Aluminum signs (also referred to as sheet metal signs, flat signs, tin signs, or blade signs) boast all the practicality of modern signage, while also having the ability to impart an old-timey, “vintage” feel to your storefront should you so desire. After weather-worn wooden signs predominated and before flashy neon signs came into vogue, sheet metal signs provided a highly durable, visually appealing and cost-efficient means of advertising your business.