NSGCS can provide fully comprehensive specifications for virtually every stained glass window project.
At NSGCG, with over 75 years’ experience, we adhere to the internationally recognized guidelines of the Corpus Vitrearum, ensuring that each stained glass project respects its historical context and cultural value. We emphasize thorough documentation, from initial research to every step of conservation, following the ethical principles that prioritize minimal intervention and reversibility.
Our preventive conservation measures, including protective glazing systems are
tailored to each window’s needs, align with these international standards. In every project, from site preparation to final installation, we balance conservation best practices with your unique needs.
What Our Specifications Include:
• Stained Glass Restoration Details For: Repair, releading, painting, bracing, and structural specifications, always adhering to international conservation ethics to preserve historical authenticity.
• Installation Specifications: Custom framing, installation, and longevity guidance, tailored to ensure long-term preservation.
• Materials & Products: We specify all stable, conservation-approved materials.
• Protective Covering Systems: Whether acrylic, polycarbonate, glass, or hurricane-resistant, we specify systems that meet conservation needs and protect your glass from mechanical and environmental damage.
Supporting You Through the Process:
We manage the entire process—from documentation, aligned with international standards, to project management, ensuring contractors follow specifications. We help you compare bids and advocate for your stained glass’s best interest. Working with vendors, contractors, architects and engineers, we ensure specifications align with the window’s context.
With appraisal authority and risk mitigation expertise, we document, protect, and value your stained glass, ensuring it stands the test of time.
Contact us today to begin a conservation journey rooted in global standards and expert care.
FAQs
We adhere to international conservation standards, conducting thorough research on the original artist, studio, materials, and techniques. Our specifications prioritize preserving original components, ensuring any intervention is historically appropriate and reversible.
We evaluate the lead matrix’s structural stability, glass condition, historical importance, and previous repairs. Specifications are tailored so that we intervene minimally while ensuring long-term stability. Full restoration is reserved for cases of severe structural failure.
Our specifications consider factors like humidity, temperature shifts, and wind load. We may include protective glazing, ventilation strategies, or specific materials suited for extreme climates to ensure both the stained glass and protective coverings perform optimally.
Every step is meticulously documented—from condition reports and photographic records to materials used and techniques applied. This ensures future preservationists understand exactly what was done and supports long-term conservation.
We focus on preserving original materials where possible, but when new materials are needed—such as structural supports or protective coverings—we select them for compatibility, longevity, and minimal visual impact. We always ensure that any additions respect the window’s original character.
