Start with the conditions, not the catalog
Flashing, sill condition, the frame material, glass package, trim restoration, and solar exposure all shape the result about as much as the window unit itself does.
Build a complete scope
- Existing conditions and likely cause
- Preparation and protection
- Materials, compatibility, and installation details
- Permits, testing, cleanup, and restoration
- Exclusions, warranty terms, and change-order process
Joliet context
Opening and trim repair comes up most often on Joliet's older building stock -- the East Side's 1852-1873 Queen Anne-era homes and the downtown core tied to the city's 1834 original plat -- where a century-plus of settling, moisture, and prior repairs can leave sills, jambs, and trim needing attention before any new window can be set correctly.