Church Stained Glass Restoration in Fort Collins: Our Conservation Approach

Stained glass has defined sacred spaces for centuries. In Fort Collins, congregations at historic houses of worship — from the century-old stone walls of Saint Joseph’s Catholic Church to the brilliantly lit sanctuary of First Presbyterian Church — have worshipped beneath windows that tell their community’s story in color and light. When those windows begin to show their age, the question isn’t whether to act, but how to act with the care that these irreplaceable works of art deserve.

At Fort Collins Stained Glass, we approach every church restoration project as a stewardship responsibility. We’re not simply replacing broken glass; we’re preserving a congregation’s visual heritage for the generations who will worship in that space long after us.

Why Church Windows Need Specialized Restoration

Fort Collins sits at over 5,000 feet elevation, and that altitude creates conditions that are particularly demanding for historic stained glass. Colorado’s intense high-altitude UV exposure, combined with the region’s pronounced freeze-thaw cycles, accelerates the aging process that affects every panel — whether a window is 30 years old or 130. Lead came becomes brittle and weak. Putty dries out and crumbles, allowing water infiltration. Individual pieces of glass crack under thermal stress, and entire panels can bow or sag outward as their internal structure fails.

Left unaddressed, these structural issues compound quickly. What begins as a hairline crack in a single pane can become a sagging panel that allows moisture inside, which in turn accelerates corrosion of the lead matrix. The result is a cycle of accelerating deterioration that makes early intervention both the most preservation-conscious and the most cost-effective choice.

Religious stained glass is also uniquely irreplaceable. The original glass colors, textures, and hand-painted details in a historic church window often cannot be perfectly replicated today. Our approach prioritizes preserving original glass wherever possible — removing, cleaning, and re-leading original pieces rather than substituting new materials.

Our Conservation Process, Step by Step

Before we lift a single panel, we document everything. Every window is photographed in detail so we have a complete visual record of the original design, color palette, and painted detail. This documentation serves as our restoration roadmap — and it becomes part of the church’s permanent record for future reference.

Our restoration process typically includes the following stages:

• Condition assessment: We evaluate each panel for lead came integrity, glass fractures, failing putty, bowing, and any areas of previous repair. We look at the window in context — how it’s framed, whether its supports are sound, and whether protective exterior glazing might benefit long-term preservation.
• Careful panel removal: Panels are removed with precision to avoid stress fractures. Each one is labeled and transported flat to prevent further damage during transit to our studio.
• Glass cleaning and inspection: Original glass pieces are cleaned of decades of grime and old putty. We assess each piece for stability — preserving every original element we safely can, including hand-painted details and original antique glass that carries the authentic character of the period.
• Re-leading: New lead came is carefully cut and fitted around the original glass pieces, following the original design pattern precisely. We use came profiles matched to the original to maintain visual authenticity.
• Soldering and puttying: All lead joints are soldered, and the panels are puttied to seal the glass firmly and restore structural rigidity. Putty also provides the weather seal that protects the interior of the came from moisture.
• Re-installation and support: Restored panels are re-installed into the original frames, with any necessary reinforcement to the support structure. Where existing bar supports are inadequate, we address that as part of the project so the restored panels are properly braced for decades of continued use.

The Historic Churches of Fort Collins Deserve This Level of Care

Fort Collins has a remarkably rich ecclesiastical history for a city of its size. The First United Methodist congregation dates to 1867 — just a year after the town itself was established — and First Presbyterian Church has held services here since 1872. Saint Joseph’s Catholic Church, built from stone quarried locally and from the now-submerged town of Stout beneath Horsetooth Reservoir, stands as one of the most historically layered landmarks in the region. Peace With Christ Lutheran Church features windows designed in collaboration with local artist Marge Davis, depicting Old and New Testament themes in glass that is entirely specific to this congregation’s story.

Each of these windows is a primary source document of the community that created it. When we restore them, we take seriously the obligation not to impose modern aesthetics on historic work, but to recover — as faithfully as possible — what was originally there.

The Stained Glass Association of America publishes conservation standards that guide responsible restoration practice, and our work aligns with those principles. We document before we act, preserve what can be preserved, and replace only what cannot be saved.

When Should Your Church Consider Restoration?

Many congregations aren’t sure when a window has crossed from “aging gracefully” into “actively deteriorating.” There are clear warning signs worth watching for. Sagging or bowing panels — even minor bulges — indicate that the lead matrix has weakened and that the structural integrity of the panel is compromised. Cracked or missing glass pieces, visible gaps in putty, or evidence of water staining on interior sills all warrant a professional evaluation. If a window has never been restored and is more than 60–70 years old, a condition assessment is simply good stewardship, regardless of whether visible damage is present.

Properly maintained stained glass can last 80 to 150 years or more between restorations. The investment in timely, professional conservation means that future generations will inherit these windows in the same condition that makes them meaningful today.

Contact Fort Collins Stained Glass for a Church Window Assessment

We serve congregations throughout Fort Collins, Loveland, Greeley, and communities across Northern Colorado. Whether your church windows show clear signs of distress or you simply want a professional opinion on their current condition, we’re glad to come out, evaluate what we’re looking at, and talk through your options.

Our team understands that a church restoration project involves more than technical skill — it involves sensitivity to what these windows mean to the people who gather beneath them. We bring both to every project we take on. Reach out to Fort Collins Stained Glass to schedule a consultation and take the first step toward preserving your congregation’s stained glass legacy.