Targeted Building Envelope Rehabilitation

This contract covers the targeted rehabilitation of the building envelope for the McHenry County Government Center, focusing on curtain‑wall sealant replacement, entrance door system upgrades, and pedestrian‑bridge façade repairs. The work requires field‑verified quantity measurements, removal of existing sealants, cleaning of metal panels, and installation of new high‑performance BASF MasterSeal NP100 sealant in accordance with ASTM C1193 and the SWRI Sealant Guide. The contractor must also supply and install new glazing components, door hardware, and expansion‑joint seals, while complying with county procurement ordinances, insurance, bonding, and warranty requirements. • Scope: Curtain‑wall systems, entrance doors, pedestrian‑bridge sealant work across three base‑bid locations with four optional locations. • Procurement: Competitive sealed‑bid (single award) with a bid deadline of 9:00 AM CST on Feb 16 2023 and bid opening via WebEx on the same day. • Timeline: Project execution slated from July 1 2023 to full completion by Oct 31 2023, with substantial completion required by Sep 30 2023.