SURFACE PREPARATION/ CRACK ISOLATION MEMBRANE
Ceramic, Mosaic, Quarry, Paver, Slate and Granite

SPECIFICATION				PLANI/LASTIC
							Crack Isolation Membrane

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DESCRIPTION: A single component, white elastomeric membrane designed for crack isolation in ceramic tile installations. This easy-to-use crack suppression membrane is water based and has a very mild odor.  When properly applied, a cured PLANI/LASTIC membrane can accommodate minor substrate movements and cracks up to 1/8” (3mm) in width.

Specify for interior floor installations (light commercial, residential applications only).

Specify for applications over exterior grade plywood (interior floor dry areas only) where gaps do not exceed 1/8"”(3mm).

Specify for application of two dissimilar substrates (i.e. plywood to concrete).

Specify for application over concrete where existing cracks do not exceed 1/8” (3mm).

Specify over properly prepared concrete, exterior grade plywood, (interior floors and countertops dry areas only), cement mortars, leveling coats, and cementitious backer units.

DO NOT specify for exterior installations.

DO NOT specify for pools, tanks, jacuzzis or fountains.

DO NOT specify for use on cracks that have an out of plane movement.

DO NOT specify for use to bridge expansion joints or control joints.

DO NOT specify over presswood, particleboard, masonite, asbestos board, chipboard, Lauan, gypsum floor compounds, metal or similar dimensionally unstable substrates.

When specifying PLANI/LASTIC in the Tile Section selected – ceramic, mosaic, quarry, paver, slate, or granite – add appropriate articles or paragraphs under the applicable PART as indicated.
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PART 1 GENERAL

REFERENCES
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There are no national standards for crack isolation membranes.  As a crack isolation membrane, the following references apply:
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ANSI A 137.1 Material Specifications for Ceramic Tile

Tile Council of America, Inc. (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.

If frozen, do not stir until material has completely thawed.

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 printed instructions.

PART 2 PRODUCTS

MEMBRANE MATERIALS

MEMBRANE: PLANI/LASTIC one-component, water cleanable, white crack isolation membrane, as manufactured by MAPEI CORPORATION.

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

When specifying MORTAR MATERIALS for setting tile on PLANI/LASTIC crack isolation membrane, specify KERALASTIC or GRANI/RAPID systems (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

No mixing required.  PLANI/LASTIC is ready to use.

PART 3 EXECUTION

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Specifications for surface conditions are listed in the beginning of the specification of MAPEI’s Architectural Binder.  These specifications should be called out with the related work sections.  Delete non-applicable conditions.  (Refer to ANSI EXPLANATION AND NOTES section: AN-3 RELATED WORK SPECIFIED IN OTHER SECTIONS.)
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EXAMINATION

Examine surfaces to receive membrane/adhesive and conditions under which tile will be installed.  Do not proceed with work until surfaces and conditions comply with requirements by manufacturer’s printed instructions.

PREPARATION

Prepare substrate in accordance with manufacturer’s printed instructions.

INSTALLATION

Install crack isolation membrane in accordance with manufacturer’s printed instructions.

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Select TCA method to be used and delete non-applicable methods.  (Select from latest edition of the TCA Handbook.)
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CRACK ISOLATION MEMBRANE

Floor Tile: Install in accordance with TCA method [[F112], [F115], [F144].

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

Tile surfaces shall be clean and dry.	

PROTECTION

Protect from water contact and general traffic for at least 72 hours after installation.  Plywood or stepping boards may be used after 24 hours when occasional stepping on the floor is unavoidable.

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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 technical assistance, contact:

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