LATICRETE INTERNATIONAL, INC.
1 LATICRETE Park North
Bethany, CT 06524-3423 USA
Tel: (203) 393-0010
Toll-Free: (800) 243-4788
Fax: (203) 393-1684
E-mail: technicalservices@laticrete.com
Web site: http://www.laticrete.com


LATAPOXY^® 312 Vapor Reduction Membrane

PRODUCT DESCRIPTION

LATAPOXY 312 Vapor Reduction Membrane is a 3 component, roller applied epoxy coating specifically designed to reduce vapor emission in substrates for various floor coverings.

• Used over concrete substrates to reduce vapor to below 3 lbs/1000 ft²/24hr (170 µg/(s m²) when tested in accord with ASTM F–1869 "Standard Test Method" for Moisture Vapor Emission Rate using Anhydrous Calcium Chloride.
• Ideal for slab on grade construction.
• Can be used in conjunction with LATICRETE^® LatiLevel^™ underlayments.
• Allows the installation of vinyl, wood, epoxy, ceramic tile, stone and other floor coverings.

• Easy to use- rolls on like paint
• Cures in 24 hours

• Concrete slabs

• 3-1/2 gallon (13.2 l) bucket (used for mixing)
• 2 part A @ 2.0 lb (0.9 kg)
• 1 part B @ 2.6 lb (1.2 kg)
• 7 lb (3.2 kg) part C powder
• 13.6 lb (6.2 kg) per unit
• 48 units per pallet

Each full unit will yield approximately 220 ft² (21 m²) per unit

Factory sealed containers of this product are guaranteed to be of first quality for two (2) years if stored at temperatures >32°F (0°C) and <110°F (43°C).

• Adhesives/mastics, mortars and grouts for ceramic tile, pavers, brick and stone are not replacements for waterproofing membranes. When a waterproofing membrane is required, use a LATICRETE Waterproofing Membrane (see Section 10 FILING SYSTEM).
• Note: Surfaces must be structurally sound, stable and rigid enough to support ceramic/stone tile, thin brick and similar finishes. Substrate deflection under all live, dead and impact loads, including concentrated loads, must not exceed L/360 for thin bed ceramic tile/brick installations or L/480 for thin bed stone installations where L=span length.
• Not for use over any other substrates besides fully cured concrete slabs (min. 14 days at 70°F (21°C)
• Water based, do not allow to freeze.
• LATICRETE is not responsible for moisture emissions from expansion and isolation joints, existing cracks, or new cracks that may develop after the system has been installed.

• Conduct Calcium Chloride tests per ASTM F1869 prior to and subsequent to installation of LATAPOXY 312 Vapor Reduction Membrane.
• Consult with adhesive manufacturer for compatibility with LATAPOXY 312 Vapor Reduction Membrane
• During cold weather, protect finished work from traffic until fully cured.
• Product performance contingent upon proper completion of ASTM F–1869 by certified testing personnel. Test must be performed as per test manufacturers written installation instructions.
• Keep out of reach of children

Applicable Standard

EN12004-1997

Working Properties

INSTALLATION

For the LATICRETE warranty to apply, the LATAPOXY^® 312 Vapor Reduction Membrane Pre-Installation Questionnaire T-1541 must be completely filled out and filed with LATICRETE Technical Service.

• Surface temperature must be 45–90°F (7–32°C) during application and for 24 hours after installation.
  
  All substrates must be structurally sound, clean and free of dirt, oil, grease, paint, laitance, efflorescence, concrete sealers or curing compounds. Surfaces treated with form release agents or other bond inhibiting contaminants must be properly shot or bead blasted to ensure all contaminants are removed. Make rough or uneven concrete smooth to a wood float or better finish with a LATICRETE^® underlayment. Do not level with gypsum or asphalt based products.
  
  Mechanical scarification, shot or bead blasting of the surface is required to obtain an ICRI profile of CSP 3. The prepared surface must be allowed to breath for a minimum of 24 hours, and have a tensile strength of at least 200 psi (1.4 Mpa) when tested in accordance with ASTM D4541, Method 5. Acid etching, solvents, sweeping compounds, and sanding equipment are not acceptable means of cleaning the substrate.
  
  Prior to installing, prepare the concrete as described above and measure the moisture emission levels in accordance with the Calcium Chloride Method (ASTM F1869). To install LATAPOXY 312 Vapor Reduction Membrane, the level of moisture emissions from the concrete should not exceed 12 lbs/1000 ft²/24 hr (678 µg/(sm²)) at the time of installation. In all cases, the surface temperature of the prepared concrete slab must be warm enough to avoid condensation on the surface of the concrete as the LATAPOXY 312 Vapor Reduction Membrane cures.
  
  If the concrete substrate is too uneven (typically CSP 6 or higher) to provide a uniform film thickness of the LATICRETE 312 Vapor Reduction Membrane, the substrate can be pre-smoothed using LATICRETE 816 LatiPatch^™ or a skim coat of LATICRETE 254 Platinum. LATICRETE 816 LatiPatch or the skim coat of LATICRETE 254 Platinum must be allowed to cure a minimum of 24 hours at 70°F (21°C) prior to the installation of LATAPOXY 312 Vapor Reduction Membrane.
  
  Maximum deviation in plane must not exceed 1/4" in 10 ft (6 mm in 3 m) with no more than 1/16" in 1 ft (1.5 mm in 0.3 m) variation between high spots. Dampen hot, dry surfaces and sweep off excess water — installation may be made on a damp surface. New concrete slabs should meet the minimum moisture content, as stated above, prior to application of the LATAPOXY 312 Vapor Reduction Membrane.
  
  Before using, store resins at room temperature 70°F (21°C) for 24 hours to ensure ease of mixing.
  
  Treatment for Construction, Control (Saw-Cut), and Cold Joints; Dormant, and shrinkage cracks.
  
  Clean all cracks and joints of all loose debris and elements.
  
  Use LATAPOXY 312 Vapor Reduction Membrane to fill small, non-moving cracks, control joints, construction joints, and cold joints in existing concrete substrates. Cracks up to 1/16" (1.5 mm) in width must be filled with LATAPOXY 312 Vapor Reduction Membrane. Fill non moving, non-structural cracks, control joints, construction joints and cold joints up to 1/4" (6 mm) in width with LATICRETE 254 Platinum
  
  The filling of dormant cracks as described above is recommended to prevent moisture emissions over the entire surface.
  
  Once the cracks have been properly filled, allow these areas to cure for a minimum of 24 hours prior to proceeding with the installation of the LATAPOXY 312 Vapor Reduction Membrane.
  
  Conduct 3 calcium chloride tests per every 1000 ft² (92.9 m²) of surface that are to receive treatment to gauge moisture level. Conduct tests according to instructions. Test should be run within one week of treatment.

Mixing

• Mix all units of Part A and Part B until thoroughly mixed, uniform in color by using mechanical mixer. Add all powder (Part C) and mix until uniformly dispersed into the liquid. Make sure to dispense all liquids from the pouches to assure correct coverage.

Application

• Apply LATAPOXY 312 Vapor Reduction Membrane to the substrate using a 3/8" (9 mm) nap roller. Apply an even coat making sure to cover all areas thoroughly, allow to cure for 24 hours prior to final floor installation.
• Install second coat of LATAPOXY 312 Vapor Reduction Membrane to reduce MVER even lower—conduct test again to determine results.
• If two coats of LATAPOXY 312 Vapor Reduction Membrane are required, allow first coat to dry before applying the second.
• After application of first coat–conduct second round of calcium chloride tests according to manufacturer's instructions to verify moisture level.
• Do not proceed with the installation of the finish flooring if the vapor emission rate exceeds the requirement of the finishing flooring manufacturer.
• If an anti-fracture and/or waterproofing membrane is required use LATICRETE Hydro Ban^™ over the cured LATAPOXY 312 Vapor Reduction Membrane.
• Use LATICRETE 254 Platinum to install ceramic tile or stone.

Moving Joints and Cracks

In no case should expansion joints, isolation joints or moving cracks be filled with this epoxy. All moving joints and cracks must be honored up through the moisture control system, the LATICRETE underlayment or topping, and the floor covering or coating by installing LATICRETE Latasil^™ in the movement joint.

AVAILABILITY AND COST

Availability

LATICRETE^® and LATAPOXY^® materials are available worldwide.

For distributor information:
Toll Free: 1.800.243.4788
Telephone: +1.203.393.0010

For online distributor information, visit LATICRETE at www.laticrete.com.

Cost

Contact a LATICRETE Distributor in your area.

WARRANTY

MAINTENANCE

LATICRETE and LATAPOXY grouts require routine cleaning with a neutral pH soap and water. All other LATICRETE and LATAPOXY materials require no maintenance but installation performance and durability may depend on properly maintaining products supplied by other manufacturers.

TECHNICAL SERVICES

Technical assistance

Technical and safety literature

To acquire technical and safety literature, please visit our website at www.laticrete.com

FILING SYSTEM