Featured In New York Times New York Magazine 5.0 Google (100 reviews)
Narrow custom leaded stained glass panel with intricate colored glass details in a window

Specialty Services

Stained glass repair & restoration.

Conservation, repair, and restoration of stained glass windows for churches, historic landmarks, and private residences. In-house artisans with decades of experience preserving irreplaceable glass.

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Ecclesiastical

01

Churches, cathedrals, and houses of worship.

Religious stained glass represents some of the finest craftsmanship in architectural history. From rose windows to narrative lancets, we restore ecclesiastical glass with the respect and precision these sacred works demand.

Our work on church doors and steel entryways — including projects like St. Paul the Apostle Cathedral — often involves restoring stained glass panels integrated into the metalwork, combining our glazing and metalworking expertise in a single project.

Carved wood door with custom leaded stained glass panels made for a client home
Residential

02

Transoms, sidelights, and decorative panels.

Victorian homes, brownstones, and estate properties often feature stained glass transoms, sidelights, cabinet inserts, and decorative ceiling panels. These pieces are integral to a home’s character and value.

We repair cracked glass, re-lead deteriorated panels, restore painted details, and fabricate historically accurate replacement pieces when originals are beyond repair.

Restored arched wood entrance door with a leaded stained-glass transom in a historic building
Commercial & Historic Landmarks

03

Courthouses, universities, and public buildings.

Large-scale stained glass projects in public and commercial buildings require careful logistics: scaffolding, phased removal, secure transport, and precise reinstallation. We manage the full scope from assessment through final installation.

Our NYS and NJ DOT-certified welders handle the steel and iron frames that house stained glass in many institutional buildings, ensuring both the glass and its supporting structure are properly restored.

Our Process

From survey to reinstallation – every step documented.

From a single residential panel to a whole building’s windows, every piece of glass is documented and tracked.

01

Survey & condition report.

Glass, lead, paint and frame assessed and photographed on site.

02

Careful removal & transport.

Panels numbered, crated and the opening weatherproofed.

03

Workshop restoration.

Cleaning, releading, glass repair and paint stabilisation.

04

Reinstallation & protection.

Reinstalled and weatherproofed, with protective glazing if specified.

  • Fully insured handling
  • Documented process
  • Free estimates in 24h

Related Window & Door Restoration

75+

Years of Expertise

AIC

Conservation Member

40+

Master Artisans

12mo

Workmanship Warranty

What Our Clients Say

★★★★★
Fantastic work!
Susan Gross Google review · 3 months ago
★★★★★
I didn't realize how terrible my antique chest on chest looked until Peter and his team worked their magic on it. Their craftsmanship is flawless. May the piece live for at least another 200 years!
Provenance Productions Google review · 4 months ago
★★★★★
I reached out to Peter for some information regarding a damaged chair, not only did he help me but went above and beyond to make sure I could repair the chair with ease. Would highly recommend using Olek!
Hanna Gonzalez Google review · 1 year ago
★★★★★
Olek, Inc. restored and reupholstered a vintage Eames lounge and ottoman for my client with beautiful results. They have a deep knowledge of the various versions and constructions of the piece, and offer excellent communication about the process. We took advantage of their pickup and delivery service, and opted for a leather from their offerings that is true to the style of the original piece. I would highly recommend Olek for reupholstery services and wouldn't hesitate to work with them again.
Lauren Stanley Google review · 1 year ago
★★★★★
My Park Avenue client needed a custom carved mantel mirror and additional repairs to his antique mantelpiece. Olek was able to provide the nicest, incredibly talented wood craftsman I have ever had the pleasure to work with. We watched Yuri do work on site and were simply enthralled with his professionalism and surprisingly quick work. I just want to find more work for him; it was so fun. Thank you to Mr.Triestman for organizing the work and keeping us on track.
marianne larsen Google review · 4 years ago
★★★★★
This summer, Olek restored various pieces of antique Italian furniture for The Italian Academy at Columbia University. I could not have found another company capable of such care and talent at bringing these pieces back to life! Their team was extremely professional, and the company is great at coordinating delivery. I would highly recommend Olek to anyone looking to restore furniture!
Barron Keith Preston Google review · 9 years ago
★★★★★
Recently had a valuable storage piece refinished by Olek for an important client. They did an absolutely stunning job and returned the piece to its original glory. In conversation with them now to do another restoration job for the same client. HIGHLY RECOMMENDED.
Jessica Gething Google review · 9 years ago

★★★★★ 5.0 average on Google · 100 reviews Read all reviews →

Stained Glass Restoration FAQ.

Can cracked stained glass be repaired?

Yes. Hairline cracks can often be stabilised with edge-gluing or copper foil reinforcement. If a piece is shattered beyond repair, we fabricate a replacement matched in colour, texture, and opacity to the surrounding original glass.

How long does stained glass restoration take?

Timelines vary by scope. A single residential panel may take 2–4 weeks; a full ecclesiastical window programme can span several months. We provide a detailed timeline during the assessment phase and keep you updated throughout.

What is protective glazing?

Protective glazing is an exterior layer of clear glass or polycarbonate installed over the original stained glass. It shields against weather, vandalism, and UV damage. Vented systems allow air circulation to prevent condensation buildup.

Do you work on both leaded and copper foil stained glass?

Yes. We restore both traditional lead came (H-channel) stained glass and copper foil (Tiffany-style) pieces. Each technique requires different restoration methods, and our artisans are experienced in both.

Can painted details on stained glass be restored?

Yes. Kiln-fired painted glass can be stabilised and, where necessary, repainted and re-fired to match the original technique. We document all painted details before intervention to ensure accuracy.

Custom leaded glass window with green borders and inset natural geode slices

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