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Commission explores requiring simulated or true divided-light windows in Old Town
Summary
Commissioners debated tightening the UDO's guidance on windows — moving from 'encourage' to 'require' true divided lights or simulated divided lights (SDLs), setting minimum muntin dimensions, and clarifying application/COFA requirements to avoid snap-on or grid-between-glass products that alter historic character.
The commission discussed whether the Unified Development Ordinance (UDO) should be amended to require true divided-light or high-quality simulated divided-light (SDL) windows in the Old Town Historic District rather than merely encouraging them. A town staff presenter reviewed photos and manufacturing examples that show differences among true divided lights, SDLs, and newer grid-between-glass or snap-on muntin approaches.
"The grid between the glass window really has nothing to do with traditional construction patterns as far as the way it's put together," the presenter said, arguing that SDLs better recreate the historic effect. Commissioners agreed that some contemporary products (grid-between-glass or snap-on muntins) can look flat and lack the depth of historic sash construction.
Technical points dominated the discussion: commissioners proposed specifying minimum muntin thickness and requiring applicants to state the window manufacturer or SDLs on COFA/permit drawings so reviewers can confirm compliance. One commissioner cited dimension options and cost considerations: "They're, they're 0.625 and 0.75, 1 inch," describing available muntin sizes that could be prescribed. The presenter noted SDL technology and market choices have improved in the last 15 years and said cost, while a factor, may not pose a prohibitive hardship for many projects.
Staff suggested options for a future amendment: (1) change UDO language from 'encouraged' to 'required' for SDLs/true divided lights; (2) add minimum dimension standards for muntins; or (3) require applicants to specify SDLs/manufacturer in COFA applications. Commissioners asked staff to draft potential ordinance language and to consider guidance used by other cities (Charleston, Savannah) as part of the Old Town Master Plan update process.
