A method for splicing two sheets of material is provided, including: providing a processing line including a splicing head and a quality sensor located between upstream and downstream ends of the processing line; providing first and second sheets of material; processing the first sheet on the processing line along a processing direction from the upstream end towards the downstream end; detecting, by the quality sensor, a value of a quality parameter at a detected portion of the first sheet; and, when the value falls within a predetermined threshold, transporting the first sheet along the processing line such that the detected portion is located prior to getting into the splicing head from the upstream end, and splicing the first and the second sheets at the splicing head when the detected portion is located prior to getting into the splicing head from the upstream end.