SME was retained by the University of Michigan project team for the development of specialty coatings technical specifications for exterior and interior coating repairs for the Detroit Observatory. Constructed in 1854, the University of Michigan Detroit Observatory is a three-story historic astronomical observatory on the University of Michigan’s Ann Arbor campus. It was the first scientific research facility at the university and is the oldest observatory of its type in the nation.

The University of Michigan Detroit Observatory dome is a tin-clad flat steel panel roof with an off-white coating (last recoated in 1997). Certain locations on the roof had reportedly begun leaking when it was high pressure washed in 2005.

SME provided technical expertise on product selection and preparing the Division 9 Specialty Coating Specification, including the full removal of the existing coating and the proper preparation of the substrate to receive new coating. Additionally, the new system would be a long-lasting, flexible coating for both waterproof and aesthetic purposes.

During the coating design-phase assessment, a limited condition assessment of the dome structure was conducted. Findings indicated that the upper portion of the dome interior exhibited signs of water staining, blistered coating, and thermal anomalies in the infrared images. These findings indicated moisture intrusion and deteriorated wood elements. From here, SME anticipated that the upper portion of the dome system would require a complete structure and cladding removal and replacement, affecting approximately 200 square feet. SME’s services included assessing the structural and service condition of exterior wood sheathing and support elements and making appropriate repair recommendations.

SME recommended a tema-coated stainless steel panel system as a replacement option. This system offers a 50+ year service life plus high-corrosion resistance and is representative of the historic appearance of dome exterior.

SME also completed the design and provided restoration specifications and drawings for repairing the dome wood framing and replacing the metal roofing system in about three weeks.