304 



FOREST PRODUCTS 



The following table shows the average selling price per thousand 

 pieces of southern white cedar shingles for the past five years. The two 

 grades quoted represent approximately 93 per cent of all southern white 

 cedar shingles manufactured. 



THE LAYING OF SHINGLES 



Shingles are used for both roofing and siding and in certain architec- 

 tural designs lend a very attractive appearance to the structure. Stained 

 shingles are especially coming into favor for siding either all or part of 

 the building. 



The placing of shingles does not always receive the attention commen- 

 surate with the cost of the work and the length of service expected. 

 Improper nailing or carelessly laid joints often result in leakage. Shin- 

 gles which are 6 in. wide (or wider) should have 3 or more nails. Those 

 from 3 to 6 in. in width should be fastened with 2 to 3 nails. 



The kind or form of shingle nails has a direct bearing on the length of 

 Jife of any shingle. Those made of zinc, copper, or galvanized wire are 

 much preferred to cut iron or wire shingle nails. 



The pitch of a roof also has a direct bearing on the life of the shingle. 

 Those on nearly flat roofs deteriorate much more quickly than those on 

 steep roofs or those used for siding. 



The following table shows the covering capacities of shingles and 

 shakes when laid at varying exposures to the weather. It is based on 

 4 in. as the average width of shingles and 5 in. as the average width of 

 ^hakes. 



COVERING CAPACITIES OF SHINGLES AND SHAKES 



