Judge Ford Stinson could sentence Charles Wynne, Jr. to up to 30 years on the meth charge and 15 years on the arson charge.
Bossier-Webster District Attorney Schuyler Marvin said Wynne was arrested when Webster Parish Sheriff's deputies and the Springhill Fire District were notified of a fire at Wynne's Springhill residence in November 2010.
"Wynne was badly burned during the fire and explosion and claimed he started the fire for warmth," Marvin said.
However, investigators reportedly determined the propane tank used by Wynne did not contain propane, but instead was filled with anhydrous ammonia, a chemical necessary for manufacturing methamphetamine.
"According to testifying investigators, anhydrous ammonia is used for farming, and Wynne was definitely not a farmer," Marvin said. "The fire completely destroyed the house."
The trial, which began Monday, ended around noon Wednesday. Wynne will be sentenced September 26.
"Meth is a serious addictive drug, and our office will prosecute to the fullest extent," said Assistant District Attorney Jack Montgomery. "It harms people of all ages, and the manufacturing of it is very dangerous, as Mr. Wynne now knows."