CertainTeed 2509_Diamondback - Manual (Page 2)

Product Fastener Fastener Size / Type
Diamondback ® Tile
Backer 1/4" (6.4 mm)
Screws 1-1/4" (32 mm) corrosion-resistant, backerboard screws with coarse threads
Nails Hot dip 7/16" (11 mm) head, galvanized roofing nail, 1-1/4" (32 mm) minimum length.
Diamondback ® Tile
Backer 1/2" (12.7 mm)
Screws 1-1/2" (38 mm) corrosion-resistant, backerboard screws with coarse threads
Nails Hot dip 7/16" (11 mm) head, galvanized roofing nail, 1-1/2" (38 mm) minimum length
• 1/2" or 5/8" Diamondback Tile Backer Type X for walls
and ceilings
• 1/4" or 1/2" Diamondback Tile Backer for floors or countertops
• Nominal 2" (50 mm) wide alkali-resistant mesh tape
• Flexible sealant
• No additional moisture barrier needed
• Tile adhesive (latex-modified thinset meeting ANSI A118.4)
• Metal studs – minimu m 20 gauge
• Minimum recommended stud depth:
wood – 3-1/2" (89 mm); steel – 3-5/8" (92 mm)
Recommended Materials
Shower Receptors
Before installing Diamondback ® Tile Backer on walls (see
Diagram 3), the shower pan or rubber membrane must be
adequately sloped to the main drain or weep-hole so as not
to impede proper water drainage.
Install Diamondback Tile Backer on walls in accordance with
instructions in Diagram 1.
For showers with curbs, a waterproof membrane must be
applied up walls for a minimum of 3" (75 mm) and a maximum
of 6" (150 mm) above the finished curb. Diamondback Tile
Backer should not be used in the curb.
For showers without curbs, a waterproof membrane should be
applied up walls for a minimum of 6" (150 mm) and a maximum
of 8" (200 mm). Satisfactory blocking should be applied at the
bottom framing (e.g., wood).
Special notes: Do not place Diamondback Tile Backer into the
shower mortar bed. Leave a maximum 1/4" (6 mm) gap and fill
with flexible sealant.
INSTALLATION GuIDe FOR DIAMONDBACK ® TILe BACKeR FASTeNING PATTeRNS
Fastening patterns and other detailed information for recommended installation and application of Coated Glass Mat Water Resistant Gypsum Backer
Board (ASTM C 1178) can be found below and in the Tile Council of North America, Inc.’s TCNA Handbook for Ceramic, Glass, and Stone Tile Installation .
Recommendations for Fasteners – Wood or Metal Framing for Walls & Ceilings
Spacing for all fastener types to be 6" (150 mm) o.c. along framing
Bathtub or Shower Receptor
Install Diamondback ® Tile Backer on walls in accordance with
instructions in Diagram 1.
Diamondback Tile Backer may be applied on walls
horizontally or vertically. Thoroughly filling the space between
the tile and tub with a flexible sealant will help prevent
water penetration.
Shower Pan
Adequately slope shower pan or rubber membrane to the
open drain or weep hole, permitting proper drainage. Do not
use Diamondback Tile Backer in the shower pan or as a
shower base.
1/2" (12.7 mm) or 5/8" (15.9 mm)
Diamondback ® Tile Backer
Sloped mortar bed
Flexible sealant into max.
1/4" (6 mm) gap
Tiles
Tile adhesive (latex-modified
thinset meeting ANSI A118.4)
Sloped rubber membrane
Diagram 3
Diamondback ® Tile Backer
5/8" (15.9 mm) Type X
Screws 1-5/8" (41 mm) corrosion-resistant, backerboard screws with coarse threads
Nails Hot dip 7/16" (11 mm) head, galvanized roofing nail, 1-3/4" (44 mm) minimum length
1/2" (12.7 mm) or 5/8" (15.9 mm)
Diamondback ® Tile Backer
Tiles
Tile adhesive (latex-modified
thinset meeting ANSI A118.4)
Flexible sealant into max.
1/4" (6 mm) gap
Diagram 5
Diagram 4
1/2" (12.7 mm) or 5/8" (15.9 mm)
Diamondback ® Tile Backer
Tile adhesive (latex-modified
thinset meeting ANSI A118.4)
Tiles
Flexible sealant into max.
1/4" (6 mm) gap
Shower Pan
Fastener
Bathtub
Fireproofing when required
Wood or metal studs
subfloor joints and butted tightly. Fasten the Diamondback Tile
Backer to the subfloor with 1-1/4" (32 mm) corrosion-resistant
screws beginning in the center of each board and working
toward the edges. Space fasteners a maximum 8" (200 mm) o.c.
in both directions, driving them flush with the surface (Do Not
Countersink). Apply a thin coat of latex-modified thinset (ANSI
A118.4 or better) to board joints and embed 2" wide alkali-resist-
ant fiberglass mesh tape with latex-modified thinset. Apply
flooring-grade tile with latex-modified thinset (ANSI A118.4 or
better) using a 1/4" x 1/4" (6.4 x 6.4 mm) square-tooth notched
trowel. Use a 2" x 2" (51 x 51 mm) or larger floor-grade tile.
Then apply floor grout (ANSI A118.6) or polymer modified grout
(ANSI A118.7) to the tile joints.
Non-Tile Walls or Ceilings
Non-Tile, Non-Wet, High-Humidity Areas
Diamondback ® Tile Backer may also be used in interior non-tile areas
that do not come in contact with water, but that experience
exposure to high levels of humidity intermittently, such as areas
outside tubs and showers in residential construction (see Diagram 2).
For walls, wood framing or steel ( 25 -gauge min.) should be
spaced no greater than 16" ( 400 mm ) o.c. for 1/ 2" (12.7 mm )
Diamondback Tile Backer and 24" ( 610 mm ) o.c. for 5/8" ( 15.9
mm ) Diamondback Tile Backer. For ceilings, Diamondback Tile
Backer should be installed perpendicular to framing with framing
spaced no greater than 12" ( 300 mm ) o.c. for 1/ 2" ( 12.7 mm )
thickness and 16" ( 400 mm ) o.c. for 5 / 8" thickness.
Apply nominal 2" ( 50 mm ) wide fiberglass mesh tape, such as
FibaTape
® Mold-X10™ Drywall Tape, over joints and angles,
embedding the tape in a setting - type joint compound, such as
CertainTeed’s mold resistant CertainTeed
® M2Tech ® 90 Setting
Compound. Using a trowel, apply a heavy skim coat to the
entire panel with the compound to create a smooth surface for
paint or wallpaper application. If necessary to create a suitably
smooth surface, apply an additional medium skim coat of all
purpose joint compound, such as CertainTeed All-Purpose or
Lite All-Purpose ready-mixed joint compounds. Before applying
paint or wallpaper, the surface should be primed for high-moisture
areas as recommended by the product’s manufacturer for
applications over setting type joint compound.
Diagram 1
Tiles
Tile adhesive
(latex-modified
thinset meeting
ANSI A118.4)
Flexible sealant
into max.
1/4" (6 mm) gap
Bathtub
1/2" (12.7 mm) or 5/8" (15.9 mm)
Diamondback ® Tile Backer
Wood or min.
20-guage
metal framing
1/4" (6.4 mm)
Diamondback ® Tile Backer
FibaTape ®
Cement
Board Tape
1/2" (12.7 mm) or 5/8" (15.9 mm)
Diamondback
® Tile Backer
Diagram 2
Primer and paint
2" (50 mm)
wide Mold-X10™
FibaTape
®
fiberglass
mesh tape
CertainTeed ® M2Tech ®
90 Setting Compound
(Skim Coat)
Bathtub and Shower
Walls, Floors or Ceilings
Walls, Floors or Ceilings
When using Diamondback ® Tile Backer as a tile substrate in
residential wall applications, panels should be installed with the
textured side facing the interior.
Diamondback Tile Backer can be scored and cut with a
standard utility knife. After cutting panels to required size,
make cutouts and then snug fit ends and edges, being certain
not to leave gaps between panels.
When used as a tile substrate for walls, minimum 20-gauge
steel or wood framing 16" (400 mm) o.c. without blocking for
1/2" (12.7 mm); or 24" (610 mm) o.c. for 5/8" (15.9 mm). Panels
can be applied horizontally or vertically.
When used as a tile substrate for ceilings, panels should be
applied perpendicular to framing. Framing should be spaced no
greater than 12" (300 mm) o.c. for 1/2" (12.7 mm) thickness or
16" (400 mm) o.c. for 5/8" (15.9 mm) thickness. For walls and
ceilings, fasteners should be spaced 6" (150 mm) o.c. on wood
and metal framing. Drive fasteners flush with coated surface
and do not countersink. Refer to fastener chart. In all corners,
prior to applying the mesh tape, apply a small bead of sealant
to the joint without spreading it over the face of Diamondback.
Using nominal 2" (50 mm) wide alkali-resistant fiberglass mesh
tape, bed tape on all joints and corners with material used to
set tiles. Apply sealant to seal fixture and plumbing penetrations
and abutments to dissimilar materials.
Residential and
Light Commercial Floors
1/4" (6.4 mm) Diamondback Tile Backer is approved for use as
an underlayment for interior residential and light commercial
floor tile applications as defined in the TCNA Handbook for
Ceramic, Glass, and Stone Tile Installation.
Install Diamondback Tile Backer over the 3/4" (19.1 mm) plywood
subfloor with the textured pattern side up using a latex-modified
thinset (ANSI A118.4 or better) liberally applied with a 1/2" x 1/2"
(12.7 x 12.7 mm) square-tooth notched trowel. The Diamondback
is embedded into the mortar while still pliant. Diamondback Tile
Backer board joints are to be staggered to not align with the
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