Roll-and-Cap Roofing

Roll-and-cap roofing, or standing-seam roofing with cap, is shown in Figs. 30 and 31. In these figures the same reference letters are used for the corresponding parts. This roofing differs from the standing seam roofings already described in that the turned-up edges a of the sheets "b", "c", and "d" are not locked together, and are of the same height.

The sheets of roofing are held down by cleats "e", and the flanges are covered with a special cap "f" which covers the openings between the flanges, and forms a satisfactory seam. In starting the roof at the eaves and gables the edges of the roofing are bent down and nailed, as at "g", Fig. 30.