Specification

TILING 09 30 00 Setting / TDS-120
Technical Chart
Property Test Method Requirement Typical Results
Pot Life 40 - 60 Minutes
Open Time A118.4
Section 4.4
> 50
Minutes
> 20 Minutes
Adjustment Time A118.4
Section 4.5
> 30
Minutes
> 20 Minutes
4 Week Shear
Bond Strength
Glazed Wall Tile A118.4
Section 5.1.5
> 300 psi 725 - 850 psi
(51.0 - 59.8
kg/cm²)
Porcelain Tile A118.4
Section 5.2.4
> 200 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"
Environmental Consideration
Custom®BuildingProductsiscommittedtoenvironmental
responsibility in both products produced and in manufacturing
practices.Useofthisproductcan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/gal (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.
Bonding to Plywood Surfaces
Plywood floors, including those under resilient flooring, must be
structurally sound and must meet all ANSI A108.01 Part 3.4
requirements. See TCNA F150. For questions about proper subfloor
installation,callCustom®BuildingProducts.
Bonding to Wonderboard Backerboards
Asanalternativetoanadditionallayerofplywood,WonderBoard©
backerboard may be installed over plywood subfloors. Refer to TCNA
F144.
Bonding to Existing Surfacing Material
Resilient flooring or plastic laminates must be well-bonded, as well as
clean and free of all contaminates. Roughen the surface by sanding or
scarifying; rinse and allow to dry. Do not sand flooring that contains
asbestos. For existing well-bonded ceramic tile, mechanically abrade
the surface. Rinse and allow to dry. When sanding, an approved
respirator should be used.
Bonding to Cutback Adhesive
Adhesive layers must be removed, as they reduce mortar bond
strength to cement surfaces. Use extreme caution; adhesives may
contain asbestos fibers. Do not sand or grind adhesive residue, as
harmful dust may result. Never use adhesive removers or solvents, as
they soften the adhesive and may cause it to penetrate into the
concrete. Adhesive residue must be wet-scraped to the finished
surface of the concrete, leaving only the transparent staining from the
glue. To determine desirable results, do a test bond area before
starting. Refer to the RFCI Pamphlet, "Recommended Work Practices
for Removal of Resilient Floor Coverings", for further information.
MegaLite®RapidSettingCrackPreventionMortar
Published Date: December 13 2012