Version: Sept. 20, 2017
Kera colo
Uns r and ed G rout
Premium Unsanded Grout with Polymer
DESCRIPTION
Keracolor U Unsanded Grout is a premium-grade, preblended, polymermodified unsanded Portland-cement tile grout that requires only the addition of water for mixing. It will grout joints from 1/16" to 1/8" (1,5 to 3 mm).
FEATURES AND BENEFITS
• For interior/exterior floors and walls
• Contains BioBlock ® technology for mold and mildew resistance
INDUSTRY STANDARDS AND APPROVALS
• ISO 13007: Classification CG2WA
• ANSI: Meets or exceeds ANSI A118.6 industry standards
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 MAPEI 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 grouting interior/exterior residential and commercial floor and wall surfaces in dry or wet conditions
• For grouting dimensional stone, slate, granite, stone agglomerates and most types of ceramic, ceramic mosaic, quarry, brick paver, porcelain, glass and clay tiles
• For joint widths from 1/16" to 1/8" (1,5 to 3 mm)
• For application in submerged conditions (swimming pools, spas, water features and fountains), once fully cured (after 21 days)
LIMITATIONS
• Do not install over substrates containing asbestos.
• Do not use to grout joints greater than 1/8" (3 mm) wide. Instead, use
Keracolor S Sanded Grout , Ultracolor ® Plus FA or an appropriate MAPEI epoxy grout (see the respective Technical Data Sheet [TDS] for details).
• Do not use when a highly chemical-, impact- and stain-resistant grout is required or in heavy industrial tile installations. Instead, use an appropriate MAPEI epoxy grout (see the respective TDS for details).
• When grouting in temperatures above 80°F (26°C), see the Technical
Bulletins at www.mapei.com or consult MAPEI’s Technical Services
Department.
Consult MAPEI’s Technical Services Department for recommendations regarding installation over substrates and conditions not listed.
SURFACE PREPARATION
• Certain tiles with high absorption, surface porosity or rough surfaces may require sealing before grouting to prevent permanent staining.
• The application of a grout release over certain types of porcelain or textured surface tiles or stone may be advantageous where a fine surface porosity
Kera colo
Uns r and ed G rout might trap fine cement particles or color pigments.
Seek the advice of the tile or stone manufacturer and site-test (mock up) on separate samples before grouting.
• Caution: Some types of glazed ceramic tiles, marble, granite and marble agglomerates can be permanently stained, scratched, dulled or damaged when grouted with pigmented grout or sanded grout formulas.
Generally, white grout is best suited for grouting white or light-colored marble or granite. Take all the necessary precautions to ensure that the marble, granite or tiles are compatible with colored grouts. Check the tile or marble manufacturer’s literature and test grout on a separate sample area before grouting to determine the suitability of the product with colored and/or sanded grouts.
• Before grouting, make sure the tiles or stones are firmly set and the adhesive or mortar is completely dry.
• Remove all spacers, pegs, ropes and strings.
• Grout joints must be clean and free of standing water, dust, dirt and foreign matter. Remove excess adhesive or mortar from the joint area so that 2/3 of the depth of the tile is left available for grouting.
• Clean the tile or stone surface thoroughly to remove dust, dirt and other contaminants that may cause grout discoloration.
See MAPEI’s “Surface Preparation Requirements” document in the Reference & Installation Guides section of the Tile &
Stone Installations Systems page on MAPEI’s Website.
MIXING
Choose all appropriate safety equipment before use. Refer to the Safety Data Sheet for details.
1. For best results, have the same person mix all of the grout. Consistent mixing techniques will promote more uniform results.
2. Before mixing the grout with water, dry-blend the product so that the finished grout does not show color variations, which may arise due to pigment settling during shipment. If two or more bags are to be used, dry-blend all of the contents together.
3. Mix with cool, clean water only or an approved MAPEI additive. Mix by using the following water-to-grout proportions:
Water Keracolor U Unsanded Grout powder
4.8 to 5.4 U.S. oz.
(142 to 160 mL) ......................................... 1 lb. (0,45 kg)
24 to 27 U.S. oz.
(710 to 798 mL) ....................................... 5 lbs. (2,27 kg)
48 to 54 U.S. oz.
(1,42 to 1,60 L) ...................................... 10 lbs. (4,54 kg)
3.75 to 4.22 U.S. qts.
(3,55 to 3,99 L) ...................................... 25 lbs. (11,3 kg)
4. Pour the required amount of clean, cool water into a clean mixing container. Gradually add the proportionate amount of Keracolor U Unsanded Grout while slowly mixing. To avoid shade variation in the finished grout joints, always add the powder to the water while being consistent in the mixing process and with the quantity of water used from batch to batch.
5. Mix thoroughly with a low-speed mixer (at about
350 rpm) for about 3 to 5 minutes, or until obtaining a smooth, creamy, homogenous paste consistency and a uniform shading of the colored grout.
6. Avoid prolonged mixing, which could trap air and shorten the pot life.
7. Allow the grout to sit (“slake”) in the container for about
5 minutes.
8. Remix for about 1 to 2 minutes without adding more liquid or powder.
9. Wash hands and mixing tools with water immediately after mixing.
PRODUCT APPLICATION
Read all installation instructions thoroughly before installation.
1. Use only at temperatures between 50°F and 100°F
(10°C and 38°C).
2. Using consistent application and cleaning procedures will produce consistent results.
3. To aid in spreading the grout, slightly moisten the tile or stone surface with a damp sponge just before application. Do not flood the tiles or allow water to stand in the ungrouted joint areas.
4. Force into the joints with a rubber grout float. Make sure all joints are wellcompacted and free of voids and gaps.
5. Remove excess grout from the tile surface, moving the grout float diagonally to the joints while the Keracolor U
Unsanded Grout is still fresh.
6. The grout surface should be flush with the tile edge.
7. Some stiffening may occur before all material is used
(usually within about 1 hour at room temperature).
If this occurs, simply remix but do not add any liquid.
8. Provide for expansion and control joints as specified per TCNA Handbook method EJ171 or TTMAC
Specification Guide 09300, Detail 301EJ.
9. Allow the Keracolor U Unsanded Grout to firm up in the joints sufficiently to avoid damaging the grout surface, usually in 15 to 30 minutes depending upon the temperature, humidity and absorption rate of the tile or stone.
10. Use two buckets of cleaning water: one for rinsing the majority of the grout residue from the grout sponge, and one for moistening the sponge in clean water.
11. Dip the sponge in a bucket of water and wring out the excess, so that the sponge does not drip water. Using very little pressure, pull the sponge diagonally across the grout joints to remove the excess grout from the tile surface. Also use the sponge to smooth the surface of the grout joint. Turn the sponge over and make another pass in an adjacent area. After using both sides, rinse the sponge in one bucket and wring out the excess water. Dip the sponge in the second bucket of water, wringing out the excess and continuing the process.
12. Change the water in the buckets frequently to help limit the amount of haze that forms on the tile or stone surface.
13. To prevent efflorescence, discoloration and soft/ powdery joints, avoid cleaning with excessive water.
14. To control color variations and minimize efflorescence, buff the grouted surface with cheesecloth or a clean, dry cotton cloth when a haze is visible on the tile surface, usually one to two hours after grouting. This should remove any remaining surface water or grout residue.
15. Clean hands and tools with clean, soapy water while the grout is fresh.
16. Never use acid for cleaning marble, glazed tile or pigmented grout surfaces. If a persistent haze remains after normal cleaning, see the Technical Bulletins at www.mapei.com or consult MAPEI’s Technical
Services Department.
PROTECTION
• Provide for dry, heated storage on site and deliver materials at least 24 hours before tilework begins.
• For residential showers and tub surrounds, restrict use for 24 to 48 hours after grouting. For steam showers, restrict use for 14 days after grouting.
• For at least 21 days after grouting, protect the installation from freezing and water immersion (see the TDS of the adhesive or setting system for details).
• Floors: Keep the grout installation free from heavy traffic for at least 72 hours after grouting.
• Walls: Protect the grout installation from impact, vibration and hammering on adjacent and opposite walls for 14 days after tile installation (see the TDS of the adhesive or setting system for details).
• Because temperature and humidity (during and after installation of tile) affect the final curing time of all cement-based materials, allow for extended periods of cure and protection when temperatures drop below
60°F (16°C) and/or when the relative humidity is higher than 70%.
MAINTENANCE
• Sealing is not required. However, a high-performance penetrating grout sealer may still be applied from
MAPEI's UltraCare ™ family of sealers, which includes
Penetrating Plus Stone, Tile & Grout Sealer; and
Penetrating Plus SB Stone & Porcelain Tile Sealer.
Follow the directions provided in the UltraCare
Maintenance Guide.
• Grout must be fully cured for 21 days before regular cleaning.
• MAPEI grout products are produced to the highest standard 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 chemical cleaners 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.
Kera colo
Uns r and ed G rout
Kera colo
Uns r and ed G rout
ISO 13007 Classification
Classification Code
CG2 (cementitious grout, improved)
W (reduced water absorption)
A (high abrasion resistance)
Test Characteristics
Shrinkage
Water absorption
Abrasion resistance
Classification Requirement
≤ 0.30% shrinkage in 28 days
≤ 5 g after 4 hours
≤ 1,000 mm 3
ANSI Specification
Test Method
ANSI A118.6 – flexural strength
ANSI A118.6 – compressive strength
ANSI A118.6 – shrinkage
ANSI A118.6 – water absorption
Specification Standard
400 psi (2,76 MPa) at 7 days
3,000 psi (20,7 MPa) at 28 days
< 0.03% (1 day)
< 0.10% (7 days)
< 18% (50% relative humidity to immersion)
< 20% (immersion to dry)
Test Results
400 to 1,000 psi
(2,76 to 6,90 MPa) at 7 days
3,000 to 5,000 psi
(20,7 to 34,5 MPa) at 28 days
< 0.03% (1 day)
< 0.10% (7 days)
< 18% (50% relative humidity to immersion)
< 20% (immersion to dry)
Shelf Life and Product Characteristics (before mixing)
Shelf life
Physical state
Colors
2 years when stored in original, unopened packaging at 73°F (23°C)
Powder
Available in MAPEI's palette of 40 colors, organized into
5 color collections. Refer to MAPEI's grout/caulk color chart. Sample grout color chips are available upon request.
Application Properties*
at 73°F (23°C) and 50% relative humidity
Pot life
Application temperature range
Full cure
VOCs (Rule #1168 of California's SCAQMD)
About 2 hours
50°F and 100°F (10°C and 38°C)
21 days
0 g per L
Packaging
Size
Tub: 1 lb. (0,45 kg), white only
Bag: 5 lbs. (2,27 kg), Canada only
Bag: 10 lbs. (4,54 kg)
Bag: 25 lbs. (11,3 kg)
Approximate Coverage*
Tile Size
Per 10 lbs. (4,54 kg) – Coverage in sq. ft. (m²)
1" x 1" x 1/4" (25 x 25 x 6 mm)
2" x 2" x 1/4" (50 x 50 x 6 mm)
3" x 3" x 1/4" (75 x 75 x 6 mm)
3" x 6" x 1/4" (75 x 150 x 6 mm)
4-1/4" x 4-1/4" x 1/4" (108 x 108 x 6 mm)
6" x 6" x 1/4" (150 x 150 x 6 mm)
6" x 6" x 3/8" (150 x 150 x 10 mm)
8" x 8" x 3/8" (200 x 200 x 10 mm)
12" x 12" x 3/8" (300 x 300 x 10 mm)
16" x 16" x 3/8" (406 x 406 x 10 mm)
18" x 18" x 3/8" (457 x 457 x 10 mm)
18" x 18" x 1/2" (457 x 457 x 12 mm)
20" x 20" x 1/2" (508 x 508 x 12 mm)
24" x 24" x 1/2" (610 x 610 x 12 mm)
1/16" (1,5 mm)
52 (4,83)
104 (9,66)
158 (14,7)
212 (19,7)
224 (20,8)
316 (29,4)
212 (19,7)
282 (26,2)
422 (39,2)
566 (52,6)
634 (58,9)
476 (44,2)
530 (49,2)
638 (59,3)
Grout Joint Width
3/32" (2,5 mm)
34 (3,16)
70 (6,50)
104 (9,66)
140 (13,0)
148 (13,7)
210 (19,5)
140 (13,0)
188 (17,5)
282 (26,2)
376 (34,9)
422 (39,2)
318 (29,5)
352 (32,7)
424 (39,4)
Per 25 lbs. (11,3 kg) – Coverage in sq. ft. (m²)
Tile Size Grout Joint Width
1" x 1" x 1/4" (25 x 25 x 6 mm)
2" x 2" x 1/4" (50 x 50 x 6 mm)
3" x 3" x 1/4" (75 x 75 x 6 mm)
3" x 6" x 1/4" (75 x 150 x 6 mm)
4-1/4" x 4-1/4" x 1/4" (108 x 108 x 6 mm)
6" x 6" x 1/4" (150 x 150 x 6 mm)
6" x 6" x 3/8" (150 x 150 x 10 mm)
8" x 8" x 3/8" (200 x 200 x 10 mm)
12" x 12" x 3/8" (300 x 300 x 10 mm)
16" x 16" x 3/8" (406 x 406 x 10 mm)
18" x 18" x 3/8" (457 x 457 x 10 mm)
18" x 18" x 1/2" (457 x 457 x 12 mm)
20" x 20" x 1/2" (508 x 508 x 12 mm)
24" x 24" x 1/2" (610 x 610 x 12 mm)
1/16" (1,5 mm)
130 (12,1)
260 (24,2)
395 (36,7)
530 (49,2)
560 (52,0)
790 (73,4)
530 (49,2)
705 (65,5)
1,055 (98,0)
1,415 (131)
1,585 (147)
1,190 (111)
1,325 (123)
1,595 (148)
3/32" (2,5 mm)
85 (7,90)
175 (16,3)
260 (24,2)
350 (32,5)
370 (34,4)
525 (48,8)
350 (32,5)
470 (43,7)
705 (65,5)
940 (87,3)
1,055 (98,0)
795 (73,9)
880 (81,8)
1,060 (98,5)
* Coverage shown is for estimating purposes only. Actual jobsite coverage may vary according to actual tile size and thickness, exact joint width, job conditions and grouting methods. Consult MAPEI’s Technical Service Department or use the grout calculator at www.mapei.com for approximate coverage not shown above.
1/8" (3 mm)
60 (5,57)
130 (12,1)
195 (18,1)
260 (24,2)
280 (26,0)
395 (36,7)
265 (24,6)
350 (32,5)
530 (49,2)
705 (65,5)
790 (73,4)
595 (55,3)
660 (61,3)
795 (73,9)
1/8" (3 mm)
24 (2,23)
52 (4,83)
78 (7,25)
104 (9,66)
112 (10,4)
158 (14,7)
106 (9,85)
140 (13,0)
212 (19,7)
282 (26,2)
316 (29,4)
238 (22,1)
264 (24,5)
318 (29,5)
Kera colo
Uns r and ed G rout
Kera colo
Uns r and ed G rout
RELATED DOCUMENTS
Technical Bulletin: The Causes and
Cure for Grout Efflorescence
Technical Bulletin: Grout Cleaning
Technical Bulletin: How to Install
Grout in Hot Weather
Grout Troubleshooting Guide*
* At www.mapei.com
010309-TB*
041101-TB*
010404-TB*
Refer to the SDS for specific data related to health and safety as well as product handling.
LEGAL NOTICE
The contents of this Technical Data Sheet (“TDS”) may be copied into another project-related document, but the resulting document shall not supplement or replace requirements per the
TDS in effect at the time of the MAPEI product installation. For the most up-to-date TDS and warranty information, please visit our website at www.mapei.com. ANY ALTERATIONS TO THE
WORDING OR REQUIREMENTS CONTAINED
IN OR DERIVED FROM THIS TDS SHALL
VOID ALL RELATED MAPEI WARRANTIES.
Before using, the user must determine the suitability of our products for the intended use, and the user alone assumes all risks and liability.
ANY CLAIM SHALL BE DEEMED WAIVED
UNLESS MADE IN WRITING TO US WITHIN
FIFTEEN (15) DAYS FROM DATE IT WAS,
OR REASONABLY SHOULD HAVE BEEN,
DISCOVERED.
We proudly support the following industry organizations:
MAPEI Headquarters of North America
1144 East Newport Center Drive
Deerfield Beach, Florida 33442
1-888-US-MAPEI (1-888-876-2734) /
(954) 246-8888
Technical Services
1-800-992-6273 (U.S. and Puerto Rico)
1-800-361-9309 (Canada)
Customer Service
1-800-42-MAPEI (1-800-426-2734)
Services in Mexico
0-1-800-MX-MAPEI (0-1-800-696-2734)
Edition Date: September 15, 2017
PR: 4643 MKT: 17-2243
For the most current BEST-BACKED SM product data and warranty information, visit www.mapei.com.
All Rights Reserved. Printed in the USA. © 2017 MAPEI Corporation.
