cement board vapor barrier ?


  #1  
Old 10-06-04, 09:46 AM
stilllearning6
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Question cement board vapor barrier ?

Is cement board considered a vapor barrier for an exterior wall ?

Redo of 1920's house --

In the tub / shower surround area , added paper backed R- 13 insulation , then several nailer boards , then cement board . Plan to add tile to cement board .

Will I have moisture issues ? What is the proper vapor barrier to add to the inside of an exterior wall ?

In the bath exterior wall which is not part of the tub surround , I plan to install green board . Is that a vapor barrier ?
 
  #2  
Old 10-06-04, 12:05 PM
slumlordfrank's Avatar
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I usually just use 15# saturated felt (roofing) paper, AKA tar paper.

Frank
 
 

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