Specification

TILING 09 30 00 Surface Prep / TDS-234
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 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 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.
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 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.
Expansion Joint placement
Expansion joints and cold joints, as described in ANSI A108.01, should
never be bridged with setting material. They must be brought through
the tile work and filled with an appropriate elastomeric sealant, such
asCustom's®100%Silicone.ContactCustom'sTechnicalServicesfor
the proper treatment of control or saw cut joints. Refer to TCNA
EJ171, F125 & F125A.
Application of Product
Apply with a paint brush, short nap roller or a soft push broom. Apply
a thin, even coat and allow to dry to a clear film before applying
LevelQuik®orLevelLite®SelfLevelingUnderlayments.
Cleaning of equipment
Clean with water before the material dries.
Storage
Store in a cool dry area. Keep from freezing.
Health Precautions
Contains acrylic emulsion. Wear rubber gloves and eye protection.
Avoid eye contact or prolonged contact with skin. Wash thoroughly
after handling. If eye contact occurs, flush with water for 15 minutes
and consult a physician. If skin contact occurs, wash immediately with
soap and water. Dried material is extremely difficult to remove. KEEP
OUT OF REACH OF CHILDREN. DO NOT TAKE INTERNALLY.
Conformance to Building Codes
Installation must comply with the requirements of all applicable local,
state and federal code jurisdictions.
6 Availability & Cost
Location Item Code Size Color Package
USA CPQT 1 quart (.946 L) White Bottle
USA CP1 1 gallon (3.78 L) White Bottle
Canada CCPQT 1 quart (.946 L) White Bottle
Canada CCP1 1 gallon (3.78 L) White Bottle
LevelQuik®LatexPrimer
Published Date: 3/19/2014