Firefighters are warning people not to place aerosol cans close to heat sources after a butane canister overheated and caused a shop front to blow out on London Road, Thornton Heath.
The Brigade’s fire investigators believe a butane aerosol canister ruptured after being left too close to a fan heater.
The explosion from the can caused the windows at the front of the shop to blow out. A car parked outside the shop was also damaged.
A London Fire Brigade spokesperson said: “Any cans which contain a compressed gas should be kept clear from any heat sources, whether it be heaters or candles.
“Heaters being placed too close to flammable materials and objects cause several fires and deaths a year so it is important to follow our heater advice.”
Two members of staff and two customers self evacuated from the shop. A further two people left the flats above the shop before the arrival of the Brigade.
A man was treated at the scene by London Ambulance Service crews before being taken to hospital.
The Brigade was called at 1849 and the incident was over for firefighters at 1943. Two fire engines from Norbury fire station attended the scene.