Cyclopedia of architecture, carpentry, and building : a general reference work (1912)
American Technical Society · Chicago : American Technical Society · leaf 184
s.^\ here slates are cut, as against hips or valleys, care shoidd be takenthat each slate receives two nails. For thick slates the holes should bedrilled and countersunk. For first-class work the slates, for a dis-tance of two feet each side of valleys and above gutters, should be ren-dered, i.e.,… … 146 BUILDING SUPERINTENDENCE 137 Flashings. Valleys in slate roofs should be open valleys ofnu tal at least eighteen inches wide, often laid, like a tin roof, with theend joints locked and soldered and the edges securely nailed to theroof boarding. Tin, zinc,or copper maybe used, but copper is to…
Architecture · Building
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