Big box stores typically consist of a steel framework of structural columns and roof joists overlaid with roof decking. Walls are usually Single Wythe concrete masonry units (CMU), tilt up concrete panels, or colored block and brick. The CMU often consists of one or more block types - smooth face, split face, or scored block, all of which are painted. Smooth tilt up panels are painted or sealed, and colored block and brick are sealed. The walls may also be covered with an Exterior Insulation and Finish System (EIFS) or stucco, both of which are painted.

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