How to Guide

ManualsBrandsMAPEI ManualsCaulk33910

DESCRIPTION

Keracaulk S (sanded) and Keracaulk U (unsanded) are premium-grade, easy-to-

use, easy-to-clean siliconized acrylic caulks formulated to match all of MAPEI’s

grout colors.

FEATURES AND BENEFITS

• Water cleanup while fresh

• Paintable

• BioBlock

technology for mold and mildew resistance

• Packaged in gun-grade tubes for easy application

• VOC-compliant

INDUSTRY STANDARDS AND APPROVALS

• ASTM: Meets C834 for low-movement sealant

LEED v3 Points Contribution LEED Points

MR Credit 5, Regional Materials* .................................................Up to 2 points

IEQ Credit 4.1, Low-Emitting Materials – Adhesives & Sealants ................ 1 point

IEQ Credit 4.3, Low-Emitting Materials – Flooring Systems ....................... 1 point

* Using this product may help contribute to LEED certification of projects in the

categories shown above. Points are awarded based on contributions of all

project materials.

WHERE TO USE

• For gaps up to 1/4" (6 mm)

• As a flexible barrier/filler between horizontal and vertical surfaces to prevent

cracked tile due to expansion

• For filling joints where tile abuts dissimilar surfaces

• For caulking around sinks, tubs, showers, countertops and ceramic tile floors

• For interior use only

• For restoring cracked or worn grout joints

LIMITATIONS

• Do not install over substrates containing asbestos.

• The application temperature range is 50°F to 90°F (10°C to 32°C).

• Apply only to clean, dry surfaces.

• For both Keracaulk S and Keracaulk U, joints should not exceed 1/4" (6 mm)

in width.

• Do not use for exterior projects or applications subject to constant water

immersion.

• Do not use in areas where joints will be subject to heavy abrasion or wear.

• Allow new concrete to cure for 30 days before caulking.

• Although Keracaulk S and Keracaulk U are color-matched to MAPEI’s

grouts, expect a slight variation in color due to the difference in composition

between materials.

• For applications beyond 1/4" (6 mm) in depth, the caulking depth must

be controlled by a closed-cell backer rod.

• To ensure product effectiveness, do not apply Keracaulk S or Keracaulk U

thinly, as with a paint.

• Keracaulk S and Keracaulk U may stain porous materials. Test on a separate

area before final application.

• Refer to the project's ASTM requirements before commercial use of

Keracaulk S and Keracaulk U.

SURFACE PREPARATION

• Surfaces must be structurally sound, stable, clean and free from dust, oil,

grease, paint, gypsum patch, flooring adhesive, tar, wax, sealers, curing

Premium, Sanded and

Unsanded Siliconized

Acrylic Caulks

racaul

Keracaulk

racaul

Keracaulk U

Version: Sept. 15, 2017

Summary of content (2 pages)

PAGE 1
/ S k l u U a c k l a u r a Ke rac e K Version: Sept. 15, 2017 ® Premium, Sanded and Unsanded Siliconized Acrylic Caulks DESCRIPTION • For interior use only Keracaulk S (sanded) and Keracaulk U (unsanded) are premium-grade, easy-touse, easy-to-clean siliconized acrylic caulks formulated to match all of MAPEI’s grout colors. • For restoring cracked or worn grout joints LIMITATIONS FEATURES AND BENEFITS • Do not install over substrates containing asbestos.
PAGE 2
compounds, form release agents, laitance, loose particles and foreign substances that could reduce or impair adhesion. • Remove all traces of paint, loose particles, residue and cement particles by mechanical means. • Remove mildew by scrubbing with a mixture of 4 U.S. oz. (118 mL) of trisodium phosphate (TSP), 1 U.S. qt. (946 mL) of liquid bleach and 3 U.S. qts. (2,84 L) of warm water. Protect eyes and hands by wearing goggles and water/chemical-resistant gloves.