: Use verge pieces to shield edges from rain penetration and debris .
Since "Bitumen" is the most useful and likely correction, here is a detailed, good text about : bithumen
In the context of roofing and construction, a "full piece" of bitumen typically refers to a standard, uncut unit of the material used to cover or finish a roof. Depending on the specific system you are using, this can mean a of corrugated roofing or a specialized accessory piece like a ridge or verge. Standard Full Pieces for Roofing : Use verge pieces to shield edges from