Installation Guide

5
Countertop
Installation
1/4 in. (6 mm), 1/2 in.
(12.7 mm), 5/8 in.
(16 mm)
Cover plywood base with
USG Durock™ Brand Tile
Membrane, 15 lb. (6.8 kg) felt
or 4-mil polyethylene and
attach with 1/4 in. (6 mm)
galvanized staple.
POSITION
Fit ends and edges of panels
closely but not forced
together. Stagger panel joints
from plywood base joints.
FASTEN
Space fasteners 8 in.
(203 mm) o.c. around the
perimeter and in the fi eld
of the board.
JOINING
Fill joints with latex-fortifi ed
mortar or Type 1 organic
adhesive and immediately
embed alkali-resistant,
fi berglass mesh joint tape.
FINISH
Install tile.
Note: Because cement board
fasteners may protrude through
the plywood base when 1/4 in.
(6 mm) cement board is used,
1/2 in. (12.7 mm) or 5/8 in. (16 mm)
cement board is preferred in this
application.
Wall & Ceiling
Installation
1/2 in. (12.7 mm) &
5/8 in. (16 mm) only
FASTENING
Fasten to studs spaced
16 in. (406 mm) o.c. Space
fasteners 8 in. (203 mm)
o.c. for walls, 6 in. (152 mm)
o.c. for ceilings. Fit ends and
edges of panels closely but
not forced together.
• Wood framing: 1-1/2 in.
(38 mm) hot-dipped
galvanized roofi ng nails
or 1-1/4 in. (32 mm). USG
Durock™ Brand Tile Backer
Screws for wood framing
or equivalent.
• Steel framing: 1-1/4 in.
(32 mm) USG Durock™
Brand Tile Backer Screws
for steel framing or
equivalent.
JOINING
Fill joints with latex-fortifi ed
mortar or Type 1 organic
adhesive and immediately
embed alkali-resistant,
fi berglass mesh joint tape.
SHIM
Place a 1/4 in. (6 mm) spacer
strip or shim around lip of
bathtub or shower pan to
hold bottom edge of panel
o  t h e fi x t u r e .
FINISH
Install tile.
See SA932EG for fi nishing
recommendations to nontiled
cement board.