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Historic Preservation Board debates street‑facing low‑e glazing, seeks performance standard and vendor input
Summary
Board members debated policies on low‑e (low‑emissivity) glazing for street‑facing facades, expressing concern about green/bronze tint creep and enforcement. They asked staff to convene the building department and a glazing representative to propose a performance measure (e.g., VLT) and sample materials.
Board members and staff spent an extended portion of the April 28 meeting discussing whether low‑e glazing should be allowed on street‑facing facades in historic districts and how to make a clear, enforceable standard.
Caleb Lauks and other members recounted instances where low‑e or tinted windows installed on front facades produced visible green or bronze hues. "Low‑e makes glass look green because the iron content…
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