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					                                                                                 SLURRY BOND COATS
                                                                               WHEN AND WHAT TO USE
                                                                                            TDS 143

Introduction
Slurry Bond Coats typically are used over horizontal concrete to provide a wet, tacky layer prior to placing a
traditional or latex fortified ‘mud’/ full mortar bed. They are also commonly used over traditional or latex
fortified ‘mud’/ full mortar beds before laying a hard architectural finish, such as ceramic tile, stone and brick.
They are also used to bond ‘wet’ consistency toppings or leveling beds over difficult substrates, such as steel
trowelled concrete. In all cases, their purpose is to provide an adhesive layer that bonds the substrate and
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the material going over it. However, the LATICRETE System includes a variety of materials that can be
utilized in Slurry Bond Coat applications depending on site conditions and other factors.

Recommended Slurry Bond Coat Mortars
I. LATICRETE 4237 Latex Thin-Set Mortar Additive
A). Mixed with LATICRETE 211 Crete Filler Powder
Unequaled strength and flexibility in a latex fortified cementitious mortar combined with excellent working time
- the ‘all-round’ choice with optimum balance between ‘open’ time and setting time; meets or exceeds all ANSI
A118.4 and ISO requirements;
For use:
1). over concrete before placing a ‘semi-dry’ consistency traditional mortar bed;
2). over ‘semi-dry’ consistency traditional mortar beds before placing ceramic tile, stone
     or brick.
Typical Mix Ratio: 1 volume LATICRETE 4237 Latex Thin-Set Mortar Additive :1 volume LATICRETE 211
Crete Filler Powder ( 1:1.5 by weight);
Approximate Coverage @ 1/16 “ (1.5 mm) thickness: 70-90 ft2 (6.5-8.5 m2) per gallon (3.8 l ) of LATICRETE
4237 Latex Thin-Set Mortar Additive;
Consult Data Sheet 230.1 and package instructions for further information

Note: in cold climate conditions, or under ‘wet’ consistency toppings/overlays, or with ‘negative’ cast panels,
use LATICRETE 3701 Mortar Admix mixed with LATICRETE 211 Crete Filler Powder (see section below).


B). Mixed with LATICRETE 272 Premium Floor N’ Wall Thin-Set Mortar, LATICRETE
    317 Floor N’ Wall Thin-Set Mortar or LATICRETE 220 Marble & Granite Mortar
Maximum ‘open’ time with excellent strength and flexibility - ideal for hot, dry conditions especially in exterior
applications;
For use:
1) over concrete before placing a ‘semi-dry’ consistency traditional mortar bed;
2) over ‘semi-dry’ consistency traditional mortar beds before placing ceramic tile, stone
   or brick.
Typical Mix Ratio: 1 volume LATICRETE 4237 Latex Thin-Set Mortar Additive :1 volume LATICRETE 272
Premium Floor N’ Wall Thin-Set Mortar, LATICRETE 317 Floor N’ Wall Thin-Set Mortar or LATICRETE 220
Marble & Granite Mortar ( 1:1.5 by weight);
Approximate Coverage @ 1/16 “ (1.5 mm) thickness: 70-90 ft2 (6.5-8.5 m2) per gallon (3.8 l ) of LATICRETE
4237 Latex Thin-Set Mortar Additive;

Consult Data Sheet 230.1 and package instructions for further information

Note: in cold climate conditions, or under ‘wet’ consistency toppings/overlays, or with ‘negative’ cast panels,
use LATICRETE 3701 Mortar Admix mixed with LATICRETE 211 Crete Filler Powder (see section below).

II. LATICRETE® 3701 Mortar Admix
A). Mixed with LATICRETE 211 Crete Filler Powder
The same strength and flexibility as LATICRETE 4237 Latex Thin-Set Mortar Additive
mixed with LATICRETE 211 Crete Filler Powder, but with less ‘open’ time and a faster ‘final set’ time.
Meets or exceeds all ANSI A118.4 and ISO strength requirements.
For use:
1) over concrete before placing a ‘semi-dry’ consistency traditional mortar bed in
   cold climate conditions;
2) over ‘semi-dry’ consistency traditional mortar beds before placing ceramic tile, stone
   or brick in cold climate conditions;
3) under ‘wet’ consistency toppings/overlays;
4) over the backs of ceramic tile, stone or brick before placing concrete or mortar during
   fabrication of ‘negative’ cast panels.
Typical Mix Ratio: 1 volume LATICRETE 3701Mortar Admix :1 volume LATICRETE 211 Crete Filler Powder (
1:1.5 by weight);
Approximate Coverage @ 1/16 “ (1.5 mm) thickness: 70-90 ft2 (6.5-8.5 m2) per gallon (3.8 l ) of LATICRETE
3701 Mortar Admix;

Consult Data Sheet 231.0 and package instructions for further information

B). Mixed with LATICRETE 272 Premium Floor N’ Wall Thin-Set Mortar, LATICRETE
    317 Floor N’ Wall Thin-Set Mortar or LATICRETE 220 Marble & Granite Mortar
Provides ‘open’ time, strength and flexibility similar to LATICRETE 4237 Latex Thin-Set Mortar Additive mixed
with LATICRETE 211 Crete Filler Powder, but allows the convenience of using the same latex additive for
‘semi-dry’ consistency mortar beds and bond coats – only one latex additive is needed on site.
For use:
1) over concrete before placing a ‘semi-dry’ consistency traditional mortar bed;
2) over a ‘semi-dry’ consistency traditional mortar bed before placing ceramic tile, stone
   or brick.
Typical Mix Ratio: 1 volume LATICRETE 3701 Mortar Admix :1 volume LATICRETE 272 Premium Floor N’
Wall Thin-Set Mortar, LATICRETE 317 Floor N’ Wall Thin-Set Mortar or LATICRETE 220 Marble & Granite
Mortar ( 1:1.5 by weight);
Approximate Coverage @ 1/16 “ (1.5 mm) thickness: 70-90 ft2 (6.5-8.5 m2) per gallon (3.8 l ) of LATICRETE
3701 Mortar Admix;
Consult Data Sheet 231.0 and package instructions for further information

Note: in cold climate conditions, or under ‘wet’ consistency toppings/overlays, or with ‘negative’ cast panels,
use LATICRETE 3701 Mortar Admix mixed with LATICRETE 211 Crete Filler Powder (see section above).

III. LATICRETE 333 Super Flexible Additive
Mixed with LATICRETE 272 Premium Floor N’ Wall Thin-Set Mortar, LATICRETE
317 Floor N’ Wall Thin-Set Mortar or LATICRETE 220 Marble & Granite Mortar
Provides ‘open’ time and strength similar to LATICRETE 4237 Latex Thin-Set Mortar Additive mixed with
LATICRETE 211 Crete Filler Powder, but with superior flexibility for increased resistance to impact or
substrate flexure.
For use:
1) over concrete before placing a ‘semi-dry’ consistency traditional mortar bed;
2) over a ‘semi-dry’ consistency traditional mortar bed before placing ceramic tile, stone
or brick.
Typical Mix Ratio: 1 volume LATICRETE 333 Super Flexible Additive :1 volume LATICRETE 272 Premium
Floor N’ Wall Thin-Set Mortar, LATICRETE 317 Floor N’ Wall Thin-Set Mortar or LATICRETE 220 Marble &
Granite Mortar ( 1:1.5 by weight);
Approximate Coverage @ 1/16 “ (1.5 mm) thickness: 70-90 ft2 (6.5-8.5 m2) per gallon (3.8 l ) of LATICRETE
333 Super Flexible Additive;

Consult Data Sheet 266.0 and package instructions for further information




                                                                                                          Pg.     2
Data Sheets are subject to change without notice. For latest revision, check our website.
Notes:
a) exterior use limited to residential or light commercial applications and areas not
   subject to water immersion;
b) in cold climate conditions, or under ‘wet’ consistency toppings/overlays, or with
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   ‘negative’ cast panels, use LATICRETE 333 Super Flexible Additive (or LATICRETE
    3701 Mortar Admix) mixed with LATICRETE 211 Crete Filler Powder;
c) with exterior ‘negative’ cast panels, use LATICRETE 3701 Mortar Admix mixed with
   LATICRETE 211 Crete Filler Powder.

IV. LATAPOXY® 300 Epoxy Adhesive
Provides chemical resistance and bond strength that are superior to any latex modified Portland cement slurry
bond coat. Specifically designed for installing ‘green’ marble or other moisture sensitive stone and
agglomerates. Meets or exceeds all ANSI A118.3 requirements.
For use:
1) over concrete before placing a ‘semi-dry’ consistency traditional mortar bed;
2) over a ‘semi-dry’ consistency traditional mortar bed before placing ceramic tile, stone
   or brick;
3) over steel, glass and other hard to bond to surfaces as a ‘key’ coat before placing
   mortars, waterproof membranes, anti-fracture membranes, ceramic tile, stone
   or brick;
Typical Mix Ratio: see package instructions;
Approximate Coverage@ 1/16” (1.5 mm) thickness: 90-110 ft2 (8.4-10.2 m2) per #2 Unit

Consult Data Sheet 633.0 and package instructions for further information


Limitations
1) in cold climate conditions, or under wet consistency topping, leveling or patching
   mortars, or with ‘negative’ cast panels, do not use the following mortars as Slurry
   Bond Coats:
    A) LATICRETE 4237 Latex Thin-Set Mortar Additive mixed with LATICRETE 211
      Crete Filler Powder;
    B) LATICRETE 4237 Latex Thin-Set Mortar Additive mixed with LATICRETE 272
       Premium Floor N’ Wall Thin-Set Mortar or LATICRETE 220 Marble & Granite
       Mortar;
    C) LATICRETE 3701 Mortar Admix mixed with LATICRETE 272 Premium Floor N’
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       Wall Thin-Set Mortar or LATICRETE 220 Marble & Granite Mortar;
    D) LATICRETE 333 Super Flexible Additive with LATICRETE 272 Premium Floor N’
       Wall Thin-Set Mortar or LATICRETE 220 Marble & Granite Mortar;

2) over vertical concrete, renders, plasters, stuccoes or other masonry, do not use
   Slurry Bond Coats – they will cause plastic consistency plasters, stuccoes or mortars
   to slump or slide and are not needed to achieve a strong bond if the coating is
   properly trowelled or worked into full contact with a clean substrate;

3) to provide superior bond over vertical concrete, renders, plasters, stuccoes or other
   masonry, all of the Slurry Bond Coat mortars described above can be applied as a
   separate ‘key’ coat (either by trowelling or by the ‘spatter dash’/’dash coat’ method) –
   however, the ‘key coat’ must be allowed to set firm before the next coat or final finish is
  applied.

Technical Data Sheets are subject to change without notice. For latest revision, check our website @
www.laticrete.com                                             TDS 143.doc R 3 January 2005
LATICRETE, LATAPOXY and the                 logo are Registered Trademarks of LATICRETE International, Inc.




                                                                                                       Pg.   3
Data Sheets are subject to change without notice. For latest revision, check our website.

				
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