Siding (noun)

1. Materials applied to the exterior of a building to cover the walls.
2. The material used to cover the exterior walls of a building.

Origin:

Late 19th century: from side + -ing.

Examples:

1. The house needs new siding.
2. The siding on the house was damaged by the storm.
3. The siding was made of vinyl.
4. The siding was painted a light blue color.
5. The siding on the house was replaced with a more durable material.