Post-restoration verification

A documented final evaluation comparing completed work with the baseline, approved test or mockup, and agreed acceptance criteria.

Meaning and boundaries

Verification confirms the stated scope and observations; it does not prove hidden-crack removal, original strength, future performance, or compliance outside the evaluator's authority.

Why it matters in glass restoration

It closes the work record with consistent photographs, viewing conditions, measurements, exceptions, and customer acceptance.

Related terms

• Baseline condition
• Condition photograph
• Acceptance criteria
• Repeatability

References

• U.S. National Park Service — Preservation Matters: Stained Glass
  Publisher’s original source
• U.S. General Services Administration — Cleaning Historic Masonry
  Publisher’s original source
• National Institute of Standards and Technology — NIST TN 1297: Guidelines for Evaluating and Expressing Measurement Uncertainty
  Publisher’s original source
• National Glass Association — Iridescence in Heat-Treated Architectural Glass
  Publisher’s original source