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  Frequently Asked Questions
  Callers to our 1-800-NATIONAL® Technical Assistance Hotline frequently ask the following questions about PermaBase, Gypsum Board, Mold Related Products, Veneer Plaster, and Gypsum Wallboard systems:
  Hi-Abuse XP and Hi-Impact XP
PermaBase Cement Board
Gypsum Board
Veneer Plaster
Gypsum Board Systems
 
     

 

   
 
     
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