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=Like Our Shingles=, has a nailing flange the entire length of each
sheet. =It forms a Continuous Rib= when applied from eaves to comb
with cross seams twenty-five inches apart, which gives it strength and
rigidity not found in roofing where longer sheets are used. =It has no
protruding= anchors, cleats or rivets; all nail heads are covered as
perfectly as those used for wood shingles. =There is no waste= in using,
either at comb or eaves. =The Side Nailing Flange= admits of the roof
being fastened to roof boards with any required degree of strength. =The
Cross Seams= are formed with a folded lock which allows for contraction
and expansion. =Material.=—Each sheet of this roofing is made from Best
Roofing Tin, or Imported Siemen’s Sheet Steel, which is hard rolled,
tough, durable and =thoroughly coated= on both sides with the best
Oxide of Iron and Linseed Oil Paint. The size of sheets are 20 × 28
inches. =Tools.=—We send with each order one pair of _Metal Shears_, one
_Mallet_, and a _Draw Tool_, for which we make a charge of two dollars.
These tools can be returned to us by express at our expense, and the
purchaser credited, or the money paid for them returned. =Important
Improvements= in the manufacture of Steel Sheets enable us to put this
on the market at the same price as Sheet Iron Roofing, to which it is
greatly superior. =The Rib is formed= of the Walter’s Patent Lock, and is
the same we have used on our shingles for the last seven years. This Lock
has been thoroughly tested, and it is significant that over 25,000,000
square feet of shingles constructed upon this plan are already in use
in the United States and Canada. The application of this Lock does away
with a very large proportion of the work necessary in laying standing
seam roofs as ordinarily applied, such as tonging up the seams, double
seaming, capping or riveting the ribs, and making and using cleats or
other fastenings. This roofing costs no more than wood shingles in
sections where good timber is scarce. Each sheet is made from plates 20 ×
28 inches. =WRITE FOR PRICES.=
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The National Sheet Metal Roofing Co., 510-520 E. 20th St., N. Y. City.