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Planning committee backs ACM flashing and fiber-cement panels for Casey’s exterior
Summary
The Waterloo Planning Committee recommended that the City Council approve aluminum composite material (ACM) for the building flashing and a Nichiha fiber-cement panel behind the Casey’s sign, citing durability and an agreement to avoid exposed fasteners. The committee voted to forward the recommendation.
The Waterloo Planning Committee on July 6 recommended that the City Council approve a mixed-material approach for a proposed Casey’s convenience store, allowing aluminum composite material (ACM) for roofing and flashing while specifying Nichiha fiber-cement panels behind the store’s Casey’s sign.
Aaron Wolse, site development manager with Casey's Marketing Company, joined the meeting remotely to explain the requested materials and installation. "They're durable... This panel we install is warranted for a period of 20 years. The color holds fast for that period of time," Wolse said, arguing ACM resists warping, denting and corrosion compared with some other products.
Staff reviewed the city code’s list of permitted exterior materials — including brick, brick veneer, natural and cultured stone, and fiber-cement panels — and noted ACM is not listed explicitly. The committee discussed where the ACM would appear: the cap flashing and a red band behind the Casey’s logo that Wolse said comprises roughly 25% of the front elevation.
Committee members pressed for installation details and whether fasteners would be visible. Wolse said there would be seams but "no exposed fasteners" in the sign pocket. Members also raised concerns about metal panels denting when installed low on facades, citing prior cases in which metal at low elevations was changed to fiber-cement for durability.
Given those concerns, committee members proposed a compromise: allow ACM where it is functionally needed for flashings and roof terminations, but use a Nichiha fiber-cement panel or a comparable product behind the Casey’s logo to match the masonry appearance and reduce impact risk. One member moved to recommend approval of ACM for the roofing and cap flashing and to revise the permit application to use Nichiha behind the sign; the motion was seconded.
The chair called a voice vote. Members responded "Aye," and the committee approved the recommendation to forward the mixed-material proposal to the City Council. Following the vote, Wolse thanked the committee for considering the request and for the opportunity to join by Zoom.
The committee adjourned at about 7:15 a.m. The City Council will receive the planning committee’s recommendation and decide whether to accept the alternate materials as part of the permit approval process.
