Are outdoor custom signs weatherproof?

Most outdoor signs are built to survive rain, wind, UV, and temperature swings, but weatherproofing depends on the substrate and finish you choose rather than the sign being outdoor by default. Pick a material rated for exterior use and the sign holds its color and shape through the seasons.

• Corrugated plastic (coroplast): lightweight, waterproof, and ideal for short to mid-term yard placement.
• Aluminum and PVC: rigid, rustproof, and rated for years of exterior mounting.
• Feather and wind flags: made from weather-treated polyester that flexes in gusts instead of tearing.

UV-resistant ink plus a laminate or protective coating adds the final layer of defense, keeping colors from fading in direct sun. For anywhere with heavy rain, wind, or freeze-thaw cycles, confirm the material is labeled for outdoor use before ordering.