Northwestern University Alice S. Millar Chapel

Water infiltration lead to distress at three of the four building corners including:

• Shifting and cracking of lannon stone at the buttress locations
• Open and cracking lannon and limestone mortar joints
• Sealant failure at skyward joints and window perimeters
• Corrosion and expansion of steel support elements

BAMR provided façade restoration and reconstruction as follows:

• Documenting, salvaging and reinstalling the lannon stone at 3 of the 4 buttresses
• Grinding and tuckpointing of 100% of the lannon stone and limestone joints
• Sealant replacement at 100% of the window perimeters
• Replacement and notching of bluestone to eliminate sky joints
• Water repellant was applied to 100% of the lannon, limestone, and bluestone