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 Figure 12. — Removing strippable plastic from sealed fire door. 



Strippable or Permanent 



Plastic coating, when sprayed without an adhesive base, is strippable and does 

 not adhere permanently to the surface on which it is applied. This is demon- 

 strated in figure 12, showing the removal of the coating from a sealed door. 



When sprayed into cracks and small holes, plastic will remain almost indefinitely 

 and, except for shrinkage, will maintain its sealing qualities. Webbing com- 

 pound will not adhere to surfaces permanently, and unless bound with adhesive, 

 or covered with a plastic finishing coat, will not remain in position for any ex- 



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