Short answer: sometimes. Long answer: it depends on the crack type, where it is, and what the glass is doing. Here's a plain-English guide from our Sydney glaziers.
Identifying the type of crack tells you whether repair is feasible. Here's the four most common.
Thin, single-line cracks usually caused by minor stress or thermal change. Cosmetic if shallow, structural if they extend across the pane.
Originate at the edge of the pane and travel inward. Caused by sudden temperature change - direct sun on cold glass, or hot air on iced glass.
Radiate outward from a point of contact (a stone chip, a knock). Often have a visible "bullseye" at the impact point.
Form at the perimeter, often where the glass meets the frame. Indicate frame pressure or seal failure on double-glazed units.
A small subset of cracks are genuinely repairable. The rest need replacement. Here's the call.
These cracks can sometimes be filled with a clear repair resin. Cosmetic crack remains visible.
Anything safety-critical or structurally compromised must be replaced - full stop.
These work for very small, non-structural cracks only. For anything safety-critical, please call a glazier.
For small impact cracks under 25mm in single-pane non-tempered glass.
Available at hardware stores. The resin fills the crack and bonds with capillary action. Cosmetic appearance of the crack remains visible.
Temporary fix for hairline cracks only.
A quick, very temporary measure to stop a crack from spreading. Not a permanent solution.
Stop-gap for tiny chips that have not propagated yet.
Very small repairs only. The cured glue is brittle and visible. Not for anything safety-critical.
To prevent crack propagation while you wait for a glazier.
Strong clear packing tape across both faces of a single-pane crack will slow the propagation. Not a repair – but it buys time.
A delayed repair gets more expensive over time. Here's why.
Glass cracks propagate. A small crack today is a shattered pane in a week - especially with thermal cycling on west-facing facades.
A cracked pane has dramatically reduced load-bearing capacity. Risk of further breakage or full failure under wind or impact.
On double-glazed units, a crack means the seal is gone. Argon escapes, condensation forms, thermal performance is lost.
Even hairline cracks let water through during driving rain. Hidden leaks rot frames and damage walls.
Cracked external glass is a known weak point. A would-be intruder spots it from the street.
A small crack is a sub-$200 fix. A shattered pane in a multi-pane window is $800+. Wait long enough and you're replacing the unit.
A cracked window screams "deferred maintenance". It hits resale value and curb appeal disproportionately.
Most cracked windows need replacement. Repair is only a viable option for small, non-structural impact cracks in single-pane non-tempered glass. Anything in a door, balustrade, low window, shower screen, or sealed unit must be replaced under AS1288.
A standard residential single-pane replacement is typically $250–$600 supplied and installed. Toughened or laminated safety glass is $400–$1,200. Sealed double-glazed unit replacement is $600–$1,800. We’ll quote in writing before any work starts.
Most home and commercial insurance policies cover accidental glass breakage. We coordinate directly with your insurer where you’d like – quoting, documentation, and replacement.
For standard glass we’re typically next-day or 2–3 days. Toughened/laminated to spec is usually 5–7 days. We’ll secure the opening with boarding the same day so your home is weather-tight and secure in the meantime.
New glass carries the manufacturer warranty (typically 5–10 years on toughened/laminated glass against spontaneous breakage). Workmanship is warrantied 12 months. Beyond that, glass behaves like glass – impact will break it.
After-hours emergency repair on a smashed sliding door - Everclear had us secure within an hour. Lifesavers.
Google review
Best glaziers in Sydney, hands down. Fair pricing and excellent workmanship.
Google review
Replaced our shopfront after a break-in - same-day boarding, replaced overnight, no fuss. Thank you.
Google review
Repaired our bifold doors that two other companies had given up on. Smooth as new. Thanks Everclear.
Google review
After-hours emergency repair on a smashed sliding door - Everclear had us secure within an hour. Lifesavers.
Google review
Best glaziers in Sydney, hands down. Fair pricing and excellent workmanship.
Google review
Replaced our shopfront after a break-in - same-day boarding, replaced overnight, no fuss. Thank you.
Google review
Repaired our bifold doors that two other companies had given up on. Smooth as new. Thanks Everclear.
Google review
From our South Windsor base we cover Greater Sydney, Hawkesbury and the Blue Mountains. Don't see your suburb? Call us - we travel.
See our full range of high-performance aluminium windows and doors up close, including the complete Vantage and Elevate collections. Compare hardware, colours, glass and operation in person.
schedule Mon–Fri: 7am–4pm · Sat: By Appointment
