Composites are a unique class of materials that are composed of two or more separate materials. The resulting material is stronger and more durable than any of the components. Today, Composite facade are popular in Iran and Middle east. Aluminum composite sheets consist of three layers, including two layers of aluminum sheet and one layer of polyethylene material. The outer layer has an epoxy resin primer and a PVDF layer to stabilize the paint. The surface of the composite sheet is protected with a layer of film. The advantages of composites include excellent color variety, stability and long life in the face of various weather conditions, easy maintenance, the possibility of machining, bending and drilling on it and the implementation of very complex surfaces.