Construction of Side Walls 107 



such a manner that the whole surface is thoroughly 

 covere,d, providing for a liberal lap wherever the 

 edges meet. The object of this tarred building- 

 paper is to prevent drafts of air from penetrating 

 the side walls. (See Fig. 35.) The boards of the 

 outside covering should be put over the building- 

 paper in such a way that they will break joints 

 with the inner boarding. If boards of a uniform 

 width can be selected for this purpose, the ease of 

 breaking joints will be greatly increased. A wall 

 of this thickness of inch boards, with building 

 paper, constructed as previously described, will 

 prove satisfactory under ordinary conditions. It 

 should be remembered, however, that these walls 

 will be covered somewhat with frost in severe 

 weather, particularly if the houses are well filled 

 with fowls. 



A hollow wall may be constructed at about the 

 same expense as the solid wall just described. One 

 method of constructing a cheap and efficient poul- 

 try house having hollow side walls is shown in 

 Fig. 36. The sill may be of 2 x 8 or 2 x 6 scantling, 

 laid flat on the foundation wall. A 2 x 2 scantling 

 or strip is nailed on top of the sill, at its outer edge. 

 This gives the width of the space or hollow in the 

 side walls. The plate may be constructed of a 2 x 3 

 or 2x4 scantling, placed edgewise. The boards 

 which constitute the side walls are nailed to the 

 sides of the plate and to the sides of the strip which 



