03 05 00

DATA SHEET 3300-301

Specification

CS-309™
Curing & Sealing Compound

DESCRIPTION
CS-309 is a colourless transparent curing and sealing compound formulated from acrylic polymers and quick-evaporating solvents. When applied on freshly placed concrete it forms a tough uniform moisture retentive film, which simultaneously cures and seals the concrete.

USE
Curing and sealing newly placed concrete in commercial and industrial applications such as floors, sidewalks, service stations, multi-level parking decks and driveways.

CS-309 is recommended for exterior use, resisting discolouring or yellowing due to ultra-violet light exposure. It provides a durable finish that resists chemicals, oil, grease, de-icing salts and abrasion.

NOTE: For added protection and a greater sheen on new or old concrete, we recommend (2) coats of CS-309/25, or a coat of HIAC be applied at right angles. The second coat may be applied after the previous coat has thoroughly dried.

FEATURES
Retains mix water in concrete to permit complete hydration of the cement paste for hard, dense concrete resistant to staining, abrasion, dusting and spalling.

Film remains on concrete surface to permit easy clean up and reduce maintenance costs.

Accepts chlorinated rubber and oil-based paints and most flooring adhesives.

CAUTION
Use only when concrete surfaces are above 5°C (40°F) and only after all surface water sheen has disappeared.

Allow 24 hours before application in very high humidity conditions.

Will temporarily darken concrete, lightens to normal concrete colour in 6 to 12 months.

Keep vapours away from foodstuffs.

Not resistant to aromatic solvents, will not resist spillage of lead free gasoline.

Flammable - keep away from heat and open flame.

Do not use as a substitute sealer where coloured concrete shakes require colour-matched sealers.

PROPERTIES

STANDARDS
Conforms to ASTM C 309, Type 1, Class B.
Agriculture and Agri-Food Canada accepted
Approved by the Ministry of Transportation, Quebec

DATA
Coverage
Broomed surface 4.9 m²/L (240 ft.²/gal.) 
Trowelled surface up to 14.7 m²/L (720 ft.²/gal.)
Coverage is approximate and depends on the porosity of the surface. 

Packaging
3.78 litre or 18.9 litre pails and 205 litre drums

APPLICATION INSTRUCTIONS
Product container provides all application information. Read and follow all instructions and precautions.

Apply by sprayer, long nap roller, soft bristle broom or lamb's wool applicator. Standard garden-type sprayers, equipped with a neoprene hose and gaskets are recommended for best results.

Apply CS-309 as soon as all surface water has disappeared and the concrete surface will not be marred by walking workmen. Apply evenly over entire surface; avoid puddling in low areas. Restrict foot traffic for at least 4 hours preferably, 12 hours.

CS-309 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).

CS-309 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).

For greater protection and higher sheen, apply a further coating of CS-309 and/or apply a coating of HIAC allowing 7 days between coats.

*Note: In cases when CS-309 is applied to existing concrete surfaces (more than 28 days old) the variations in coloration of the sands and aggregate present in the existing surface may be enhanced cuasing the surface to appear dis-coloured.

CLEAN UP
Clean tools and equipment after use with a solvent such as SEALTIGHT Solvent, xylol or toluol.

SAFETY AND TOXICITY
Contains solvent. Use with adequate ventilation and avoid prolonged breathing of vapours that may cause dizziness or suffocation. Avoid contact with skin and/or eyes. See product label and Material Safety Data Sheet for additional information. Read and follow all instructions and precautions.

Harmful or fatal if swallowed.

Proper application is the responsibility of the user. Field visits by W. R. MEADOWS’ personnel are for the purpose of making technical recommendations only, and are not to supervise or provide quality control on the job-site.

SPECIFICATION CLAUSE
Section 03 05 00

Concrete Curing and Sealing Compound W. R. MEADOWS CS-309 conforming to ASTM C 309, Type 1, Class B.

2007-01-18