Installation Guide

Natural Stone & Large Tile Premium Mortar / TDS-309
1 Product Name
Natural Stone & Large Tile Premium Mortar
2 Manufacturer
Custom Building Products
Technical Services
10400 Pioneer Boulevard, Unit 3
Santa Fe Springs, CA 90670
Customer Support: 800-272-8786
Technical Services: 800-282-8786
Fax: [phone]
Email: [e-mail]
custombuildingproducts.com
3 Product Description
A premium quality, polymer-modified mortar for any size natural stone
or large format ceramic or porcelain tile 15" (38 cm) or larger on one
or more sides, clay pavers or other thin or medium bed applications.
With a non-slumping formula that reduces the chance for lippage and
promotes level tile installations, CUSTOM's Natural Stone & Large Tile
Mortar can be applied for horizontal applications as thick as 3/4" (19
mm) or for thin bed applications to 1/4" (6 mm).
This product was formerly named Marble, Granite & Travertine
Premium Mortar.
Key Features
High bond strength
Supports large and heavy tile for flat, even floor installations
Sag and slip resistant - immediately holds wall tiles in place
Suitable Tile Types
Vitreous, semi-vitreous or non-vitreous tile: ceramic, quarry, cement
body tile, pavers
Impervious porcelain
Brick and stone veneer
Cement-based precast terrazzo
Gauged or ungauged natural stone tile
Suitable Substrates
Concrete, mortar beds, masonry, Portland cement plaster
WonderBoard®Lite, cement backerboards
Liquid-applied waterproofing membranes such
as RedGard® Waterproofing and Crack Prevention
Membrane, Custom®9240 and RedGard®SpeedCoat
Crack isolation sheet membranes such as CrackBuster®Pro
Uncoupling mats such as RedGard®UncouplingMat
Substrates treated with MBP Multi-Surface Bonding Primer
Exterior Grade Plywood (interior residential and light commercial dry
areas)
Gypsum wallboard (interior dry areas)
Existing ceramic tile (scarified)
Fully-bonded sheet vinyl flooring (scarified)
Plastic laminates (scarified)
Cutback adhesive (see preparation instructions)
Composition of Product
Modified dry-set mortar, which is a proprietary blend of Portland
cement, inorganic aggregates, copolymers and chemicals.
Benefits of Product in the Installation
Formulated for any natural stone and all large and heavy tile
applications
Reduces installation time and labor by eliminating lippage and
minimizing the need for additional leveling
Sag and slip resistance immediately holds wall tiles in place
Can be used in thin-set or medium bed applications up to 3/4" (19
mm)
Exceeds ANSI A118.4 and A118.11 standards without the need for
additives
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
50 lb (22.68 kg) bag
White or grey
Natural Stone & Large Tile Premium Mortar
Published Date: 3/20/2018