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SECTION 03 54 00
SELF-LEVELING CAST UNDERLAYMENT TOPPING
 
 
Copyright 2014 - 2016 ARCAT, Inc. - All rights reserved
** NOTE TO SPECIFIER ** LATICRETE SUPERCAP, LLC; adhered masonry veneer, grout, underlayment, waterproofing, crack control.
This section is based on the products of LATICRETE SUPERCAP, LLC, which is located at:
1 LATICRETE Park N.
Bethany, CT 06524-3423
Toll Free Tel: 866-704-2247
Tel: 203-393-0010
Fax: 203-393-1684
Email: request info ()
Web: www.laticretesupercap.com
[ Click Here ] for additional information.
Laticrete is the world leader in high strength, shock and weather resistant installation systems for ceramic tile, pavers, brick, and stone. For over 50 years, Laticrete International has provided the technology and products to make innovative, permanent installations. Laticrete materials are designed to perform as a system, with fully compatible products for surface preparation, waterproofing, adhesives, and grouting to ensure single source responsibility.
 
PART 1 GENERAL
 
1.1
SECTION INCLUDES
 
** NOTE TO SPECIFIER **This is the recommended guide specification for LATICRETE SUPERCAP Underlayments; pumpable and/or pourable, low-alkali, premium self-leveling underlayments used to finish concrete slabs and/or level uneven floor surfaces. Apply them over concrete, wood and other types of sound flooring before installing wood, resilient, cork, sports, ceramic, stone, carpet or other flooring systems. Floor covering adhesives that are suitable for concrete can be used on LATICRETE SUPERCAP Underlayments. If necessary, LATICRETE SUPERCAP Moisture Vapor Control Coating can be applied prior to installation of the cement underlayment topping, to help the system achieve Moisture Mitigation requirements needed for finish flooring. Delete items below not required for project.
 
A.
Pumpable and pourable, low-alkali, cement-based, self-leveling underlayment system:
1.
LATICRETE SUPERCAP SC500, SC500-LW and SC500-PLUS Self-Leveling Cement Underlayments.
2.
LATICRETE SUPERCAP Primer Plus.
3.
LATICRETE SUPERCAP Moisture Vapor Control Coating.
1.2
RELATED SECTIONS
 
** NOTE TO SPECIFIER ** Delete any sections below not relevant to this project; add others as required.
 
A.
Section 03 30 00 - Cast-in-Place Concrete.
B.
Section 06 11 16 - Mechanically Graded Lumber.
1.3
REFERENCES
 
** NOTE TO SPECIFIER ** Delete references from the list below that are not actually required by the text of the edited section.
 
A.
American Concrete Institute (ACI) 117 - Standard Specifications for Tolerances for Concrete Construction and Materials.
B.
American Concrete Institute (ACI) 318 - Building Code Requirements for Structural Concrete and Commentary.
C.
ASTM International (ASTM):
1.
ASTM C 1077 - Standard Practice for Agencies Testing Concrete and Concrete Aggregates for Use in Construction and Criteria for Testing Agency Evaluation.
2.
ASTM C1583 - Standard Test Method for Tensile Strength of Concrete Surfaces and the Bond Strength or Tensile Strength of Concrete Repair and Overlay Materials by Direct Tension (Pull-off Method).
3.
ASTM C1708 - Standard Test Methods for Self-leveling Mortars Containing Hydraulic Cements.
4.
ASTM E 329 - Standard Specification for Agencies Engaged in Construction Inspection, Testing, or Special Inspection.
5.
ASTM F2170 - Standard Test Method for Determining Relative Humidity in Concrete Floor Slabs Using in situ Probes.
6.
ASTM F3010 - Standard Practice for Two-Component Resin Based Membrane-Forming Moisture Mitigation Systems for Use Under Resilient Floor Coverings
D.
International Concrete Repair Institute (ICRI):
1.
ICRI Guideline No. 03739 - Field Applications of In-Situ Tensile Pull-Off Tests.
2.
ICRI Guideline No. 03732 - Selecting and Specifying Concrete Surface Preparation for Coatings, Sealers, and Polymer Overlays.
E.
Underwriter's Laboratory (UL) 2818 - Greenguard - Certification Program for Chemical Emissions for Building Materials, Finishes and Furnishings.
1.4
SYSTEM DESCRIPTION
A.
A pumpable and pourable, low-alkali, cement-based, self-leveling underlayment based on a proprietary mineral binder system that shall be used to finish concrete and level uneven floor surfaces. The underlayment shall be capable of placement over concrete, wood and other types of sound flooring before installing wood, resilient, cork, sports, ceramic, stone, carpet or other flooring systems. Floor covering adhesives that are suitable for concrete shall be suitable for use on the underlayment.
1.5
SUBMITTALS
A.
Submit under provisions of Section 01 30 00 - Administrative Requirements.
B.
Product Data: Manufacturer's data sheets on each product to be used, including:
1.
Preparation instructions and recommendations.
2.
Storage and handling requirements and recommendations.
3.
Installation methods.
 
** NOTE TO SPECIFIER ** Delete if not required.
 
C.
Submittal Requirements: Submit the following "Required LEED Criteria" certification items as listed below. Refer to Division 1 for additional requirements:
1.
A completed LEED Environmental Building Materials Certification Form. Information to be supplied generally includes:
a.
Manufacturing plant locations for tile installation products.
b.
LEED Credits as listed in "LEED Credit Submittals"
c.
Recycled content; pre-consumer or post-consumer; or; Project specific information gathered using the LATICRETE LEED Project Certification Assistant available at www.laticrete.com/green.
2.
UL GREENGUARD Certification Program For Chemical Emissions For Building Materials, Finishes And Furnishings, UL 2818 or UL GREENGUARD Gold certificates provided by the tile installation materials manufacturer on UL GREENGUARD letterhead stating "This product has been UL GREENGUARD Gold Product Certified For Low Chemical Emissions by the UL Environment under the UL GREENGUARD Certification Program For Chemical Emissions For Building Materials, Finishes And Furnishings" for each tile installation product used to verify Low VOC product information.
3.
Contractor's certification of LEED Compliance: Submit Contractor's certification verifying the installation of specified LEED Compliant products.
4.
Product Cut Sheets for all materials that meet the LEED performance criteria. Submit Product Cut Sheets with Contractor or Sub-contractor's stamp, as confirmation that submitted products were installed on Project.
5.
Material Safety Data Sheets for all applicable products.
D.
Submit proof of warranty.
E.
Submit Health Product Declarations (HPD) for each tile installation material.
1.6
QUALITY ASSURANCE
A.
Manufacturer Qualifications: Minimum 5 year experience manufacturing similar products.
B.
Installer Qualifications: Minimum 2 year experience installing similar products.
 
** NOTE TO SPECIFIER ** Contact LATICRETE SUPERCAP at +1.866.704.2247 for the name of your local sales representative who can provide names of qualified applicators.
 
C.
Installation of LATICRETE SUPERCAP Underlayments shall be by a qualified applicator using specialized mixing equipment and tools approved by the manufacturer.
D.
Testing Agency Qualifications: If required, secure an independent agency qualified according to ASTM C 1077 and ASTM E 329 for testing indicated, as documented according to ASTM E 548.
E.
Environmental Performance Requirements: The following criteria are required for products included in this section.
1.
Refer to Division 1 for additional requirements:
a.
Products manufactured regionally within a 100 mile radius of the Project site;
b.
Adhesive products shall meet or exceed the VOC limits of South Coast Air Quality Management District Rule (SCAQMD) #1168 and Bay Area Air Quality Management District (BAAQMD) Reg. 8, Rule 51.
 
** NOTE TO SPECIFIER ** Include a mock-up if the project size and/or quality warrant taking such a precaution. The following is one example of how a mock-up on a large project might be specified. When deciding on the extent of the mock-up, consider all the major different types of work on the project.
 
F.
Mock-Up: Provide a mock-up for evaluation of surface preparation techniques and application workmanship.
1.
Place mockups of LATICRETE SUPERCAP Underlayment of approximately 100 sq. ft. (9.3 sq. m.) to demonstrate typical joints, surface finish, bonding, texture, tolerances, and standard of workmanship.
2.
Do not proceed with remaining work until workmanship is approved by Architect.
3.
Refinish mock-up area as required to produce acceptable work.
G.
Underlayment is a cement-based product and may exhibit slight variations in color as a function of job-site conditions. Water-marks similar to veins in stone are a natural result of a pour/spread/smooth installation process.
1.7
PRE-INSTALLATION MEETINGS
A.
Preinstallation Conference: Conduct conference at Project site to comply with requirements in Division 01.
1.8
DELIVERY, STORAGE, AND HANDLING
A.
Deliver materials in their unopened packages and protect from moisture. Protect liquids from freezing and from excessive heat. Store off the floor on dry pallets or equivalent. LATICRETE SUPERCAP SC500, SC500-LW and SC500-PLUS materials are packaged in bulk sacks and shall be used within 6 months of the date of manufacture. LATICRETE SUPERCAP SC500 is additionally packaged in 50 LB plastic bags and shall be used within one year of the date of manufacture.
B.
Use all means necessary to protect the materials before, during and after installation and to protect the installed work and materials of all other trades.
1.9
PROJECT CONDITIONS
A.
Observe the basic rules of concrete placement and finishing. Substrate temperature shall be a minimum of 40 degrees F (4 degrees C) during the application and the ambient temperature maintained at 50 degrees to 90 degrees F (10 degrees to 32 degrees C).
B.
Follow hot weather precautions available from manufacturer's Technical Service Department.
C.
Never mix with cement or additives other than manufacturer's approved products.
D.
During application and curing underlayment shall not be exposed to rapid air movement from mechanical conditioned air. Air flow from HVAC systems in areas of application shall be directed away from the floor during application of underlayment and at least 24 hours after work is completed.
E.
Foot traffic of any kind shall not be allowed in the work area from commencement of substrate preparation until a minimum 24 hours after completion of finishing.
1.10
SEQUENCING
A.
Ensure that products of this Section are supplied to affected trades in time to prevent interruption of construction progress.
 
** NOTE TO SPECIFIER ** Consult Technical Services at +1.866.704.2247 for average depths over 1-1/2 inches (38 mm).
 
B.
Finished floor goods may be installed as soon as one day after application, subject to thickness, drying conditions and type of flooring materials. Always refer to finished floor manufacturer's recommendations regarding installation instructions, restrictions, moisture conditions and compatibility. Always test performance suitability and compatibility of finished floor systems prior to their application. Sample surfaces shall be installed as a field test so as to be representative of entire surface and tested for intended use.
1.11
WARRANTY
 
** NOTE TO SPECIFIER ** Reference LATICRETE Warranty Data Sheet LSC-DS030.10S for complete details and requirements.
 
A.
The Contractor warrants the Work of this Section to be in accordance with the Contract Documents and free from faults and defects in materials and workmanship for a period of 10 years. The underlayment manufacturer shall provide a written ten year warranty, which covers materials and labor.
 
** NOTE TO SPECIFIER ** Reference LATICRETE Warranty Data Sheet LSC-DS230.25S for complete details and requirements. Delete if not required.
 
B.
For installations complying with Premium LATICRETE Tile & Stone Installation Systems, as manufactured by LATICRETE INTERNATIONAL, Inc., the underlayment manufacturer shall provide a written twenty-five year warranty, which covers materials and labor.
PART 2 PRODUCTS
 
2.1
MANUFACTURERS
A.
Acceptable Manufacturer: LATICRETE SUPERCAP, LLC, which is located at: 1 LATICRETE Park N.; Bethany, CT 06524-3423; Toll Free Tel: 866-704-2247; Tel: 203-393-0010; Fax: 203-393-1684; Email: request info (); Web: www.laticretesupercap.com
 
** NOTE TO SPECIFIER ** Delete one of the following two paragraphs; coordinate with requirements of Division 1 section on product options and substitutions.
 
B.
Substitutions: Not permitted.
C.
Requests for substitutions will be considered in accordance with provisions of Section 01 60 00 - Product Requirements.
1.
For alternate materials, at least thirty days before bid date submit independent laboratory test results confirming compliance with specified products performance and requirements.
 
** NOTE TO SPECIFIER ** LATICRETE SUPERCAP SC500 and SC500-PLUS is to be applied at 1/4 inch to 1-1/2 inches (6 mm to 38 mm) average depth. LATICRETE SUPERCAP SC500-LW can be installed up to 4 inches (102 mm) depth. Consult Technical Services at +1.866.704.2247 for average depths over 1-1/2 inches (38 mm).
 
2.2
MATERIALS - BASIS OF DESIGN
A.
Calcium Aluminate Based Self-Leveling Cement Underlayment: LATICRETE SUPERCAP SC500 as manufactured by LATICRETE International, Inc.
B.
Calcium Aluminate Based Self-Leveling Cement Underlayment - Light Weight: LATICRETE SUPERCAP SC500-LW as manufactured by LATICRETE International, Inc.
C.
Calcium Aluminate Based Self-Leveling Cement Underlayment - High Strength: LATICRETE SUPERCAP SC500-PLUS as manufactured by LATICRETE International, Inc.
D.
Underlayment Primer: LATICRETE SUPERCAP Primer Plus as manufactured by LATICRETE International, Inc.
E.
Moisture Vapor Control (Moisture Mitigation): LATICRETE SUPERCAP Moisture Vapor Control as manufactured by LATICRETE International, Inc.
F.
Water: Clean, Potable, and Cool.
2.3
MIX DESIGNS
A.
LATICRETE SUPERCAP SC500 is supplied in bulk supersacks and 50 lb (22.7 kg) bags.
B.
LATICRETE SUPERCAP SC500-LW and SC500-PLUS are supplied in bulk supersacks only.
C.
Super Sacks - Pre-condition LATICRETE SUPERCAP underlayment materials to approved application temperature, typically between 50 to 90 degrees F (10 to 32 degrees C). Materials for LATICERETE SUPERCAP SC500, LATICRETE SUPERCAP SC500-LW and LATICRETE SUPERCAP SC500-PLUS shall be blended by qualified LATICRETE SUPERCAP Applicators with the mobile blending unit that mixes LATICRETE SUPERCAP underlayment materials onsite at street level to manufacturer specifications.
1.
Mix bulk sacked, engineered materials and water, utilizing computerized remote-controlled, self-contained mobile blending units, precisely weighing and mixing materials into a uniformly consistent, highly fluid mixture.
2.
Utilize established recipes (mix designs) programmed into computer controlled batch mixing procedure to achieve the specified fluid consistency for mobile blending unit delivery to placement areas.
D.
50 lb (22.7 kg) Bags: Pre-condition LATICRETE SUPERCAP SC500 to approved application temperature, between 50 to 90 degrees F (10 to 32 degrees C). Add the entire bag to 3.7 quarts (3.5 L) of clean, cool water and mix with a high speed drill (650 RPM). CAUTION: DO NOT OVER WATER OR OVER MIX. OVER WATERING WILL CAUSE BLEEDING OR SAND SEGREGATION. Mix thoroughly for approximately 1-1/2 to 2 minutes to obtain a uniform, lump-free consistency; scrape container's sides and remix to incorporate remaining powder. If a multiple bag mix is performed, additional mix time may be required to obtain a lump-free, uniform mix.
PART 3 EXECUTION
 
3.1
GENERAL
 
** NOTE TO SPECIFIER ** Refer to LATICRETE SUPERCAP SC500, LATICRETE SUPERCAP SC500-LW, LATICRETE SUPERCAP SC500-PLUS, LATICRETE SUPERCAP Primer Plus, and optional LATICRTE SUPERCAP MVC product data sheets at www.laticretesupercap.com for current product installation instructions.
 
A.
Concrete Slab Finishing shall be in accordance with ACI 117 (Straight Edge Method).
B.
Provide ventilation to promote curing and reduce humidity.
C.
Do NOT install underlayment over moving cracks in substrate.
3.2
INSPECTION
A.
Verify that installed work of other trades is complete to the point where work of this Section may properly commence.
B.
Verify conformance to Field Conditions specified by this Section and to manufacturer instructions.
C.
Examine the areas and conditions where the Underlayment is to be installed and notify the Architect of conditions detrimental to the proper and timely completion of the work. Verify that substrate surfaces are protected from weather, wind, water and clean, dry, unfrozen, do not contain petroleum byproducts, or other compounds detrimental to underlayment material bond to substrate. Do not proceed with the work until unsatisfactory conditions are corrected to permit proper installation of the work.
D.
Beginning work constitutes acceptance of site conditions and responsibility for defective installation caused by prior observable conditions.
3.3
PREPARATION
 
** NOTE TO SPECIFIER ** Some cast underlayment systems allow use of a cold, liquid-applied moisture barrier beneath cast underlayment. Consult underlayment manufacturer for specific installation recommendations when these systems are required. Delete below references to these systems when not required on project.
 
A.
Substrate Finishing or Remedial Method for Cast Underlayment:
 
** NOTE TO SPECIFIER ** SUBSTRATE PREPARATION - Refer to TDS-230S - LATICRETE SUPERCAP - Substrate Preparation and Primer Guide, available at www.laticretesupercap.com
 
1.
Concrete:
a.
New Slab: Bull Float to minimum FF15. No finishing or hard trowelling is needed prior to LATICRETE SUPERCAP underlayment application.
b.
Existing Slab: Evaluate and determine whether substrate needs to be mechanically prepared to ICRI CSP-3 by shot-blasting, scarification, or other treatments performed as instructed by manufacturer.
c.
Weak or Contaminated Surfaces: Mechanically clean to ICRI CSP-3 by shot blasting, scarifying or sanding. If the substrate surface is suspected of having bond breakers core testing of the slab is recommended to confirm depth and type of contamination.
d.
Do not acid etch or use chemicals to clean the substrates.
2.
Wood:
a.
Verify the wood substrate is stable and structurally sound enough to support all total anticipated live, dead and impact loads.
b.
Wood substrates shall be clean and free of any contaminants. Substrates can be sanded if necessary, then swept, vacuumed and properly primed.
c.
If required for leakage control, install 6 mil (0.15 mm) thick polyethylene sheeting, overlapping by 6 inches (152 mm) and taping seams. Affix using staple or equivalent mechanical fastener.
d.
Fasten galvanized diamond metal lath over entire substrate using corrosion resistant fasteners every 6 inches (152 mm) overlapping lath seams by 1 inch (25 mm).
3.
Existing Finishes:
a.
Verify the substrate and construction below existing finishes does not exceed industry deflection standards under all live, dead and impact loads for the type of finish flooring being installed.
b.
Acceptable existing floor finishes include Vinyl Tile, Cement Terrazzo, Ceramic Tile & Stone, and Cement Mortar Beds.
c.
Existing vinyl, vinyl asbestos tile, linoleum or ceramic tile shall be firmly bonded to a rigid substrate. Note that cushioned vinyl will not properly support tile. Sheet vinyl or linoleum shall be fully adhered.
d.
Surface Preparation:
1)
Clean surface to remove grease, wax, oil or other contamination;
2)
Scrub with Tri-sodium Phosphate (TSP) solution or electric dishwasher detergent and hot water;
3)
After scrubbing surface with cleaning solution, rinse with clean water and allow to dry.
4)
Follow manufacturer's current priming instructions in TDS 230S, available on www.laticretesupercap.com.
4.
Cleaning:
a.
Remove dirt, wax, sealers, curing compounds, efflorescence, and other unsuitable surface conditions not part of concrete matrix that may inhibit the underlayment bond to the surface.
b.
Broom clean and vacuum surfaces to pick up remaining dust and debris.
c.
Where removal of existing bond breaking substances is impractical, conform to manufacturer's instructions for application of bonding agent before installation of Cementitious underlayment.
1)
Do not install Cementitious underlayment directly over mastics and other bond breaking substances.
5.
All cracks in the subfloor shall be repaired to minimize telegraphing through the Underlayment.
6.
Substrate temperature shall be a minimum of 40 degrees F (4 degrees C) during the application and the ambient temperature maintained at 50 degrees to 90 degrees F (10 degrees to 32 degrees C).
7.
Concrete slabs shall be tested and measure less than 95% relative humidity (RH) per ASTM F2170 prior to installation of LATICRETE SUPERCAP self-leveling underlayment. If 95% RH or greater is measured contact LATICRETE SUPERCAP technical support. Do not install LATICRETE SUPERCAP products when there is standing water or visible moisture on the slab. It is important to note that concrete slabs may be dry enough to successfully install LATICRETE SUPERCAP products; however, concrete slab may not be dry enough to meet moisture conditions required for finish flooring.
8.
Concrete slabs shall be tested for appropriate moisture conditions in accordance with the finish flooring manufactures specifications prior to installing LATICRETE SUPERCAP. LATICRETE SUPERCAP primer and self-leveling underlayments are not moisture mitigation systems. When a moisture mitigation system is needed use LATICRETE SUPERCAP Moisture Vapor Control. Refer to Moisture Mitigation System section and DS- 061.0 for more information.
9.
Surface bond strength of the substrate shall be no less than 100 PSI (0.7 MPa) per ASTM C1583 or ICRI Guideline No. 03739 for the application of all LATICRETE SUPERCAP SC500. Weak or contaminated surfaces shall be mechanically cleaned by shot blasting, scarifying or sanding. Never use chemicals to clean the substrate. If installing LATICRETE SUPERCAP Moisture Vapor Control, per ASTM F3010, concrete slab to receive LATICRETE SUPERCAP Moisture Vapor Control shall have a tensile pull-off strength of 200 PSI (1.4 MPa) or greater when tested in accordance with ASTM C1583.
10.
LATICRETE SUPERCAP Moisture Vapor Control (as required): Apply to concrete substrates using squeegee and paint roller achieving a minimum thickness of 12 mils (0.3 mm). If required to meet ASTM F3010, then LATICRETE SUPERCAP Moisture Vapor Control SHALL be a minimum 16 mil (0.40 mm) thickness. LATICRETE SUPERCAP Moisture Vapor Control is only approved for concrete substrates.
11.
Containment: Close and seal floor openings and install dams at edges of floor area to receive treatment as necessary to contain self-leveling underlayment while in plastic state.
12.
Concrete Floor Flatness and Floor Levelness Benchmarks: Use a digital level device to determine elevations on a 4x4 foot grid, depending on tolerances, to establish and set self-adhering LEVEL PEGS at heights to indicate installation depths and top surface of underlayment application or other approved method.
13.
Joint Preparation:
a.
Expansion and Isolation Joints: Honor through underlayment by marking with screws or similar and saw cutting after self-leveling application.
b.
Static (Non-Moving) Saw Cuts and Control Joints: Fill with joint sealer under provisions of Section 03 30 00 - Cast-in-Place Concrete.
c.
Other Static (Non-Moving) Joints: Patch and repair using Cementitious patching product.
d.
Dynamic (Active) Cracks: Bring to Architects attention for direction.
14.
Priming:
a.
Maintain adequate ventilation during and following primer application to promote faster drying.
1)
Insufficient drying time, low temperatures, and high humidity may result insufficient drying, poor film formation, and pinholes in surface.
2)
Do not apply at surface temperatures below 40 degrees F (4 degrees C).
b.
LATICRETE SUPERCAP Primer Plus: Dilute primer concentrate with water according to the ratios given in LATICRETE SUPERCAP Primer Plus Data Sheet.
1)
Apply to substrates using stiff broom, roller or spray as instructed by manufacturer.
2)
Roll, spray, or broom to uniform film thickness over prepared substrate. Avoid puddling and allow surface film to become dry to touch, typically 3 to 5 hours after application. For best results, and while primer is still fresh, it shall be lightly brushed to ensure a complete, uniform film has been applied.
3.4
INSTALLATION OF UNDERLAYMENT
A.
Install underlayment in accordance with manufacturer's instructions, and after installation of moisture vapor mitigation (if needed) and underlayment primer.
B.
Mixing: Measure components and mechanically mix, as recommended by the manufacturer.
C.
Substrate temperature shall be a minimum 40 degrees F (4 degrees C) during application and air temperature maintained between 50 to 90 degrees F (10 to 32 degrees C). Protect areas from direct sunlight and exposure to weather.
D.
Pump or pour LATICRETE SUPERCAP SC500 and LATICRETE SUPERCAP SC500-PLUS onto substrate at an average thickness ranging from 1/4 inch to 1-1/2 inches (6mm to 38 mm) for all surfaces. LATICRETE SUPERCAP SC500-LW may be placed onto substrate up to 4 inches (102 mm) in thickness. Wood substrates require a minimum thickness of 3/4 inch (19 mm).
E.
Immediately following placement lightly smooth the surface and pour lines. When not using level pegs the use of a gauge rake will assist in controlling material depth.
F.
Adequate ventilation shall be provided to ensure uniform drying.
G.
Do not expose LATICRETE SUPERCAP SC500, LATICRETE SUPERCAP SC500-LW or LATICRETE SUPERCAP SC500-PLUS to rolling dynamic loads, such as forklifts or scissor lifts, for at least 72 hours after installation.
H.
Proper application is the responsibility of the user.
1.
Place underlayment before partition installation if construction schedule allows.
I.
If a fine, feathered edge is desired, steel trowel the edge after initial set, but before it is completely hard.
3.5
CURING
A.
Once underlayment starts to set, prohibit foot traffic until final set has been reached.
B.
Air cure in accordance with manufacturer's instructions.
C.
Provide continuous ventilation and adequate heat until walkable; provide mechanical ventilation if necessary.
D.
Remove and replace underlayment areas that evidence lack of bond with substrate, including areas that emit a "hollow" sound when tapped.
E.
Do not install floor coverings over underlayment until all conditions required by the floor covering manufacturer have been met. Floor covering manufacturer's requirements may vary greatly.
3.6
PROTECTION
A.
Protect against direct sunlight, heat, and wind; prevent rapid drying to avoid shrinkage and cracking during the curing process.
B.
Protect underlayment from traffic as follows:
1.
Do not permit foot traffic over underlayment surfaces for 2 to 4 hours, 24 hours for trade traffic.
2.
Do not permit trade vehicle traffic for 48-hours.
3.
Standing water is to be removed by squeegee or other acceptable method daily.
 
** NOTE TO SPECIFIER ** Field visits by LATICRETE SUPERCAP personnel are for the purpose of making technical recommendations only and not for supervising or providing quality control on the jobsite.
 
3.7
FIELD QUALITY CONTROL
A.
Field flow tests shall be performed on site periodically to ensure mix is homogeneous and free from separation.
B.
Provide written reports to Architect.
3.8
PROTECTION
A.
Protect installed products until completion of project.
B.
Touch-up, repair or replace damaged products before Substantial Completion.
END OF SECTION