Specifications include, but are not limited to: The project includes a targeted rehabilitation of the building envelope associated with the east and south elevations of the 1990 Expansion of the McHenry County Government Center. The specific Work to be performed includes targeted replacement of storefront window systems, through-wall flashings, masonry, and sealant joints as described in this specification and attached Sketches One through Twelve of Twelve including all components necessary for a complete and finished building envelope rehabilitation project. 1. Through-Wall Flashing Rehabilitation. Remove existing masonry components and through-wall flashing, properly prepare the receiving substrates, install new throughwall flashing assembly, and install existing and new masonry components. 2. Storefront Window Replacement. Remove the existing storefront window system, properly prepare the rough opening, and install a new thermally broken aluminum storefront window system with Low āeā insulated glazing. Mullion layout shall match existing. 3. Complete Sealant Rehabilitation. At all sealant joints on entire elevation of designated work area, remove existing sealant and backer rod, properly prepare the receiving substrates, and install new sealant and backer rod.