BUILDING CONSTRUCTION 



315 



F/ue/ininf- 



at the edge of an inclosed cornice is not so good as the molded 

 gutter, which is hung at the out ends of the rafters or look- 

 outs and not inclosed in any way. If this gutter overflows, 

 there is no chance for 

 the waste to find its 

 way back to the house 

 wall, down inside the 

 sheeting, and eventually 

 to damage the interior 

 finish. The roof gutter 

 is one of the poorest 

 types of gutter that 

 has been used. Down- 

 spouts from all gutters 

 should not be smaller 

 than 3 inches, and one 

 spout should not be 

 called upon to take care of more than 20 feet of eave trough. 

 Roof coverings. Shingles are packed in bundles of 250 

 each. They are of varying widths, but have the same 

 covering capacity as 250 shingles 4 inches wide. Four 

 bundles will cover 100 square feet of roof when laid 4 inches 

 to the weather. Dimension shingles are of even widths, 4 

 inches and 6 inches. They are used when a special-shaped 

 butt is desired. 



Covering Capacity of Shingles 



Fig. 258. 



Details of roof construction 

 and finish 



