Sheet metals and sheet metal products : no 292 . valleys. Shape the metal to the angle of the valley by formingit over a straight edge. Tong back one inch along each side of the valley; place it in positionand fasten with cleats. Into the lock of the valley hook the roofing sheets from above, mallet the joints closelyand putty them well with elastic roofing cement. Tin gutters are preferable, because the contraction caused by cold weather, acting onlonger strips of metal opens the seams, which, being fewer in number, must bear an increasedstrain. Keep the back or lock of the gutter higher than
Sheet metals and sheet metal products : no 292 . valleys. Shape the metal to the angle of the valley by formingit over a straight edge. Tong back one inch along each side of the valley; place it in positionand fasten with cleats. Into the lock of the valley hook the roofing sheets from above, mallet the joints closelyand putty them well with elastic roofing cement. Tin gutters are preferable, because the contraction caused by cold weather, acting onlonger strips of metal opens the seams, which, being fewer in number, must bear an increasedstrain. Keep the back or lock of the gutter higher than the eaves. Directions for Applying Roll and Cap Roofingwith Outside Cleats Directions for applying roll and cap roofing with outside cleats are the same as forRoll and Cap Roofing with Protected Cleats, except the cleating and capping, which isclearly illustrated in cut. The cleat is bent down over the standing seam, the cap is then placed over the seamand cleat, then turn the cleat back over the cap and tighten the seam with squeezing Showing Application of Roll and Cap Roofing with Outside Cleats For Laying Roll and Cap Roofings on Flat Roofs- Where the pitch or fall is less than one inch to the foot, lap the iron, and before puttingon the caps, open the seam about J4 of an inch, and fill it with a first-class roofing cement;put on the cap and close with the squeezing tongs. This process makes the roof secure against leakage when snow, ice, or water standsupon it; but it is not necessary where the pitch is one inch or greater to the foot. One ply red rosin sized sheathing should be laid under the metal to prevent sweatingand dripping from condensation in cold weather if gas or steam is used in the building, orwhere there is heat next to the roof. 28 WHEELING CORRUGATI7VG CO., WHEELING, W. VA, Plain Ridge Roll Painted or GalvanizedCan be furnished in IX Terne or Copper when ordered.
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