The jar had been used to collect a young girl’s loom bands, the London fire brigade said.
Sunlight shining through a jar of Nutella caused a devastating house fire in southwest London and killed a family's pet dog
The blaze, in Twickenham, started on Sunday after the glass jar, which was placed on a windowsill, refracted low sunlight and caused a set of blinds to catch fire, the London fire brigade said.
London Fire Brigade
The resulting fire destroyed a first-floor bedroom and damaged the roof of the property, which lies on Fielding Avenue.
Electrical supervisor Declan Murphy, who lived in the house, and his family were not home at the time of the fire, but their pet dog, a Jack Russell called Chili, was trapped in the property and died of smoke inhalation.
Murphy told Get West London : "We're all heartbroken at Chili's death and we've been told it will be up to a year before the house is ready for us to move back into.
"I want to ensure other people are aware of the dangers and know to keep glass items away from windows and out of direct sunlight so they don't have to go through anything like this."
London Fire Brigade
Murphy had been out celebrating the anniversary of his engagement with his wife and two children, aged 7 and 3.
Commenting on the fire, Charlie Pugsley, from the brigade's fire investigation unit, said: “It sounds far-fetched that a jar containing a few rubber bands caused a severe house fire but that’s exactly what happened.
“It’s worth spending five minutes checking that your window ledges are clear of any glass or crystal that might lead to a potentially life-changing blaze.”
London Fire Brigade
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