Instructions / Assembly

SILICONE CAULK IS RATED FOR
EXPANSION JOINTS IN TRAFFIC AREAS
Exceeds Shore A Hardness Requirements
TB41
CUSTOM
®
’s Commercial 100% Silicone Caulk was
developed for use as a caulk in coves, corners and changes
of plane in interior, exterior or submerged applications. With
18 popular core colors (plus clear), this new caulk also meets
the requirements for a movement joint sealant – ensuring a
seamless tile or stone installation without a change of color in
grout joints.
To ensure the longevity of large ceramic tile or stone
installation, it is important that the installation is free to move
horizontally with the subfloor. Stresses in the tile assembly can
occur from thermal expansion and contraction, shrinkage of the
curing concrete, or the flexing of suspended floors due to traffic.
These forces can cause the tile to crack or lose its bond to the
subfloor if the tile installation is not allowed to move with
the substrate.
TCNA’s Handbook mandates a soft movement joint
every 20 – 25 feet (6 – 7.6 M) for interior installations,
closer if exposed to sunlight and moisture, and every
8 – 12 feet (2.4 – 3.6 M) for exterior exposure installations
(EJ171-09). These soft joints in the tile assembly and subfloor
will absorb the damaging stress that would be transmitted to
the tile. That’s why it’s important that movement joints in the
subfloor be carried through the tile installation. Commercial
100% Silicone Caulk meets the requirements of movement
joint sealant for commercial floors in traffic situations by
meeting the requirements of ASTM C-920, ANSI and the
TCNA Handbook.
Commercial 100% Silicone Caulk takes the place of the
rigid cement grout over the movement joint in the subfloor.
Since Commercial 100% Silicone Caulk has a high Shore A
hardness (greater than the required 35) it is suitable for traffic
areas, as well as joints around the perimeter of the installation
out of traffic paths.
Commercial 100% Silicone Caulk has distinct advantages
over traditional urethane sealants, which are typically used
in high traffic installations:
w Excellent resistance to most staining agents, so the joints
won’t attract dirt, requiring less maintenance.
w Excellent UV resistance, maintaining its color and elastic
properties after years of exposure to weather. Urethane
sealant can discolor and harden over time when exposed
to UV rays/light.
w Achieves excellent bond strength to glass, non-porous, and
glazed surfaces, making it the ideal product for installation
between ceramic and porcelain tile.
w Shorter tack-free time (minimizing dust sticking to the
surface) and shorter cure times (allowing for earlier traffic)
than urethane sealants.
w Greater temperature service range (-60° F to 200° F
[-51° C - 93° C]).
w Matches the core colors of Prism
®
SureColor
®
Grout,
Polyblend
®
Grout and CEG-Lite
™
100% Solids Commercial
Epoxy Grout, so designers have a consistent look across
the entire tile installation; urethane sealants are generally
available in only a few colors (i.e. white, gray, black, and tan).
Sealant Options:
■
Commercial 100% Silicone Caulk
Refer to corresponding installation details for product selections.
These drawings have been taken from Tile Council of America’s (TCA) Handbook for Ceramic Tile Installation and are also compatible with the drawings in Terrazzo, Tile and
Marble Association of Canada’s (TTMAC) Handbook. For your convenience, Custom Building Products options are substituted for TCA’s and TTMAC’s generic product
descriptions. Please refer to the handbooks for complete information.
Seal Beach, CA 90740 USA Surrey, B.C. Canada V3W3G1 Architectural Services [phone] www.custombuildingproducts.com
© 2010 8/10
MOVEMENT JOINTS
Vertical and Horizontal
CEJ171, CEJ171a, CEJ171d
(TCA EJ171, EJ171a, EJ171d)
REINFORCED MORTAR BED
BOND COAT
CONCRETE OR WOOD
BACKER ROD WITH BOND BREAK
GROUT JOINT
CERAMIC TILE
COMPRESSIBLE BACK-UP
WIDTH 4x EXPECTED MOVEMENT
WATERPROOF MEMBRANE (IF REQUIRED)
SEALANT/SILICONE CAULK, DEPTH = ½ WIDTH
BOND COAT
MORTAR BED
COLD JOINT
CERAMIC TILE
SAW-CUT CONTROL JOINT
SEALANT AND BACK-UP
BOND COAT
CONCRETE OR MASONRY
BACK-UP STRUCTURAL JOINT
FLEXIBLE SEALANT
BOND BREAKER TAPE
CERAMIC TILE
Expansion Joint – CEJ171
Construction Joint – CEJ171a
Isolation/Expansion Joint – CEJ171d
Technical Services 800-282-8786
custombuildingproducts.com
Technical Bulletin
©2013 6/13R
The information in this bulletin is presented in good faith, but no warranty,
express or implied, is given nor is freedom from any patent in as much as
any assistance furnished by CUSTOM
®
with reference to the safe use and
disposal of its products provided without charge. Custom
®
Building Products
assumes no obligation or liability therefore, except to the extent that any such
assistance shall be given in good faith.