200 E Delaware Condominium

CTLGroup was retained by the 200 East Delaware Condominium Association to provide a condition assessment of the original aluminum framed windows in the 35-story concrete framed building.

CTLGroup conducted an evaluation of the window’s performance characteristics including thermal performance, resistance to water leakage and air infiltration. CTLGroup’s condition assessment included the evaluation of the perimeter sealant, glazing, and window frames. At the conclusion of CTLGroup’s work, the firm provided a report with repair recommendations and associated estimated costs to the Association.

Scope of services included an exterior survey of building drops and an interior survey of 20 selected units. The firm conducted performance testing of in-situ windows to determine sources of water leakage and implemented trial repairs. A second round of testing was subsequently implemented to verify the effectiveness of CTLGroup’s proposed trial repairs. A report was provided to the condo association board detailing a phased approach for repairs. Based on the findings in CTLGroup’s report, the board opted to implement a phased sealant repair schedule starting in 2014. They have postponed window replacement indefinitely.


Buildings & Facilities

Consulting Services

Building Science

Structural Engineering + Evaluation

Non-Destructive Evaluation

Repair, Restoration, Retrofit

Structural Condition Assessment

The 200 East Delaware Condominium was built in 1972 and stands 36 floors tall. This 188-unit high-rise is located in Chicago's Streeterville neighborhood.

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