USG Fiberock Underlayment and Tile Backerboard - Manual (Page 4)

Wall Applications:
Maximum
stud spacing: 16" o.c.
Framing shall be designed
(based on stud properties
alone) not to exceed L/360
deflection for tile, L/240 for
surfaces that will be painted.
Maximum fastener spacing:
8" o.c. for wood and steel
framing; 6" o.c. for ceiling
applications.
–
Patching Compound
Use a high-quality patching
compound such as D
urock
Floor Patch or equivalent
approved by the resilient-
flooring manufacturer.
–
Adhesive/Mortar
Meeting ANSI A136.1: Type I
ceramic tile adhesive.
Meeting ANSI A118.1: dry-set
mortar.
Meeting ANSI A118.4: latex
portland cement mortar.
–
Grout
meeting ANSI A118.7.
–
Ceramic tile
meeting ANSI
A137.1.
–
Waterproof Membrane
If waterproofing is desired,
use D
urock ™
tile membrane
installed with D
urock ™
tile
membrane adhesive. See USG
literature piece CB492 for
D
urock
tile membrane product
information.
– Protect panels from the
elements with adequate
covering during delivery and
storage.
– Store panels flat on an even,
dry surface. Allow panels to
acclimate to temperature and
humidity at job site prior to
installation.
– Handle panels in an upright
position to prevent breakage.
Incorrect
1607002 FB-102
Correct
Incorrect
Handling
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