What's actually causing this
Window panes break from impact, stress fractures from temperature cycling, or settling of the window frame. Single-pane windows in older homes are the most common repair candidate.
What you'll need
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- Work gloves (cut-resistant) Shop →
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- Glazing compound Shop →
- Glazing points Shop →
Step-by-step fix
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1
Remove the broken glass
Wearing thick gloves, remove the largest pieces first. Score remaining shards with a glass cutter and snap them out. Dispose in a puncture-proof container.
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2
Remove old glazing compound
Use a heat gun or hair dryer to soften old glazing putty, then scrape it away with a putty knife. Remove all glazing points with pliers.
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3
Measure and order new glass
Measure the opening and subtract 1/8 inch from each dimension to allow for expansion. Take these measurements to a hardware store for cutting.
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4
Bed and set the new glass
Apply a thin layer of glazing compound in the channel as a bed. Set the glass and press it firmly. Insert glazing points every 6 inches to hold the glass in place.
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5
Apply glazing and paint
Roll glazing compound into a rope and press it against the glass at a 45-degree angle using a putty knife. Smooth it flush. Let dry 7 days before painting.
Door and window contractors in New York typically charge $100–200/hr. Window replacement averages $300–800 per window, while entry doors run $800–2,500 installed.
Permits and inspections requirements vary by New York. Check with your local building department before starting.
Brownstone facades and masonry are common. Pointing and brick repair are frequent maintenance items. Window restoration in historic buildings requires specialized craftspeople. Roof access on multi-unit buildings is shared; repairs need landlord/board coordination.
Freeze-thaw cycles in New York stress window seals, weatherstripping, and door frames. Check for drafts annually and replace worn weatherstripping before winter.
DIY in New York: NYC's building code and co-op/condo board requirements make DIY repairs more restricted than most metros. Simple fixture swaps are generally fine, but anything touching plumbing lines, electrical, or structural elements typically requires licensed professionals and permits.
- The window is double-pane (foggy between panes means the seal is gone).
- The glass is tempered, laminated, or has embedded wires.
- The window frame is rotted — the glass replacement won't hold.
- The window is larger than 3 square feet — large glass is difficult to transport and install safely.
Let Uncle AI diagnose it first.
Describe the problem. Uncle AI asks the right questions and tells you exactly what's broken — and whether you should fix it yourself or call someone in New York.
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