Specification

TILING 09 30 00 Surface Prep / TDS-107
Limitations to the Product
Do not bond directly to hardwood, Luan plywood, particle board,
parquet, cushion or sponge-back vinyl flooring, metal, fiberglass,
plastic or OSB panels.
Do not use as a wear surface.
When setting glass tile larger than 6" x 6" (15 x 15 cm), contact
Custom's®TechnicalServicesforrecommendations.
When setting dimensional stone larger than 12" x 12" (30 x 30 cm),
contactCustom's®TechnicalServicesforrecommendationsregarding
subfloor deflection requirements.
Do not use over lightweight concrete or gypsum. Refer to section 5 for
proper installation over these substrates. Do not use on sloped
surfaces that require drainage. Precautions should be taken when
applying over post-tensioned concrete, pre-stressed concrete or
prefabricatedconcreteplanks.ContactCustom®BuildingProductsfor
further details.
Packaging
4 Technical Data
Applicable Standards
ASTM International (ASTM)
ASTM C627 Standard Test Method for Evaluating Ceramic Floor Tile
Installation Systems Using the Robinson-Type Floor Tester
ASTM F1869 Standard Test Method for Measuring Moisture Vapor
Emission Rate of Concrete Subfloor Using Anhydrous Calcium Chloride
American National Standards Institute (ANSI) ANSI A108.01 A108.02 of
the American National Standards for the Installation of Ceramic Tile
Resilient Floor Covering Institute (RFCI) Recommended Work
Practices for Removal of Resilient Floor Coverings
Tile Council of North America (TCNA) TCNA Handbook for Ceramic Tile
Installation, TCNA Method EJ171
Technical Chart
Property Test Method Typical Results
Pot Life 30 Minutes
Flow Time 10 Minutes
Initial Set ASTM C-191 90 Minutes
Final Set ASTM C-191 3-1/2 Hours
Compressive Strength ASTM C-109 4600 psi (3.23 MPa)
Flexural Strength ASTM C-109 1100 psi (7.58 MPa)
Walkable Hardness 2–4Hours
Time Before Installing Floor Covering
Ceramic Tile 4 Hours
Other Floor Covering 14 Hours
Robinson Test ASTM C-627 Extra Heavy
Environmental Consideration
Custom®BuildingProductsiscommittedtoenvironmental
responsibility in both products produced and in manufacturing
practices.UseofthisproductmaycontributetoLEED®certification.
5 Instructions
General Surface Prep
Surfaces must be structurally sound, clean, dry and free from grease,
oil, dirt, curing compounds, sealers, adhesives or any other
contaminant that would prevent a good bond. Glossy or painted
surfaces must be sanded, stripped and cleaned of waxes, dirt or any
contaminants. Concrete must be cured 28 days and accept water
penetration. Concrete must be free of efflorescence and not subject to
hydrostatic pressure. Concrete slabs should have a broomed or
brushed finish to enhance the bond. Plywood flooring including those
under resilient flooring must be structurally sound and meet all ANSI
and deflection requirements. For questions about proper subfloor
installation, call Technical Services. Smooth concrete surfaces, existing
glazed tile, terrazzo, or polished stone should be roughened or
scarified. Sheet vinyl must be well-bonded and stripped of old finish.
Roughen the surface by sanding or scarifying, rinse and allow to dry.
Expansion joints should never be bridged with setting material. Do not
sand flooring materials containing asbestos. Ambient temperature,
surfaces and materials should be maintained at a temperature above
50°F(10°C)orbelow100°F(38°C)for72hours.
Bonding to Cement Surfaces
Concrete or plaster must be fully cured and must accept water
penetration. Test by sprinkling water on various areas of the substrate.
If water penetrates, then a good bond can be achieved; if water
beads, surface contaminants are present, and loss of adhesion may
occur. Contaminants should be mechanically removed before
installation. Concrete must be free of efflorescence and not subject to
hydrostatic pressure. Concrete slabs should have a broomed or
brushed finish to enhance the bond. Smooth concrete slabs must be
mechanically abraded to ensure a good bond.
Bonding to Lightweight Cement and Gypsum Surfaces
Lightweight or gypsum-based underlayments must first be treated with
RedGard®WaterproofingandCrackPreventionMembraneandmust
obtain a minimum 2000 psi (13.8 MPa) compressive strength at the
recommended cure time. The underlayment must be sufficiently dry
and properly cured to the manufacturer's specifications for permanent,
non-moisture permeable coverings. Surfaces to be tiled must be
structurally sound and subject to deflection not to exceed the current
ANSI Standards All lightweight concrete and gypsum-based
underlaymentsurfacestoreceiveRedGard®mustbeprimedwith
properlyappliedsealeroraprimercoatofRedGard®,consistingof1
partRedGard®dilutedwith4partsclean,coolwater.Mixinaclean
bucket at low speed to obtain a lump-free solution. The primer can be
brushed, rolled or sprayed to achieve an even coat. Apply the primer
coat to the floor at a rate of 300 ft/gallon (7.5 M/L). Drying time
depends on site conditions, but is normally less than 1 hour. Extremely
poroussurfacesmayrequire2coats.Atthispoint,RedGard®canbe
applied to the primed lightweight or gypsum-based surface. Refer to
the individual product data sheet or packaging directions for application
instructions. Expansion joints must be installed in accordance with local
building codes and ANSI/TCNA guidelines. Refer to TCNA EJ171.
LevelLite®SelfLevelingUnderlayment
Published Date: 10/17/2013