CONCRETE COATING
PART 1 GENERAL
1.1SECTION INCLUDES
A.Water repellent and concrete stain applied to concrete surface.
B.Concrete stain reapplied over graffiti on concrete surface.
1.2RELATED SECTIONS Not Used
1.3REFERENCES
A.ASTM D 968: Abrasion Resistance of Organic Coatings by Falling
Abrasive
B.ASTM D 3960: Volatile Organic Compound (VOC) Content of Paints and
Related Coatings
C.ASTM D 4285: Indicating Oil or Water in Compressed Air
D.ASTM D 4541: Pull-Off Strength of Coatings Using Portable Adhesion
Testers
E.ASTM D 7234: Pull-Off Strength of Coatings on Concrete Using Portable
Pull-Off Adhesion Testers
1.4DEFINITIONS Not Used
1.5SUBMITTALS
A.Concrete Coating System
1.Manufacturer’s product data sheets for review.
a.Include recommended installation instructions for each
product used for information.
2.Letter of compatibility under the concrete stain manufacturer’s
letterhead, for review, indicating that the concrete stain to be used are compatible with the water repellents to be used.
3.Three 8½ inch by 11 inch samples of each concrete stain color
required on the project for review before ordering concrete coating materials. Concrete Coating
PART 2 PRODUCTS
2.1CONCRETE COATING SYSTEM
A.Water Repellent
1.Use Alkoxy Silane (98 percent or greater silane) as a base coat.
a.Meet VOC content of 350 g/L or less for a reactive
penetrating sealer. Refer to ASTM D 3960.
B.Concrete Stain
1.Use a 100 percent acrylic emulsion stain that meets the
requirements of Table 1.
2.Provide the colors as described.
a.Match the color of the existing surface when applying over
graffiti.
Table 1 PROPERTIES OF CURED CONCRETE STAIN Property Value Method Abrasion Resistance, min. liters per mil 30 ASTM D 968 ASTM D 4541 Adhesion to Concrete Substrate failure or ASTM D 7234 VOC content, max. g/L 250 ASTM D 3960
2.2EQUIPMENT
A.Sandblaster/Air Compressor
1.Air free of water and oil according to ASTM D 4285.
B.Pressure Washer
1.At least 3000 psi but no more than 5000 psi.
PART 3 EXECUTION
3.1GENERAL
A.Use only one concrete coating system on an individual element.
Concrete Coating
B.Furnish, prepare, apply, cure, and store materials according to the product
manufacturer’s directions and as specified in this Section.
1.Do not allow material to freeze
2.Deliver concrete coating materials to the project site in sealed
containers bearing the manufacturer’s original labels with the brand, color, and type clearly marked on each container.
C.Omit water repellent when applying concrete stain over graffiti.
D.Weather Limitations
1.Apply when the outside air temperature is between 45 and
90 degrees F and will remain between 45 and 90 degrees F per the manufacturer's recommended cure time.
2.Do not apply within 24 hours of a rain event or pressure washing,
nor if a rain event is forecasted within 8 hours.
3.2PREPARATION BEFORE WATER REPELLENT APPLICATION
A.Cure concrete for 28 days before water repellent application.
1.Rapid setting patch materials do not need to cure for 28 days but
must meet moisture content levels specified in this Section.
B.Completely remove curing compounds, oil, grease, dirt, and any other
surface contaminants from concrete surfaces.
1.Use one of the following methods:
a.Pressure washing
b.Shotblasting
c.Sandblasting
C.Remove dust or debris using compressed air immediately before each
application of the product.
D.Measure moisture content in the presence of the Engineer with an
electronic concrete moisture meter at three or more locations along the area to be sealed.
1.Measure recently patched concrete areas separately.
2.Do not apply water repellent if any measurements exceed 4.0
percent.
3.3WATER REPELLENT APPLICATION
A.Apply according to the manufacturer’s recommendations, except for the
following.
1.Apply each coat at an application rate of 1 gal penetrating concrete
sealer to 250 sq ft. Concrete Coating
B.Apply two separate coats of penetrating concrete sealer.
1.Apply second coat while the first coat is still wet to the touch.
3.4PREPARATION BEFORE CONCRETE STAIN APPLICATION
A.Allow water repellent to cure for at least 5 hours.
B.Pressure wash surface and allow area to dry for 24 hours and complete
any additional surface preparation requirements per manufacturer’s recommendations.
C.Stir the coating materials thoroughly before application.
3.5CONCRETE STAIN APPLICATION
A.Apply according to the manufacturer’s recommendations.
B.Apply two coats of the concrete stain according to the manufacturer’s
recommendations, but not less than the following rates.
1.Apply the first coat evenly at a minimum application rate of 1 gal
concrete stain to 350 sq ft working in one direction.
2.Cure the first coat of the concrete stain at least 4 hours before the
second coat of the concrete stain is applied.
3.Apply the second coat evenly at a minimum application rate of 1 gal
concrete stain to 350 sq ft working in the opposite direction of the first coat.
3.6PROTECTION
A.Prevent sandblasting material, coating products and debris from falling
into waterways, pedestrian areas, traffic areas, or onto railroad tracks.
B.Protect surrounding surfaces from overspray.
END OF SECTION
Concrete Coating
Utah revises spec sections through supplementals and new editions. We check this one every week and email you the day it changes. Free, no account.
Source: Utah Standard Specifications for Road and Bridge Construction, 2026 Edition. Pages 1196–1199 of 1,331.
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