Installation Guide

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Step 7. For more severe cases of epoxy grout haze, use

MAPEI’s UltraCare

™

Epoxy Grout Haze Remover.

For use as a mortar

1. Remove the mixed product from the container and place

it in piles on the floor. Kerapoxy CQ is a thermosetting

product, so it sets faster in a container or a large mass.

2. Choose a notched trowel (see the “Approximate

Coverage” chart) with sufficient depth to achieve more

than 80% mortar contact to both the tile and substrate

for interior applications, and more than 95% contact for

exterior installations, commercial floor installations and

wet applications. All edges of the tile or stone must be

supported by the mortar. It may be necessary to back-

butter tiles in order to reach these requirements. (Refer

to ANSI A108.5 specifications and TCNA guidelines.)

3. With pressure, apply a coat by using the trowel’s flat

side to key mortar into the substrate.

4. Apply additional mortar, combing it in a single direction

with the trowel’s notched side.

5. Spread only as much mortar as can be tiled before the

product hardens and loses its ability to transfer to the

tile. Open time can vary with jobsite conditions.

6. Place the tiles firmly into the wet mortar. Push the tiles

back and forth in a direction perpendicular to trowel

lines, to collapse the mortar ridges and to help achieve

maximum coverage. Ensure proper contact between

the mortar, tile and substrate by periodically lifting a

few tiles to check for acceptable coverage (see TCNA

adhesive placement guidelines).

7. Remove excess mortar from the joint areas so that

at least 2/3 of the tile depth is available for grouting

(see ANSI A108.10 guidelines).

8. Provide for expansion and control joints as specified

per TCNA Detail EJ171 or TTMAC Specification Guide

09 30 00, Detail 301MJ.

9. Clean tools immediately with fresh water.

10. Check the installation the same day before leaving the

jobsite to make sure it is completely clean. If the tile

surface has any shiny or tacky residue, remove it with a

solution of 1 U.S. oz. (29,6 mL) of a clear dishwashing

soap added (if needed) to a 3-gallon (11,4-L) pail of

clean water.

PROTECTION

• Protect grout installations for at least 7 days, and wait

at least 3 days before checking hardness.

• The optimum curing temperature is 73°F (23°C).

Cooler temperatures may require extended protection

times.

• Do not disturb grout or walk over installed tiles for at

least 24 hours after setting. Do not allow heavy traffic

over installed tiles for at least 48 hours after setting.

• Because propane gas heaters will yellow epoxy, refrain

from using such heaters or properly vent all exhaust.

• Kerapoxy CQ should be cured for at least 10 to 14 days

at 73°F (23°C) before water immersion or exposure

to chemicals. Longer times will be needed for colder

temperatures.

• Do not allow any activity in the area that will cause dirt or

debris to become embedded in the grout joints as they

are curing.

MAINTENANCE

• Kerapoxy CQ should be cured for at least 3 days before

routine cleaning.

• When cleaning Kerapoxy CQ as grout, keep steam-

cleaning wands 6" to 12" (15 to 30 cm) above the tile

surface.

• MAPEI grout products are produced to the highest

standards of quality. To maintain a clean tile surface, use

a neutral-pH cleaner for maintaining the floor, followed

by a clean-water rinse.

• Do not use harsh chemicals to maintain the tile surface.

Before proceeding with cleaning, consult the cleaner’s

manufacturer for compatibility, use and application

instructions. Remove or rinse fatty acid residue from

the grout surface to avoid potential grout deterioration

caused by prolonged exposure.

Kerapox

Kerapoxy