspection the first time — as standalone orders or as part of a complete construction signage package. For hospitals and clinics, where ADA compliance carries the most scrutiny, see our healthcare signage services.
Need ADA-compliant signage for your construction project? Contact our team for a quote and we will review your plans, confirm which signs require ADA compliance, and deliver fabricated signs ready for installation.