Sikalastic®-658

Sikalastic®-658 is a 100% acrylic formula with silicon dioxide (quartz aggregate).

Sikalastic®-658 Primer:

Type: Acrylic

2 years when properly stored

Store in unopened containers in a cool, clean dry area. Do not allow any Sikalastic®-658 product to freeze in the container; do not store below 35 °F (2 °C).

Sikalastic®-658

63%

Sikalastic®-658 Primer

22%

Sikalastic®-658

47%

Sikalastic®-658 Primer

20%

Sikalastic®-658

120 KU at 77 °F (25 °C)

Sikalastic®-658 Primer

100 sec (#1 Zahn cup)

At 70 °F (21 °C) and 50% relative humidity:

• 4 hours between coats
• 8 hours for light foot traffic
• 24–36 hours for heavy pedestrian traffic

Application at cooler temperatures or high humidity will greatly extend drying times.

Sikalastic®-658 Primer
250–300 ft2/gal (6.1–7.4 m2/L) to achieve a 1 dry-mil (0.025 mm) thickness

Concrete Surfaces

1. Floors must be structurally sound, fully cured, clean, and dry.
2. Holes, crevices, and spalled or disintegrated portions must be properly patched and filled; consult Technical Service for the appropriate concrete repair product.
3. All oil, grease, dirt, debris, mortar, paint drippings, curing and parting compounds, and other surface treatments such as hardeners or sealers must be removed.
4. Mechanical surface profiling is the preferred floor preparation method. Mechanically profile the floor to a medium-grit sandpaper texture and remove curing and parting compounds and other surface hardeners and floor coatings. The key is to create a surface profile that will enable the coating to penetrate.

Asphalt Surfaces

1. New asphalt must weather a minimum of 60 days before application of Sikalastic®-658. Rake out all cracks to remove accumulated sand, mud, and weeds. Thoroughly hose down the surface to remove sand and sediment.
2. Scrub oil-soaked areas with a strong solution of detergent and hot water. Rinse the area thoroughly with clear water, squeegee off excess, and allow to dry for 1 to 3 days. When dry, check the surface for any dirt or debris. If more than a trace is present, remove it with compressed air or a vacuum.
3. Repair holes and cracks with a suitable sealant, filler, or patching material.
4. Press or squeeze the patch firmly into place
5. with a putty knife or trowel. Level off with adjacent surface.
6. Allow a minimum of 24 hours before topcoating. Do not apply in cracks wider than ½" (13 mm).

Priming (Concrete Only)
Only required when Sikalastic®-658 is subjected to freeze-thaw environmental conditions.

1. Apply Sikalastic®-658 Primer at the rate of 250–300 ft²/gallon (6.1–7.4 m²/L). Apply Sikalastic®-658 over the primer within 30 minutes while the surface still has a slight tack to it. In shady conditions apply Sikalastic®-658 within 4 hours.
2. To improve the subsequent application of Sikalastic®-658 acrylic coating, use approximately 1–2 lbs/gallon (0.12–0.24 kg/L) of fine-grain, dry silica sand directly with Sikalastic®-658 Primer; lightly broadcast the sand onto the material while it is still wet. This will prevent the roller or squeegee from slipping when Sikalastic®-658 is applied.

Application

1. Stir Sikalastic®-658 well before using. Whenever possible, apply Sikalastic®-658 out of direct sun and during the cooler hours of the day.
2. Sikalastic®-658 may be applied using a 3⁄8" (10 mm) roller cover or wide-blade rubber squeegee. Dampen the squeegee or roller before using it and shake off excess water.
3. Pour Sikalastic®-658 in a continuous stream along one edge of the area to be coated. In hot or sunny conditions, up to ½ gallon (1.9 L) of water per 5 gallon (18.93 L) pail may be added to improve the flow and application.
4. Spread evenly in short windrows. Continue pouring and spreading Sikalastic®-658, overlapping 50% into the wet edge of the previous pass. For roller applications, finish the coating in one direction to prevent shading variations.
5. Allow the first coat to dry thoroughly before applying a second. For the best finish, apply the second coat at a right angle to the first.

Top Coating

For heavier foot traffic or stain and dirt resistance, top coat the fully dried and cured Sikalastic®-658 with Sikafloor® CC 1315 (see form No. 1017913).

Clean tools and equipment with soap and water.