Layered brickwork vaults—known as bóvedas de ladrillo por hojas, among other names—are those in which bricks are laid vertically or at a slight angle, forming arched courses that require no formwork, as the bricks adhere to the previous course through the mortar. Although their geographic and chronological range is wide and there is a great variety of resultant forms, here we consider details of execution and application common to them all and analyze bricklaying techniques and possible arrangements of courses according to written sources and current experience. Our conclusions confirm the possibility of establishing general criteria allowing the use of such vaults to be recovered and applied in new construction.