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// CODE SNIPPET

R702.4.2 Backer Boards

Residential Code 2015 of Utah > 7 Wall Covering > R702 INTERIOR COVERING > R702.4 Ceramic Tile > 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.

TABLE R702.4.2 BACKER BOARD MATERIALS

MATERIAL STANDARD
Glass mat gypsum backing panel ASTM C1178
Fiber-reinforced gypsum panels ASTM C1278
Nonasbestos fiber-cement backer
board
ASTM C1288
or ISO 8336, Category C
Nonasbestos fiber mat reinforced
cementitious backer units
ASTM C1325
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