FARM STRUCTURES 



427 



Front elevation of the house 

 shown in Fig. 270. 



the heaving action of the frost. Masonry foundations are 

 to be preferred on account of their greater durability. 



Walls. Any wall construction will be satisfactory so 

 long as it will prevent 

 drafts, retain the heat, 

 prevent the condensation 

 of moisture, and furnish a 

 smooth surface which may 

 be entirely freed from mites 

 and other vermin. The 

 following wall construc- 

 tions are generally used: 



1. Walls made of a 

 single thickness of boards, 

 matched or battened. 

 Usually this construction 



is too cold for anything except southern climates. Building 

 paper may be used on the inside of the boards to make the 

 walls air-tight. 



2. Double wall, same as above, except ceiled on the 

 inside. For general use this construction is fairly warm but 

 gives trouble from condensation of moisture. 



3. Same wall as No. 2, but the space between the outside 

 and inside boards is filled with hay or other insulating mate- 

 rial. This is a very warm wall and gives little trouble from 

 condensation. 



4. Same as No. 3, except the inside sheeting is replaced 

 with lath and hard plaster. The latter gives a finish which 

 may be thoroughly disinfected when desired. 



5. Masonry walls of concrete or clay building blocks. 

 Concrete makes a good wall for a poultry house if made 

 double. 



