The sun can take a toll on your sign. Painted finishes on your sign will last five to ten years or more depending on the weather exposure before needing to be touched up or replaced. South facing signs, for instance, will fade sooner than a north facing sign. Bright colors can show noticeable fading in as little as two years. You may want to turn your double sided signs around every few years to ensure equal exposure on both sides.
Signs are finished primarily with latex enamel paints. Refinishing signs is recommended once the fading becomes bad or the paint starts to peel. We can do this for you, or tell you how to do it yourself.
HDU signs: High density urethane is a relatively new sign substrate with incredible durability and longevity. This is a product that we often recommend. It can be carved and works excellent for dimensional signs.
Wooden signs: Signs made of wood can last a long time but they will require a fair amount of maintenance to keep them looking good. Wood cracks as it dries out and that will cause the paint to crack also. Wooden signs are also prone to warping.
Plywood signs: We use a MDO sign grade plywood for most of our flat painted signs. Painted finishes on MDO can last up to three times longer than the same finish applied to ordinary plywood. The edges will show the first signs of aging, and it’s important to re-prime and paint them before too much moisture enters the wood. We seal the edges of all exterior signs to prolong their life.
Metal signs: Steel will rust, so it’s good to inspect and re-paint as needed. A sign substrate called aluminum composite is a great choice for interior and exterior signs that need to last a long time. It is made of two thin layers of aluminum with a plastic core. It is generally 1/8″ thick and comes in 4’x8′ sheets and is relatively inexpensive.
Plastics and acrylic: Plastic signs can last a long time but they can also become brittle in the sun and expand and contract significantly with hot/cold temperatures so it’s good to know which plastic products work best for each situation.