German Village Commission Approves Slate Roof Replacement as One-Year Test Case

The German Village Commission granted unanimous Certificate of Appropriateness approval on Wednesday, Oct. 7, for an exterior alteration at 783 City Park Avenue to replace an actively leaking slate roof with CertainTeed Highland slate asphalt shingles.

Under the commission's approval, the installation of the New England Slate-colored asphalt shingles will serve as a formal one-year test case, allowing commissioners and city historic preservation staff to monitor the material's visual compatibility and durability in the historic district.

Municipal permit records for application COA 2600932 describe the project as removing the failing slate roof across the 1,113-square-foot roof area, repairing rotted soffit and fascia for box gutters, replacing a skylight, and updating rubber roofing on the property.

The decision addresses an ongoing dilemma for German Village property owners, who frequently face steep costs to repair or replace aging historic slate roofs. Traditional natural slate installations can cost tens of thousands of dollars more than modern asphalt alternatives, prompting property owners to seek relief when roofs suffer active leaks or extensive deterioration.

However, the City of Columbus maintains a narrow list of pre-approved asphalt shingle products for historic districts, limiting homeowners' options for direct administrative approval without a full commission hearing. Historic preservation guidelines emphasize retaining original materials or replacing them in-kind whenever feasible to safeguard the architectural character of the neighborhood.

During review of the City Park Avenue property, commissioners highlighted how formal test cases create a structured pathway to evaluate newer synthetic and dimensional asphalt products that replicate the texture and appearance of natural slate. If test installations perform well over their monitoring periods without weathering issues or aesthetic mismatch, the commission and historic preservation staff can consider adding those materials to the city's approved shingles list.

Adding proven alternatives to the city's approved roster would enable future applicants to secure administrative staff approvals without waiting for monthly commission agendas, lowering procedural hurdles and costs for homeowners. Commissioners also noted that successful test cases in German Village could encourage other Columbus historic preservation panels to review and expand their own acceptable roofing material standards.