INSTALLATION: 
						Ceramic, Mosaic, quarry, Paver,
						Slate, Marble and Granite

SPECIFICATION		  	 MAPECEM PREMIX
Fast-Setting, One Component, Polymer-Modified, Hydraulic, Cement-Based Premixed Mortar
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DESCRIPTION: Fast-setting, premixed, polymer- modified, hydraulic cement-based mortar for concrete repairs and subfloor preparation work.  Mixed exclusively with water, MAPECEM PREMIX provides an easy to use, high compressive strength, fast-setting mortar that sets completely without shrinkage cracks within 24 hours.  When properly used, even in the worst conditions, its moisture emission is less than 3 lbs/1000 sq.ft./24 hrs. (1,36 kg/92.9 m²/24hrs.) when measured with the calcium chloride test kit, allowing the floor covering (vinyl, wood, rubber, linoleum, carpet, etc.) to be installed after 24 hours.  Ceramic tile and natural stone flooring can be installed after only 3 to 4 hours.

	Specify for concrete repairs and interior concrete subfloor preparation work with minimal delay.

Specify for building slopes ad access ramps from 1/4” (6mm) minimum thickness to a maximum 4” (10cm).  For featheredging, specify PLANICRETE EP epoxy binder (see PLANICRETE EP technical data sheet for details).

Specify for filling trenches, holes, and cuts in existing concrete up to 4” (10cm) deep.

Specify for new and old concrete subfloor leveling and topping in thickness of 1/4” (6mm) minimum to a maximum of 4” (10cm (see LIMITATION 4.)

Specify for building shower bases and curbs up to a maximum of 4” (10cm) thick.

Specify over well-supported, structurally solid wood, plywood, OSB, steel and dimensionally unstable substrates, install a polyethylene sheeting (>30mil/0,75 mm thick) or an effective moisture protection membrane over the entire substrate and apply a MAPECEM PREMIX wire-mesh reinforced floating screed at least 1 3/8” (35mm) thick or thicker.  This type of work is restricted to interior installations only.

Specify with PLANICRETE EP Primer, instead of the slurry board bond coat, when featheredging is required

DO NOT specify any Portland cement or other ingredients.  MAPECEM PREMIX is ready to use, specify to mix with water.

DO NOT specify on vertical surfaces.

DO NOT specify for exterior areas or areas close to exterior doors where de-icing and snow-melting chemicals are used or carried indoors by incoming traffic.

DO NOT specify in thickness less than 1/4” (6mm) minimum and more than 4” (10cm) maximum.  
When leveling or repairing concrete subfloor areas larger than 16 sq. ft. (1,5 m²), the maximum thickness must not exceed 2” (5cm) (refer to regular MAPECEM technical data sheet for larger applications.)

DO NOT specify where hydrostatic or moisture problems exist.

When specifying MAPECEM PREMIX  in the Tile Selection selected – ceramic, mosaic, quarry, paver, slate, marble or granite – add appropriate articles or paragraphs under the applicable PART as indicated.
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PART 1 GENERAL

	REFERENCES
	
ANSI A108.1B – Installation of Ceramic Tile on a Cured Portland Cement Mortar Setting Bed with Dry-Set or Latex Portland Cement Mortar
	
	ASTM C-33 – Standard Specification for Ceramic Tile

	ANSI A137.1 – Specification for Ceramic Tile

	The Tile Council of America (TCA) – Handbook for Ceramic Tile Installation	

SUBMITTALS

Product Data: Submit manufacturer’s technical information and installation instructions for materials required.

	QUALITY ASSURANCE
	
Provide tile, grout and setting materials from one source.  Additives, dry-set mortars, installation materials and grouts shall be from the same manufacturer.
	
DELIVERY, STORAGE AND HANDLING
	
Deliver and store packaged materials in original containers with seals unbroken and labels intact until time of use.  Prevent damage or contamination to materials by water, freezing, foreign matter or other causes.

Deliver and store materials on site at least 24 hours before work begins.

Provide heated and dry storage facilities on site.

	PROJECT CONDITIONS

Maintain environmental conditions and protect work during and after installation to comply with referenced standards and manufacturer’s printed recommendations.

Vent temporary heaters to exterior to prevent damage to tilework from carbon dioxide build-up.

Maintain temperature at not less than 50 degrees F (10 degrees C) in tiled areas during installation and for 7 days after completion, unless higher temperatures are required by referenced installation standards or manufacturer’s  written instructions.

PART 2 PRODUCTS

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Select screed to be used and delete non-applicable method.
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	[MORTAR MATERIALS

[SHOWER BASE AND CURB: MAPECEM PREMIX one component polymer modified, hydraulic cement-based pre-mixed mortar and water, as manufactured by MAPEI CORPORATION.]

[CONCRETE MATERIALS: MAPECEM PREMIX, one component polymer modified cement-based premixed mortar and water as manufactured by MAPEI CORPORATION.]	

[CONCRETE PATCH: MAPECEM PREMIX, one component polymer modified cement-based premixed mortar and water as manufactured by MAPEI CORPORATION.]] 

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When specifying MAPECEM PREMIX in performance specification, Call MAPEI CORPORATION’s Technical Service Department toll-free number for assistance with product characteristics.

When specifying MORTAR MATERIALS, refer to respective suggested mortar specifications – KERALASTIC, KERAPLY or PLANICRETE 50 with KERABOND dry-set mortar when specifying LATEX-PORTLAND CEMENT MORTAR, ANSI A118.4 (see respective specification sheets).

When specifying GROUT MATERIALS, refer to respective suggested grout specification – ULTRA/COLOR sanded polymer-modified cementitious grout or KER 200 polymer-modified Portland cement tile grout or KER 800 unsanded polymer-modified Portland cement tile grout (ANSI A118.6), or KERAPOXY 100% Solids Epoxy Grout (ANSI A118.3). ).  Grout tiles according to grout instructions and ANSI A108.10 or A108.6 specifications.

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MIXES

Proportion and mix screed in accordance with manufacturer’s printed instructions.

PART 3 EXECUTION

INSPECTION

Verify substrate surface is ready to receive work of this Section.  Do not proceed with work until surfaces and conditions comply with manufacturer’s requirements.

INSTALLATION

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Select screed installation method and delete non-applicable method.
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Install [mortar screed] [concrete screed] [concrete patch] in accordance with manufacturer’s printed instructions [and ANSI A108.1B]

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Select appropriate TCA method to be used and delete non-applicable methods (select from latest edition of TCA Handbook).
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[Floor Tile:  Install in accordance with TCA method. [F101], [F103], [F111], [F112], [F121], [F125], [F132], [F134], [F141].]
	
	[Refrigerator Room Tile:  Install in accordance with TCA method R612.]

	[Steam Room Tile: Install in accordance with TCA method SR613]

	[Shower receptor:  Install in accordance with TCA method [B414], [B415], [TR418]

	[Stair Tile:  Install in accordance with TCA method S151]

[Thresholds, saddles, window stools:  Install in accordance with TCA method [WS610], [TH611].]	

	Do not wet cure the freshly applied screed

When surface grinding is required, this may be done more easily when the screed has cured sufficiently to support the weight of the equipment but before it has reached a final cure.  Generally, the final polishing and grinding may be done about 1 hour after installation.

All along the perimeter of the floor, around columns, pillars and elevated bases, leave at least a 3/8” (10 mm) gap and fill in with cardboard, polystyrene, cork or any such compressible material.

Install control joints lengthwise and crosswise at regular intervals according to needs and/or specifications.

	Install expansion and control joints in accordance with TCA method EJ171.

	Grout joints shall be clean and free from standing water, dust and foreign substances.

	Tile surfaces shall be clean and dry.

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Specify FILED QUALITY CONTROL for the moisture content in the finished slab when specifying the resilient floor covering or water sensitive floor covering materials such as green marbles, marble agglomerates, wood, linoleum, etc.
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	[FIELD QUALITY CONTROL

Use a calcium carbide hygrometer to measure the moisture content of the screed.  Moisture content must not exceed 2.5% in screed before covering.]

PROTECTION

Protect floors at least 24 hours or until the moisture content of the screed is less than 2.5% (maximum) before installing at a resilient floor covering or surfacing materials.

Protect floors for ceramic tile installation, generally after 3-4 hours, the screed is sufficiently dry to accept the installation of ceramic tiles.
	
A cured MAPECEM PREMIX screed may become very dense.  Check the water absorption of the screed by the water droplet test method in order to choose the appropriate adhesive for bonding the floor covering material.  Avery dense screed may require the use of a reactive adhesive for the installation of a water sensitive floor covering.

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When dealing with cement-based products, it should be noted that temperature and humidity during and after installation of tile affect final curing time, i.e., low temperatures (60 degrees and under) and high humidity (70% and above) will delay final cure time.
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For further information and assistance, contact:

				     MAPEI CORPORATION
				     1501 WALL STREET
				     GARLAND, TEXAS  75041 – 4046
				     1-800-992-6273