Cracked Window Pane
A crack running through a window pane, which may be from an impact or have appeared without obvious cause.
What Is Causing This?
- 1Impact from a ball, stone, or debris
- 2Thermal stress from rapid temperature change
- 3Settlement causing the frame to flex and stress the glass
How Urgent Is This?
This should be fixed in the coming weeks. Leaving it may allow the problem to worsen and cost more to repair.
What Needs to Be Done
A window fitter will measure and order a replacement sealed unit, then swap the cracked glass for new. Single-glazed panes can often be replaced the same day.
How Much Will It Cost?
National average estimate
Labour: £173 – £425 | Materials: £663 – £2,200
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Prices are estimates based on typical UK rates. Actual costs depend on the specific issue, accessibility, and your location. All quotes from tradespeople on Tradesfolk are completely free.
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Ask a QuestionHow to Prevent This
Fit toughened or laminated glass in vulnerable positions. Avoid directing heaters at cold windows. Address frame movement before it cracks the glass.
Related Problems
Other Window Fitter Problems
Misting or fogging between the two panes of a double-glazed unit, which cannot be wiped away.
A window that will not shut fully, leaving a gap, or that requires excessive force to close and lock.
Cold air blowing in around a closed and locked window, making the room feel cold near the window.
A window handle that has snapped, come loose, or no longer engages the locking mechanism.