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        Durock_-taping_and_where_it_meets_the_greenboard_in_shower _-_Ask_... 
       
      
    
    
    
                  
        I've used Durock on my shower walls and taped the vertical joints with fibreglass tape. I've used moisture and mold resistant sheetrock for the ceiling. What do I use to seal the horizontal seams where Durock meets sheetrock?
     
     
    
    
    
    
    
    
  
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