Custom wood, steel, and aluminum windows that match historic profiles while delivering today’s performance.
Built to match historic profiles.
Custom historic window installations for brownstones, landmark properties, and architecturally significant buildings completed by OpenSky Window
Find answers to common questions about custom historic window manufacturing, landmark compliance, glass performance, and installation.
Yes. OpenSky designs, manufactures, and installs new custom windows that match historic profiles and architectural details. We work with wood, steel, and aluminum systems for brownstones, townhouses, landmark properties, and architecturally significant buildings.
Yes. We can support projects involving the New York City Landmarks Preservation Commission, including profile matching, material and finish selections, window details, drawings, glass specifications, and documentation for LPC submissions.
Yes. Each system can be custom-built to reproduce the original proportions, sightlines, muntin patterns, divided-light layouts, arches, decorative glass, hardware, and exterior finishes while providing modern performance.
We offer custom historic-style windows in:
The best material depends on the original architecture, required profile, project budget, and performance goals.
Yes. Depending on the system and required profile, we can incorporate insulated glass, triple-pane glass, laminated sound-control glass, or vacuum insulated glass (VIG) to improve thermal efficiency and sound reduction without compromising the historic look.
We offer enhanced sound-control glazing and insulated window systems designed to reduce exterior noise. The recommended glass configuration depends on the window size, frame material, building conditions, and level of sound reduction required.
OpenSky offers a 10-year warranty covering qualifying window systems and installation. Final warranty terms depend on the selected product, glass configuration, and project scope.
Yes. Qualified customers may access project financing, including:
Financing is subject to approval and project eligibility.
Typical production lead times range from approximately 4 to 12 weeks after final measurements, drawings, finishes, and specifications are approved. Complex shapes, custom decorative glass, and landmark documentation may require additional time.
OpenSky provides installation throughout New York and Connecticut. Custom window systems can also be supplied nationwide for projects with their own qualified installation teams.
Tell us about your window project, and we’ll get back to you with the next steps — no obligation, no pressure.
Built to match historic profiles.
