Product Data Sheet
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Non-Yellowing, Acrylic Curing and Sealing Compound
CS-309-30 acrylic curing and sealing compound is a high solids, clear, transparent, ready-to-apply, non-yellowing, liquid membrane-forming compound formulated from special acrylic polymers and quick-evaporating solvents that effectively cures and seals freshly placed concrete. Once properly applied, CS-309-30 provides a premium-grade film for superior moisture retention and hydration to produce the designed strength of the concrete.
CS-309-30 is ideal for application on exterior concrete surfaces, sidewalks, patios, multi-level parking decks, driveways, and parking areas … wherever simultaneously curing and sealing exterior concrete surfaces. The product creates a durable finish that has improved resistance to chemicals, oil, grease, de-icing salts, and abrasion. CS-309-30 provides an attractive, high-gloss finish that enhances the natural appearance of the concrete.
- Breathable film allows moisture in cured concrete to evaporate.
- Provides a totally clear membrane for new and existing concrete that will not yellow.
- Provides a tough, durable, uniform, breathable, film finish on exterior concrete surfaces.
- Cures and seals freshly placed concrete simultaneously in one application.
- Produces a premium-grade film yielding superior moisture retention.
- Minimizes hair checking, cracking, dusting, spalling, and other defects common to improperly cured and uncured concrete.
- Provides an attractive sheen that enhances the natural appearance of concrete.
- Applies easily … dries quickly for less downtime.
- Meets U.S. EPA architectural coatings rule requirements.
- When properly applied, helps reach designed concrete strength and minimizes excessive shrinkage.
5 Gallon (18.9 L) Pails
55 Gallon (208.2 L) Drums
300 – 600 ft.2/gal. Coverage is approximate and may vary depending on surface finish/texture, concrete condition, climatic conditions, etc. Always apply to a test area first to determine actual coverage rate before full-scale application.
When stored indoors in original, unopened containers at temperatures between 40° – 90° F, optimum performance and best use is obtained within two years of date of manufacture.
- AASHTO M 148, Type 1, Classes A & B
- ASTM C309, Type 1, Classes A & B
- ASTM C1315, Type I, Class A
- USDA Accepted
- National EPA VOC Emission Standard for Architectural Coatings
VOC Content: 653 g/L
Fresh (New) Concrete … Apply as soon as all surface water has disappeared and the concrete surface will not be marred by walking workers.
Existing (Old) Concrete … Concrete surface must be clean and dry with all stains, oil, grease, dust, dirt, and curing compounds removed prior to application.
Application Method… Use a sprayer or short-nap roller to apply a uniform film. A standard industrial-grade sprayer, such as a Chapin 19069, equipped with Viton fittings, a 0.5 GPM nozzle, and fan spray pattern, is recommended. Apply over the entire surface. Avoid puddling in low areas. If puddles occur, brush or roll them out.
For full application guidelines, please visit https://www.wrmeadows.com/training-videos/otc-product-application-guidelines/.
Mixing … For optimum performance, gentle mixing or agitation is recommended. CAUTION: TO AVOID FOAMING, DO NOT MIX EXCESSIVELY.
Drying Time… Product dries quickly. Drying times will vary depending on application rate, temperature, humidity, and project conditions. Restrict foot traffic for at least four hours. Twelve hours is preferable.
Cleanup… Clean tools after use with a solvent such as xylol, toluol, or SEALTIGHT® CLEANER from W. R. MEADOWS.
Coating is to be applied without dilution or thinning. For exterior application only. Block all HVAC ventilation ducts which may spread product odor. Use with adequate ventilation and keep away from open flame. If odor is objectionable, use of the VOCOMP® series from W. R. MEADOWS is suggested. Surfaces treated with CS-309-30 may become slippery under certain conditions. To increase slip resistance, add SURE-STEP™ additive from W. R. MEADOWS to the product.
Product should not be applied during high temperature conditions in direct sunlight. These conditions cause rapid evaporation, which does not allow the film to form properly. Under these conditions, the film may peel, bubble, and/or turn white (blush). The application temperature must be between 40° – 90° F.
Product should not be applied to concrete exposed to excessive moisture. Entrapped moisture in a solvent-based sealer may cause the film to peel and/or turn white (blush). Over application may result in the finished film appearing hazy or white.
Product may be used on colored concrete, but mottling may occur. Do not use on dense or non-porous surfaces, i.e. brick, stone, etc. Concrete containing calcium chloride will remain dark longer when treated with this product. The specifier and user shall determine the suitability of product for specific application and assume all responsibility in connection therewith. For any alternate adhesion specifications or requirements besides ASTM C1315, Section 9.8, secure the approval of the manufacturer of any paint, coating, carpet, adhesive, resilient flooring, floor topping, etc. (any type/composition of subsequent floor treatment) that will be applied over CS-309-30. Obtain this approval before applying the product over concrete previously applied with CS-309-30. To prevent damage, quickly clean spills of solvent, gasoline, brake fluid, or other staining materials.
HEALTH AND SAFETY
Prolonged inhalation of vapors in excess of permissible exposure limits may result in symptoms of transient central nervous system depression. Direct contact with the product may result in irritation of the skin and eyes. Product vapors may also cause irritation. CS-309-30 is combustible. Remove ignition sources prior to use. Empty containers may hold combustible vapors. Handle empty containers as combustible liquids. In the event of a spill, contain the product; apply absorbents and place in sealed containers. In the event of a fire, contain all run-off water. Refer to Safety Data Sheet for complete health and safety information.