ADA Signs and Guidelines

Americans with Disabilities Act (ADA) is a law that was enacted in 1992. Its purpose is to provide people with disabilities with easy access to public buildings, services, and employment.

SDDI Signs is very familiar with the ADA laws and will help ensure your interior signage package meets all guidelines.

Art Information

Correct preparation of digital artwork files is a crucial aspect of helping us meet your deadlines. Please download the Artwork Information Guidelines to learn more.


Almost any laminate can be used in manufacturing a sign. Laminates can help tie in other architectural aspects of your building to the signage.

Color Readability

One of the most important factors in designing both interior and exterior signs is color. Choosing the right colors will impact the visibility and effectiveness of the sign.

The more obvious contrasting visible colors are black, red, and white. We can help create your signage to look aesthetically pleasing while maximizing the effectiveness of your individual sign or entire sign package.

Letter Height/Distance

Letter height, distance, size, color, and contrast between lettering and background all have influences on the readability of a great signage. To achieve maximum readability, the size of the lettering must increase proportionately with the distance between the sign and the person reading it.


Paint Manufacturers

SDDI Signs offers the greatest variety of dimensional letters available today, from traditional flat-cut and fabricated letters to painted and laminated acrylic letters. Each cut or fabricated metal letter is manufactured one by one in aluminum, bronze, brass, copper or steel using state-of-the-art manufacturing techniques.

We also have several metal finishes, giving you the choice of dazzling shine, brilliant color, or natural and antiquated metal.

Our cut acrylic letters offer a wide range of finishes as well. Pick a laminate and have it painted or choose from one of 30 different standard acrylic colors. Combine these finishes with an extensive selection of letter styles to design signs that reflect your individual image.

Vinyl Color Charts

SDDI Signs uses high-performance vinyl films from 3M, Gerber, and Arlon.