// CODE SNIPPET
R702.4.2 Backer Boards
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Materials used as backers for wall tile in tub and shower areas and wall panels in shower areas shall be of materials listed in Table R702.4.2, and installed in accordance with the manufacturer's recommendations.
|Glass mat gypsum backing panel||ASTM C1178|
|Fiber-reinforced gypsum panels||ASTM C1278|
|Nonasbestos fiber-cement backer |
or ISO 8336, Category C
|Nonasbestos fiber mat-reinforced|
cementitious backer units
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