Materials

Aluminum

Sheet aluminum comes in a variety of colors , as well as mill, bright and brushed finishes at .040 gauge, and fewer colors in thicker gauges. It is relatively lightweight and flexible at .040. It can be bent to create a box shape, as well. It is waterproof, and will last up to about 15 years outdoors.

Coroplast

Polypropylene Plastic Sheets come in a variety of colors and are an inexpensive short-term material. It is lightweight, fairly rigid, waterproof and will last up to about 5 years outdoors. It comes in 4mm, and a 10mm in white only.

Aluminum Composite

Aluminum Composite panels are like a sandwich of the two above materials. At 6mm thick, it has more rigidity than sheet aluminum, but is still fairly lightweight. It comes in a variety of colors at 6mm, and white only at 10mm. It is waterproof, and will last up to about 15 years outdoors.

Expanded PVC

Also known as Sintra and Celltec, comes in a variety of colors at 3mm and 6mm and white in thickness up to 1”. It is a bit heavier, and can be routed for shapes and letters, and custom painted. It is waterproof, and will last up to about 10 years outdoors.