Chicago’s Old Post Office

• Location: Chicago, IL
• Size: 360,000 square feet
• Roof Type: Modified Bitumen, Hot Fluid Applied Membrane and PMMA
• 50 different roof levels-rare
• Complete removal of roofing systems down to structural deck 
• Installed and applied modified vapor barrier to service the temporary roof
• Installed tapered insulation torch applied modified PMMA 
• Systems on all penthouse pylons on setback roofs
• Install hot fluid applied membrane at main green roof level
• 6 floor east level light well court and various grade level areas
• 1850 helicopter picks for roof demo debris removal
• 1300 helicopter picks for new roofing material for final roof install