                                                           PAVERS
                                                 BRICK, TILE & NATURAL STONE
                                                          
                                                              Data Sheet  230.6

                                    SPECIFICATIONS

        1.0 GENERAL
             1.1  Work performed under the requirements of this section
                  shall be subject to all  conditions  set  forth under 
                  Part  1,  "General Conditions" as applicable to this 
                  portion of the work.
        2.0 SCOPE OF WORK:
             2.1  Furnish all labor, materials and equipment necessary to
                  complete the installation of  (insert type of Paver,
                  Brick, Tile, Stone,etc.) ... in  frost,  weather  and
                  shock resistant setting beds  as  specified herein and  
                  where indicated in drawings.
                  NOTES TO SPECIFIER:
                  1)   LATICRETE  Latex  Mortars are designed for 
                       installations  over concrete,  block,  brick  and  
                       masonry type surfaces including gypsum wallboard 
                       and plasters.  LATAPOXY Epoxy Adhesive and Grout
                       may  be used  over all of these same surfaces and
                       may also be used over plywood, steel, vinyl tile,
                       asphalt tile, and linoleum.
                  2)   This is a total system. Call out products by name,
                       number and application to insure that 
                       specifications do not differ from manufacturer's 
                       instructions.
                  3)   The following shall be inserted in the Concrete
                       Section:
                       "No sealers or curing compounds shall be used on
                       concrete slabs which  are  to be covered with
                       pavers.   Such  slabs  shall  be covered and wet
                       cured for a minimum of seven (7) days. Areas that 
                       are to receive finished flooring, installed by the
                       thin bed method, shall have a wood float finish,     
                       be true to within 1/8" (3mm) in 10' (3m), and pitched
                       to drains where required. Areas requiring fill,
                       patching or leveling shall be prepared by the
                       General Contractor using LATICRETE 3701 Grout and 
                       Mortar Admix/Portland cement/sand in accordance
                       with the manufacturer's instructions.  Gypsum or
                       asphalt based leveling compounds shall not be
                       permitted. The surface which is to be covered
                       shall be left clean, free of dust,  plaster, 
                       sealer or curing compounds and form oil.   Any 
                       contamination shall be removed by the Contractor
                       who  applied the material." 
                  4)   Pavers and their setting and grouting mortars do
                       not constitute a waterproof barrier and  should 
                       not be considered as a replacement for a waterproof
                       membrane. For information on thin, load bearing 
                       thin load bearing  waterproof membranes,  request
                       LATICRETE Data File 235.0.
        3.0 MATERIALS:                                                      
             3.1  All pavers, where called for, shall be...(insert type,
                  style, finish and  size)...  as  manufactured by
                  (insert manufacturer's  name  and address).
             3.2  Materials  for installing pavers  shall  be...(select 
                  one: Portland cement/sand mortar gauged with LATICRETE
                  4237 Latex Thin Set Mortar Additive or LATAPOXY  210
                  Epoxy Adhesive and  Grout).  Materials  for grouting 
                  tile work shall be ... (select one: factory prepared grout
                  gauged  with LATICRETE 3701 Grout & Mortar Admix or
                  LATAPOXY 210 Epoxy Adhesive and Grout).   All setting
                  and grouting mortars shall be  as manufactured by
                  LATICRETE INTERNATIONAL,INC., Bethany, CT 06525-3498
                  U.S.A.
                       Portland Cement: ASTM C-150--Type 1 
                       Sand:  Masons Sand ASTM C-144 (0.0-2.5 mm), 
                       Concrete Sand ASTM C-33  (0.1-5.0 mm) and bagged 
                       30-60 Mesh (0.0-0.5  mm)  Silica. 
                       Latex Additives:  As manufactured by  LATICRETE  
                       INTERNATIONAL,INC. 
                       Provide  LATICRETE  4237  Latex Thin Set  Mortar
                       Additive  and LATICRETE 3701 Grout & Mortar Admix.
                       Installation shall be in strict accordance with 
                       manufacturer's instructions.
                       Epoxy  Adhesive  and  Grout:   As  manufactured by
                       LATICRETE INTERNATIONAL, INC. Provide  LATAPOXY 210 
                       Epoxy Adhesive and Grout. Installation shall be in 
                       strict accordance with manufacturer's instructions.
                       The  use  of polyvinyl acetate,  natural rubber or
                       resin  latex emulsions shall not be permitted.
            3.3  All Mortar Additives shall be non-toxic,  non-flammable,
                       and  non-hazardous during storage, mixing, 
                       application, use and cleanup.
             3.4  The bedding and grouting mortars shall be weather,
                       frost, shock and chemical resistant and shall meet 
                       the following physical requirements:
                   Compressive strength:           
                   Thick bed mortar       3000 psi Min. (211 kg/cm2) Min. 
                   Compressive strength:              
                   Thin bed, bonding,
                   grouting mortars       3000 psi Min. (211 kg/cm2) Min. 
                   Tensile strength:
                   Thin bed, bonding,
                   grouting mortars          500 psi Min.(35 kg/cm2) Min. 
                   Bond Strength:     
                   Thin bed, bonding, 
                   grouting mortars          500 psi Min.(35 kg/cm2) Min. 
                   Water absorption                             4.0% Max. 
                   Ozone resistance: 200 hours 
                   @ 200 ppm                          No loss of strength 
                   Smoke contribution factor                            0 
                   Flame contribution factor                            0 
             3.5  The  finished  mortar and grout shall be resistant to  
                  urine,  dilute acid, dilute alkali, sugar, brine and  
                  food waste products.
             3.6  All  Mortar  Additives and Epoxy Adhesives and Grouts 
                  shall be compatible and from one manufacturer.
             3.7  All  materials  shall be delivered to the job site in 
                  the  original containers  with the manufacturer's  
                  identification on each  package. The  addition  of
                  water  or other materials to  dilute  the  Mortar  
                  Additive or Epoxy Adhesive and Grout on the job site 
                  will not be permitted.
        4.0 APPROVALS AND SAMPLES:
             4.1  Prior to commencing work, submit for approval 
                  representative samples of each type and color of paver. 
             4.2  The supplier of Mortar Additives and Epoxy Adhesives
                  and  Grouts shall  have  been  regularly  engaged in
                  the  manufacture of these materials for a minimum of
                  ten (10) years, and shall submit to the architect a
                  list of three (3) similar installations, each having
                  a minimum of five (5) years service.
             4.3  Alternate materials must be submitted and approved 10 
                  days prior to the bid date.  Submissions must be  
                  accompanied by documentation from an independent  
                  testing laboratory confirming compliance  with  all  
                  requirements of this Specification.
        5.0 HANDLING AND STORAGE OF MATERIALS:
             5.1  Handle and store pavers in a manner to avoid chipping, 
                  breakage or the intrusion of foreign matter. 
             5.2  Handle, store, mix and apply proprietary setting and 
                  grouting  materials in strict compliance with the  
                  manufacturer's  instructions. 
             5.3  The contractor shall take precautions to protect the 
                  Mortar Additives, Admixtures and Epoxies from freezing 
                  or from excessive heat.

        6.0 MORTAR AND GROUT MIXES:
             6.1  LATEX PORTLAND CEMENT THIN BED MORTAR MIX & SLURRY
                  BOND COAT
                  1 bag (42-50 kg) Portland cement
                  100 lb. (45 kg) Sand (30-60 mesh) (0.0-0.5 mm)
                  5 Gallons (19 liters)  LATICRETE 4237  Latex Thin Set  
                  Mortar  Additive. (Adjust quantity of liquid to obtain 
                  proper consistency)
             6.2  LATEX PORTLAND CEMENT GROUT
                  50  lb  (25  kg) LATICRETE Floor Grout & Joint Filler 
                  (Color  to be selected by Architect or owner)
                  1 Gallon (4 liters) LATICRETE 3701 Grout &  Mortar Admix  
                  (Adjust quantity of liquid to obtain proper consistency. 
             6.3  EPOXY ADHESIVE & GROUT
                  LATAPOXY 210 Epoxy Adhesive and Grout ( Color to be  
                  selected  by  Architect or owner)
             6.4  LATEX  PORTLAND CEMENT LEVELING BEDS AND SCRATCH COATS  
                  (up to 2" +- thick) (50 mm+-)
                  1 Bag (42-50 kg) Portland cement
                  3 Cubic Ft. (150 kg) Sand (ASTM C-144) (0.0-2.5 mm)
                  5  Gallon (19  liters) LATICRETE 3701 Grout &  Mortar  
                  Admix  (Adjust quantity of liquid to obtain proper 
                  consistency) 
             6.5  LATEX PORTLAND CEMENT THICK BED MORTAR (2" +-)(50 mm+-)
                  1 Bag (42-50 kg) Portland cement
                  3 Cubic Ft. (150 kg) Coarse Sand (ASTM C-33)(0.1-5.0 mm)
                  5  Gallon  (19  liters) LATICRETE 3701 Grout &  Mortar 
                  Admix  (Adjust quantity of liquid to obtain proper  
                  consistency)
        7.0 PREPARATION:
             7.1  Prior to commencing the installation,  the contractor  
                  shall examine the areas to be covered and advise the 
                  General Contractor and Architect of any existing 
                  conditions or surface contamination which will 
                  require correction before the work commences.       
             7.2  Before starting,  surface to be covered  shall be 
                  cleaned to  remove soil, mortar, etc.
             7.3  Dry or  dusty concrete or masonry surfaces  shall be
                  wet down or washed and excess water removed just prior
                  to the application of the pavers.
        8.0 MIXING:
             8.1  Machine Mixing: Mixer shall be a rotating blade mortar 
                  mixer.  Place LATICRETE liquid in mixer, start machine
                  and add sand then cement. Mix  only long enough to wet
                  out the batch. Do not over-mix. Stop mixer and dump  
                  mortar from mixer promptly.
             8.2  Hand Mixing:  Pre-mix the dry ingredients (sand and  
                  cement).  Place LATICRETE liquid in clean container
                  or mixing box, add dry material and mix. Adjust amount 
                  of liquid or dry material to obtain proper consistency. 
             8.3  LATAPOXY Mixing: Thoroughly stir Part "A" and Part "B" 
                  resins separately.  Use a clean stirrer for each.   
                  Combine equal parts of "A" and "B" resin in a clean 
                  container and stir for 3 minutes. Then add the Filler  
                  Powder and stir to a smooth trowelable  consistency.   
                  Adjust the quantity of Filler Powder so the finished  
                  mortar is of the proper consistency for application.
        9.0 INSTALLATION BY THIN BED METHOD:
             9.1  The LATICRETE or LATAPOXY mortar shall be applied with
                  a notched trowel using a scraping motion to work  the  
                  material into good contact with the surface to be 
                  covered.  A trowel having notches approximately  
                  1/8"  x  1/8"  (3  mm x  3  mm)  is  recommended  for  
                  ceramics and mosaics;  1/4" x 1/4" (6 mm x 6 mm) for
                  wall tile; 1/4" x 3/8" (6 mm x 9 mm) for quarry tile, 
                  pavers, natural stone and large tiles.
             9.2  Only as much mortar shall be applied as can be covered 
                  within  20-30 minutes,  or while surface is still tacky 
                  and wet.  When installing large pavers or sheet mounted 
                  ceramics or mosaics, a small quantity of the mortar shall
                  be troweled onto the back of each piece or sheet. Tile/  
                  pavers shall then be set in place and rapped or beaten
                  with a small beating block to insure 100% full bedding
                  and a true surface. Pavers shall be aligned to show  
                  uniform joints and then allowed to set until firm.
             9.3  Excess mortar shall be cleaned from the surface of the 
                  tile/pavers with a wet cloth or sponge while the mortar
                  is fresh.
        10.0 INSTALLATION BY THICK BED METHOD:
                  Vertical Surfaces: 
            10.1  On wire lathe ,  concrete and masonry surfaces,  a  
                  weather-resistant scratch and leveling coat shall be 
                  troweled on, float plumb and true and allowed to set.   
                  Tile/pavers shall be installed any time after leveling
                  coat is firm as described in section 9.0.
                  Horizontal Surfaces:
            10.2  Bed thickness shall be a minimum of 2" (50 mm).  The 
                  prepared mortar shall be spread approximatekly one-half
                  the desired bed thickness and 2" x 2" (50 mm x 50 mm) 
                  16 gauge, welded, galvanized reinforcing mesh  shall
                  be  laid.   The wire shall be lapped 3"  (75  mm) and  
                  additional  mortar  shall then be placed over the wire 
                  to bring the bed to the desired thickness.  The mortar  
                  shall be rodded and compacted with a steel trowel.
                  Note:  Bed  may  be  reduced to a nominal 1"  (25mm)  
                  thickness  and reinforcing wire omitted when bonding  
                  directly to concrete slabs or a load  bearing membrane.
                  For information on thin, load bearing waterproof 
                  membranes, request LATICRETE Data File 235.0.
            10.3  Before placing pavers on a green or wet screed bed, 
                  a slurry bond coat shall be applied to the mortar bed
                  using a flat trowel; or a slurry bond coat shall be 
                  applied to the back of each paver just prior to
                  placing on the bed.
            10.4  Pavers shall be placed in the wet slurry coat before
                  the surface dries. Uniform joints shall be maintained.
            10.5  After each piece is laid, it shall be beat into place
                  with a wooden block or rubber mallet to imbed it and
                  to even the surface, before mortar takes initial set.
            10.6  Surface shall be pitched to drains where specified.
            10.7  On hardened  screed or mortar bed, pavers shall
                  be installed by the thin bed method-see Section 9.0.
        11.0 EXPANSION AND CONTROL JOINTS:
            11.1  Existing joints in concrete subfloors must be carried 
                  through  tile work and shall conform to architectural
                  details.
            11.2  Expansion joints shall be installed where  brick, 
                  pavers, etc. abut restraining  surfaces,  such as  
                  perimeter  walls,  curbs,  columns, corners, etc.
            11.3  Interior installations shall  have expansion joints
                  spaced a maximum of 24' x 24' (7 m x 7 m). Exterior 
                  areas  shall  have  expansion joints spaced a maximum
                  of 15' x 15' (4.5 m x  4.5 m).  Expansion joints shall
                  be  raked or  cut  through  the setting  bed  to the  
                  supporting slab or structure. ( Note to Specifier:  
                  Optimum ratio of joint layout, length to width, is 1:1, 
                  and shall not be greater than 2:1. Consult a quality 
                  sealant manufacturer for recommended sealant).
        12.0 GROUTING AND POINTING JOINTS:
                  NOTE TO SPECIFIER: Non-slip, abrasive or rough textured 
                  tile  can have a factory applied hot paraffin coating on
                  the face to facilitate cleaning.
            12.1  Joints shall be grouted or pointed with ( choose one: 
                  Latex Portland Cement Grout as per Section 6.2 or Epoxy 
                  Grout as per Section 6.3). 
            12.2  Joints shall be packed full and free of all voids and  
                  pits. (Tool or rake as specified). 
            12.3  Excess  mortar shall be cleaned  from the surface with 
                  water and a damp sponge as the work progresses, while  
                  mortar is fresh and before it hardens.
            12.4  Hardened grout film or haze shall be removed using 
                  LATICRETE  TC-500 Tile,  Grout  &  Masonry Cleaner.  
                  Saturate the grout  joints  with water, then dampen
                  the surface with the cleaner.  For cleaning unglazed  
                  tile, quarry  tile  and pavers also  sprinkle  fine 
                  sand (30-60  mesh) (0.0-0.5 mm) over the surface. 
                  Allow to  soak  15-30 minutes and then use a power 
                  scrubbing machine with a coarse texture nylon pad to  
                  remove the grout film.
                  CAUTION: DO NOT USE SAND ON SOFT GLAZED TILES OR 
                           POLISHED MARBLE.
                           DO NOT USE ACID TYPE CLEANERS ON COLORED 
                           GROUT JOINTS.
                           DO NOT USE ACID TYPE CLEANERS OR TC-500 ON  
                           POLISHED MARBLE.

        13.0 PROTECTION:
             13.1 The contractor shall take precautions to protect the  
                  finished work from damage by other trades.   Cold 
                  Weather Note: The setting of Portland cement mortars 
                  is retarded by low temperatures and finished  work 
                  should be protected for an extended period of time.


        (c) 1985 LATICRETE INTERNATIONAL, Inc.

        The  right  to  copy,  distribute,  and  utilize  for  commercial  
        purposes is specifically granted to Architects, Engineers, and 
        Specifications writers.

        LATICRETE    Technical   Services   provides   review   of    job  
        specifications and plans, project detail planning and review, and  
        provides  answers  to questions concerning  the  installation  of  
        ceramic tile,  pavers, brick, marble and natural stone. Call toll 
        free in the continental USA :  (800) 243-4788.  In Connecticut and 
        world wide: Telephone USA (203)393-0010.   Telex 96-3541 answerback  
        LATICRETE BTHY. 
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