Exterior systems refer to the components and structures that make up the outer part of a building. This includes elements like walls, roofs, windows, and doors, which protect the interior from weather conditions and provide insulation. These systems are essential for maintaining the building's integrity and energy efficiency. Additionally, exterior systems often involve landscaping and drainage solutions that manage water runoff and enhance the building's aesthetic appeal. Proper design and maintenance of these systems are crucial for ensuring safety, comfort, and longevity of the structure, as well as contributing to the overall environment around the building.