French couple Christian, 60, and Chantal Coutelet, 58, occupants of the one storey house on Soi Khao Makok in East Pattaya, had hired contractors to repair the roof.
Welding technician and Surin native Thaam Bunsapha, 49, told police that while he was using a welding torch to cut into a steel beam in the roof, a red hot flake landed on some plastic, which quickly caught fire.
It took firefighters about an hour to fully extinguish the Oct. 18 late morning blaze.
It took firefighters about an hour to fully extinguish the roof fire in Banglamung.
