Traditional materials used in the production of concrete formwork include wood, steel, aluminum, and plywood, as well as atypical materials such as fiberglass. The materials employed in the systems might be a mix of two. Wood products are the most often utilized formwork material. They provide easy-to-use forms that can be assembled by do-it-yourselfers or contractors and disassembled after use. Wood formwork is commonly supplied in standard sizes and shapes suitable for forming common concrete projects such as patios, walkways, and driveways. It is available in flat sheets that are attached with screws or nails, or in tubes that are joined with adhesive strips or wires. Wood formwork is usually painted white to reduce its impact on the colored concrete once it has been removed. The second most common formwork material is steel. This type of formwork is generally produced in a factory and shipped to the job site in large sections that are then welded together under work site conditions. Steel formwork is strong and durable but requires an experienced contractor to install it. Forms made of this material are usually painted black to avoid reflecting light into the surrounding area during evening construction activities. Aluminum formwork is becoming more popular due to its lightweight characteristics. These forms can be easily transported to the job site and manipulated by one person. They can also be taken down and stored away without damaging them.