WALL CONSTRUCTION 



123 



felt building paper may be inserted between the two floors, which 

 will add greatly to the warmth of the building. 



The framework is constructed mainly from 2 by 4 inch lumber, 

 as are the rafters of buildings less than fourteen feet in width. 

 The walls may consist of one thickness of matched boards covered 

 with I -ply smooth-surfaced patent roofing, similar to the roof 

 covering, novelty siding, weather boards, or rough sheathing 

 shingled. Or, as is the custom in extremely cold climates, the 

 walls may be made double, with a dead air space between, or 



Fig. 85. — End view of model hen house; as shown in Fig. 82. 



filled in with straw, hay or shavings for insulating purposes. 

 These precautions, however, are not necessary unless the temper- 

 ature goes below zero for long periods at a time. 



Another practice is to ceil the inside edge of the studding in 

 way of the roosting compartments, and also the under side of the 

 rafters. This makes a very neat interior, and helps to carry off 

 any foul odors from the perches. Some poultrymen advocate the 

 use of felt or tar paper on the inside of laying houses, lining the walls 

 with it ; but in the writer's experience this is very unsatisfactory. 



