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Your Signs & The Heat

We’re in the middle of summer when temperatures can be scorching. You’re ready for an outdoor sign but what materials should you be looking at to withstand the summer heat? We’ve outlined the top 3 materials for outdoor signage, their benefits and their downfalls.

Red translucent acrylic letter with aluminum cabinet for San Diego City College


Acrylic is one of Motivational Systems‘ most popular materials for signage for indoor and outdoor use. Acrylic has a high gloss surface similar to glass that reflects a feeling of quality. Acrylic comes in all different sizes and is versatile for your signage needs as it can be cut into different shapes, painted to be any color and so much more. It’s waterproof, UV stable and highly durable. Acrylic signs are best suited for lettering where only one side shows. For double-sided signs, we recommend other materials like aluminum composite.

Aluminum composite parking directional sign for The Grove

Aluminum Composite

Aluminum composite is a material made up of two pre-painted sheets of aluminum with a solid polyethylene core (the world’s most common plastic). Aluminum composite is incredibly durable and pleasing to the eye. Aluminum composite can be cut into any shape without losing its structural integrity. Although aluminum composite looks like aluminum signage, because of the plastic core, it is lighter weight and more shock absorbent, making a great outdoor sign. Aluminum composite is a more expensive material, but if you’re looking for a metallic finish, aluminum composite is a great option over aluminum for outdoor signage.

Coroplast Temporary Directional Signage


The last outdoor sign material we recommend is Coroplast. Coroplast is an ultra-lightweight corrugated plastic material. It is best used for short-term and temporary signage. Coroplast is essentially plastic cardboard that is waterproof, weather resistant and stain resistant. Anything can be printed on Coroplast and it is very inexpensive. Although Coroplast will not look it’s best forever and the ink used for your graphics may fade over time, it will endure the elements for several months.

Still want to know more about what material is best for you sign application? Call Motivational Systems‘ sign experts for advice.