Lawrence Toms, 44, from Tynewydd, Wales, was brewing the alcohol when the explosion occurred, which led to four fire engines and a water bowser being called to his home.
South Wales Police think the incident was caused by homemade alcohol – and a spokesman said: “The windows were blown out of the property and it was lucky no one in the street was injured.
“We believe the explosion was triggered by a home-brewing kit. But officers are satisfied he was making it for his own consumption and this was not a commercial operation.”
Hannah Knowles, who lives opposite, added: “His windows were blown out but luckily for me his camper van was parked outside and that shielded me from the blast.”