Signage: Indoor vs Outdoors

There are some differences between indoor and outdoor ADA signs in terms of size and materials needed. These differences are due to the different environmental conditions that indoor and outdoor signs are exposed to, as well as the different requirements for visibility and accessibility.

Here are some of the main differences between indoor and outdoor ADA signs:

1. Size: Outdoor ADA signs are generally larger than indoor signs, as they need to be visible from a greater distance. The ADA requires that outdoor signs have a minimum character height of 3 inches, while indoor signs can have a minimum character height of 5/8 inch.

2. Materials: Outdoor ADA signs are typically made from more durable materials that can withstand exposure to the elements, such as rain, wind, and sunlight. Common materials used for outdoor signs include aluminum, stainless steel, and high-density plastics. Indoor signs can be made from a wider range of materials, including acrylic, photopolymer, and vinyl.

3. Contrast: Outdoor ADA signs need to have high contrast between the background and text or symbols, to ensure that they are visible from a distance. The ADA requires that outdoor signs have a minimum contrast ratio of 70%, while indoor signs must have a minimum contrast ratio of 50%.

4. Mounting: Outdoor ADA signs must be securely mounted to withstand exposure to wind and other elements. They may require special mounting hardware, such as anchors or brackets. Indoor signs can be mounted using adhesive or other methods that may not be suitable for outdoor use.

Overall, the main differences between indoor and outdoor ADA signs are related to size, materials, contrast, and mounting. By choosing the right materials and design elements for each type of sign, businesses and public entities can ensure that their signage is both visible and accessible to people with disabilities, both indoors and outdoors.