12:05am in Curlewis: a Door That Shattered With Nobody Near It
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At 12:05am on a Monday morning, a Curlewis resident called after their toughened glass door spontaneously shattered.
Nothing hit it. It failed on its own, in the middle of the night, in an occupied house.
Nickel sulphide inclusion
This failure type is usually caused by nickel sulphide inclusion, a microscopic defect trapped in the glass during manufacture. It can expand slowly over years, and when it finally goes it releases the permanent tension holding toughened glass together, all at once.
There is no warning, no impact, and nothing the homeowner did. It is also why it so often happens at night, when temperature change through the day has been working on the panel.
On site within the hour, at that hour
Our glaziers arrived within the hour despite the time and installed a solid timber board over the opening, protecting the house from the weather and making it safe for the occupants to go back to bed.
That is the realistic goal on a midnight callout. Nobody is manufacturing a door panel at 1am; the job is to remove the danger and close the building properly.
Back the same day
We returned later that same day to complete the full replacement in laminated safety glass.
Laminated is the right specification for a residential door precisely because of what happened here. Its bonded interlayer holds the glass together if it is damaged, and it is not subject to spontaneous failure, so the household is not exposed to a repeat of the same 12:05am phone call.
The job in short
- Site: Residential, Curlewis
- Call received: 12:05am, Monday
- Failure: Toughened door shattered spontaneously, no impact
- Likely cause: Nickel sulphide inclusion
- Overnight: On site within the hour, solid timber board-up
- Same day: Full replacement in laminated safety glass
