A: From a few weeks to several months, but expect fogging between the panes almost immediately after the seal is broken. 10. Conclusion A crack in a double glazed window is more than an eyesore – it’s a functional failure that undermines energy efficiency, comfort, and safety. While temporary fixes like tape or film can provide a short-term stopgap, the only reliable, long-term solution is professional replacement of the insulated glass unit. Prompt action will prevent further damage, reduce energy bills, and restore your window’s performance.

A: It depends. Most policies cover “sudden and accidental” damage (e.g., a baseball). They typically do not cover thermal stress or gradual wear and tear. Check your deductible – it may be higher than the repair cost.

A: Possibly. Temperature changes, wind pressure, and even cleaning the window can cause the crack to propagate.