Installation Guide

ManualsBrandsCustom Building Products ManualsFlooringMultiSet Gray 50 lb. Modified Thinset Mortar

MultiSet Economical Thin-Set Mortar / TDS-192

Movement Joint Placement

Movement joints are required for perimeters and other changes of

plane in all installations. 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.

Mixing Ratios

Thoroughly mix 6 quarts (5.68 L) clean, cool water and 50 lb. (22.68

kg) bag of powder together to a smooth, paste-like consistency.

Mixing Procedures

Mixbyhandorusealow150–200rpmspeed1/2"(13mm)drillto

achieve a smooth, paste-like consistency. Let the mixture slake or

stand5–10minutes;stiragainanduse.Stiroccasionally,butdonot

add more water. When properly mixed, troweled ridges will stand

without slump.

Application of Product

INSTALLATION TO CONFORM TO ANSI A108.5. Use a properly-sized

notched trowel to ensure 100% coverage under tiles. Using flat side of

trowel, apply skim coat of mortar to the surface. Apply additional

mortarwithnotchedsideoftrowelheldata45°angletothesurface,

combing in one direction. Press tile firmly into place in a perpendicular

motion across ridges, moving back and forth. Perpendicular pressing

flattens ridges and closes valleys allowing maximum coverage. With

some tile, back-buttering is advisable. Adjust tile promptly and beat in

with a beating block and rubber mallet. Mortar can be applied up to

1/4" (6 mm) thick after beat in. Periodically pull up a tile and check the

back to ensure complete coverage with the adhesive. Do not spread

more material than can be tiled in 15 minutes or while material has

wet tack (sticky to the touch). If material has skinned over (not sticky),

recomb with notched trowel. If too dry, remove and replace with fresh

material. Material in bucket will remain workable approximately 2

hours.

Curing of Product

Curing time is affected by ambient and surface temperatures and

humidity. Use the following as a guideline. Allow 24 hours before

grouting and light traffic, and 7-10 days before heavy or vehicular

traffic. Before exposure to heavy or vehicular traffic, assure assembly

israted“HeavyorExtraHeavy”perTCNAServiceRequirements.As

necessary, use plywood or other load distributing protection when

moving heavy equipment across tiled assembly.

Cleaning of equipment

Clean with water before the material dries.

Storage

Store in a cool dry area.

Health Precautions

This product contains Portland cement and free silica. 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. Do not breathe dust; wear a NIOSH approved

respirator

Conformance to Building Codes

Installation must comply with the requirements of all applicable local,

state and federal code jurisdictions.

6 Availability & Cost

Item Code Size Color Package

MSMG50 50 lb (22.68 kg) Gray Bag

MSMW50 50 lb (22.68 kg) White Bag

7 Product Warranty

Obtain the applicable LIMITED PRODUCT WARRANTY at

www.custombuildingproducts.com/product-warranty or send a written

request to Custom Building Products, Inc., Five Concourse Parkway,

Atlanta, GA 30328, USA. Manufactured under the authority of Custom

8 Product Maintenance

Properly installed product requires no special maintenance.

9 Technical Services Information

For technical assistance, contact Custom technical services at 800-282-

8786 or visit custombuildingproducts.com.

10 Filing System

Additional product information is available from the manufacturer upon

request.

Expected Wear

Properly installed tile will last for more than 60 years.