Doors 



The sealing of a roll-down steel fire door presents a serious problem when work 

 is to be accomplished with the use of mineral asphalt and paper. When plastic 

 is used, however, the operation is gready simplified. In figure 13 on page 21 

 webbing is being applied to a door of this type. It is to be noted that the wide 

 cracks around the perimeter of the door are being webbed, following the applica- 

 tion of binding agent. In figure 20, a section of the completely sealed door is 

 shown. Sealing with plastic does not affect the operation of the door in the 



PMA 1 7502 



Figure 19. — Combined application of plastic compound and sisal- 

 kraft paper to screened door. Note: This temporary seal is 

 easily removed after fumigation. 



event that it must be opened and in most instances, after reclosing, it is only neces- 

 sary to repair the injury around the perimeter. 



On wooden doors where a considerable number of cracks are to be sealed it 

 may be found more expedient to seal the entire surface with plastic. In this case, 

 binding agent would be used only on the edge, with a strip or two applied on the 

 surface of the door to keep the material from loosening or flapping. 



Eaves, Flashings, and Skylights 



Eave areas of buildings can be readily and economically sealed with plastic 

 it .1 considerable saving in both labor and material as compared with methods 



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