Installation Instructions

Floor Application
Ceramic Tile
Underlayment or Tile
Backerboard
Panel Application
Apply Type 1 organic adhesive
with 5/32" v-notched trowel,
latex-fortified mortar with
1/4" square-notched trowel.
Comb out adhesive or
mortar in straight, parallel
rows (as shown below) and
immediately cover with panel.
Adhere panels to subfloor, one
panel at a time.
Fastening
Fasten to subfloor with 1-1/4"
USG Durock
™
tile backer
screws for wood framing (or
equivalent) or 1-1/2" hot-
dipped galvanized ring shank
roofing nails spaced 8" o.c. in
both directions with perimeter
fasteners at least 3/8" and
less than 5/8" from ends and
edges. Drive nails and screws
so that bottoms of heads are
flush with panel surface to
ensure firm panel contact with
subfloor. Do not overdrive
fasteners.
Finishing Joints
Fill joints with latex-fortified
mortar or Type 1 organic
adhesive and immediately
embed USG Durock
™
tilebacker
tape or equivalent alkali-
resistant, fiberglass mesh joint
tape.
Ceramic Tile Installation
Sweep all debris from
underlayment, and vacuum
carefully to eliminate dust and
dirt.
To set tile, apply latex-
fortified mortar or Type 1
organic adhesive with a
notched trowel. Key in mortar
or adhesive with flat side of
trowel to prime USG Fiberock
surface, then comb out
adhesive or mortar in straight
parallel rows. When combing
out adhesive or mortar, hold
trowel at an angle to maintain
uniform thickness.
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