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Other Forms of Metal Roofing

fig, slate and roof

OTHER FORMS OF METAL ROOFING There is another form of roofing known as metal slates and shin gles, pressed in various geometrical designs with water-tight lock attach ments so that no solder is required in laying the roof. Fig. 189 shows the general shape of these metal shingles which are made from tin, galvanized iron, and copper, the dots a a a a representing the holes for nailing to the wood sheathing. In Fig. 190, A represents the side lock, showing the first operation in laying the metal slate or shingle on a roof, a representing the nail. B, in the same figure, shows the metal slate or shingle in position cover ing the nail b, the valley c of the bottom slate allowing the water, if any, to flow over the next lower slate as in A in Fig. 189.

In Fig. 191 is shown the bottom slate A covered by the top slate B, the ridges a a a keeping the water from backing up. Fig. 192 shows the style of roof on which these shingles are employed, that is, on steep roofs. Note the con struction of the ridge roll, A and B in Fig. 192, which is first nailed in position at a a etc., after which the shingles B are slipped under the lock c. Fig. 193 shows a roll hip covering which is laid from the top downward, the lower end of the hip having a projection piece for nailing at a, over which the top end of the next piece is inserted, thus covering and concealing the nails. Fig. 194 represents a perspective

view of a valley with metal slates, showing how the slates A are locked to the fold in the valley B. There are many other forms of metal shingles, but the shapes shown herewith are known as the Cortright patents.

Fig. 195 shows the various hand tools required by the metal roof er; starting at the left we have the soldering copper, mallet, scraper, stretch-awl, shears, hammer, and dividers. In addition to these hand tools a notching machine is required for cutting off the corners of the sheets, and roofing folders are r quired for edging the sheets in seam roofing, and hand double seamer and roofing tongs for standing-seam roofing. The roofing double seamer and squeezing tongs can be used for standing-seam roofing (in place of the band double seamer), which allow the operator to stand in an upright position if the roof is not too steep.