Installation Guide

MegaLite®RSUltimateRapidSettingCrackPreventionLargeFormatTileMortar/TDS120
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.
When setting moisture sensitive natural stone, cement or agglomerate
tileuseEBMLite™EpoxyBondingMortar100%SolidsorCEGLite™
100% Solids Commercial Epoxy Grout.
DonotusetoinstallresinbackedstoneuseEBMLite™EpoxyBonding
Mortar100%Solids,CEGLite™100%SolidsCommercialEpoxyGrout
orcontactCustom's®TechnicalServicesforrecommendations.
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.
Packaging
30 lb (13.6 kg) bag
Gray or white
4 Technical Data
Applicable Standards
American National Standards Institute (ANSI) - ANSI A108.5, A118.4,
A118.15 and A118.11 of the American National Standards for the
Installation of Ceramic Tile
ISO 13007-2
ASTM International (ASTM)
ASTM C109 Standard Test Method for Compressive Strength of
Hydraulic Cement Mortars (Using 2-in. or [50-mm] Cube Specimens)
ASTM C627 Standard Test Method for Evaluating Ceramic Floor Tile
Installation Systems Using the Robinson-Type Floor Tester
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 Requirement Typical Results
Pot Life 40 - 60 Minutes
Open
Time
A118.15
Section 5.3
> 20 Minutes Pass
4 Week Shear Bond Strength
Glazed
Wall Tile
A118.15
Section 7.1.2
> 450 psi 725 - 850 psi
(51.059.8kg/cm²)
Porcelain
Tile
A118.15
Section 7.2.5
> 400 psi 650 - 725 psi
(45.751.0kg/cm²)
Quarry
Tile to
Plywood
A118.11
Section 4.1.2
> 150 psi 350 - 425 psi
(24.629.9kg/cm²)
Sag on
Walls
A118.4
Section 4.6
< 1/16" Pass
Environmental Consideration
Custom®BuildingProductsiscommittedtoenvironmental
responsibility in both products produced and in manufacturing
practices.UseofthisproductcancontributetowardsLEED®v3
certification:
Up to 2 points towards MR Credit 5, Regional Materials
Up to 2 points towards MR Credit 4, Recycled Content
Upto1pointtowardsIEQCredit4.1,LowEmittingMaterials–
Adhesives & Sealants
5 Instructions
General Surface Prep
USE CHEMICAL-RESISTANT GLOVES, such as nitrile,
when handling product.
Surfaces must be structurally sound. Remove all grease, oil, dirt,
curing compounds, sealers, adhesives or any other contaminant that
would prevent a good bond. Glossy or painted surfaces must be
sanded, or abraded, and stripped of all 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 coarse finish to enhance the bond. Plywood
flooring including those under resilient flooring must be structurally
soundand 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 scarified. Sheet vinyl must be well bonded and stripped of
old finish. Roughen the surface by sanding or abrading, then rinse and
allow to dry. Expansion joints should never be bridged with setting
material. Do not sand flooring materials containing asbestos. Ambient
temperatureshouldbemaintainedabove50°F(10°C)orbelow100°
F(38°C)for72hourstoachieveproperbond.
Bonding to Concrete 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 coarse finish to
enhance the bond. Smooth concrete slabs must be mechanically
abraded to achieve proper bond.
Bonding to Lightweight Cement and Gypsum Surfaces
Lightweight or gypsum based underlayments must obtain a minimum
2000 psi (13.8 MPa) compressive strength. The underlayment must be
sufficientlydryandproperly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. Surfaces shall be free of all grease, oil,
dirt, dust, curing compounds, waxes, sealers, efflorescence, or any
other foreign matter.
MegaLite®RSUltimateRapidSettingCrackPreventionLarge
Format Tile Mortar
Published Date: 4/11/2018