SPECIFICATION ECC- 003

NEW COLORED SURFACE FOR CONCRETE

I. SCOPE OF WORK:

This specification outlines procedures for color coating new, uncoated concrete or restoring color coating on existing concrete tennis courts.

II. NEW CONCRETE:

A new concrete pavement shall have necessary slope to provide good drainage. Also, it must have cured for 28 days. Cracks, dings, and any irregularities should be pre-patched with flexible EXTOL CRACK FILLER.

For more detailed information on new concrete see ECC- System specification.

Etch the concrete thoroughly using a solution of Muriatic Acid mixed one part Acid to twelve parts water. Scrub and rinse before the Acid dries. For best results scrub the surface with a rotary type floor finisher having nylon, silicone-carbide brushes. Then neutralize the acid by washing the surface with clear Ammonia mixed one part ammonia to ten parts water. After this step, flush the concrete thoroughly with clean water.

Ext, apply EXTOL BOND COAT by means of push broom, squeegee, roller or lambs wool applicator, spread evenly and work in or scrub into concrete.
Apply one coat only and do not allow build-up. Allow 24 hours to dry.

A base color coat of EXTOL 3000 is now to be applied using a rubber squeegee. The formula for this base coat is as follows.

• EXTOL 3000 Color – One Gallon
• Silica Sand – (60 or 90 mesh) 6-8 pounds
• Water – Up to .5 gallons

The sand and water shall have mixed with the EXTOL 3000 color by means of mortar type mixture to a uniform mix. The mixture must be workable but not over diluted so as to be too runny. The size of the sand determines speed of play- – 90 mesh results in faster play, 60 mesh is slower play.

The usual technique for applying the various coats is to make one pass across the width of the court with a 36 inch wide rubber squeegee. Apply coating evenly by walking in one direction across the court and then reversing direction and returning to starting point. Do not overwork and always maintain a wet edge. The procedure is repeated until the coating has been applied over the entire tennis court.

After a second application of this same mixture, the tennis court is ready for a finish (top) coat.

The mix for the finish (top) coat is as follows:

• EXTOL 3000 color – One Part
• Water One – half (.5) parts

This coat is applied in the same manner as the preceding coats. The tennis court is then ready for EXTOL white line marking paint.

III. PREVIOUSLY COLOR COATED AGED SURFACES:

The following guidelines describe the application of EXTOL 3000 color to a concrete tennis court that was previously coated and is in need of restoration.

Remove any loose coating by hydro blasting, sandblasting or grinding. Use a detergent and water to remove any dirt, oil, grease, or discoloration. Repair any cracks, depressions, or low areas. If bare spots exist, it may be necessary to Apply EXTOL BOND COAT (See specification ECC- 004)

After the concrete surface has been cleaned and repaired as necessary, the surface shall have a base coat applied- formula for which is as follows:

• EXTOL 3000 – Two parts
• Silica Sand (60 or 90 mesh) – One Part
• Water – One-half (0.5) part

The mixing and application of the base coat is undertaken in the same manner as described on the preceding page., A second base coat may be required.

After the base coat(s) have dried apply a finish (top) coat using the following formula:

• Extol 3000 – One Part
• Water – One-half (0.5) parts

After the finish coat has dried, snap chaulk lines to mark dimensions of the tennis court, mask playing line areas and apply EXTOL White Marking Line Paint.

IV. COVERAGE:

A minimum of ten gallons of undiluted Extol 3000 Color should be used per 1000 square feet of surface for the base coats and a minimum of six gallons of EXTOL 3000 (undiluted) per 1000 square feet.

CAUTIONS:
Color coatings are not to be applied when the surface or air temperature is below 50º F or above 130º F of if rain or fog is imminent.