Sika Thorocoat®-250

Sika Thorocoat®-250 contains water, acrylic emulsion, fillers,  and other proprietary ingredients.

18 months when properly stored

Store in unopened containers in a clean, dry area. Protect from freezing.

Times assume 70 °F (21 °C) and 50% relative humidity.

• To touch: 1 – 2 hours
• To recoat: 2 – 4 hours
• To full cure: 5 days

Lower surface or air temperatures and higher relative humidity can extend dry time.

1. Surfaces should be clean and sound and free of all bond-inhibiting contaminants.
2. Concrete substrates should be fully cured.
3. Repair any holes, spalled and damaged concrete with appropriate Sika repair materials. Allow appropriate cure time prior to coating.
4. Remove any protruding concrete accessories and smooth out any surface irregularities.
5. High-pressure power wash surface (or abrasive blast on hard, dense surfaces) to create a profile of SP3, per ICRI Guide 310.2.
6. Some stains may require chemical removal. Neutralize any cleaning compounds used and rinse with clean water.
7. Check adhesion of old coatings according to ASTM D 3359, Measuring Adhesion by Tape Test Method A.
8. Remove any blisters or delaminated areas and sand edges to smooth rough areas and provide transition to old paint areas.
9. Sika Thorocoat®-250 is not a crack filling or crack bridging coating. For substrates with cracks, refer to Sika Thorolastic®-750 product data sheet.
10. Chalky surfaces should be primed with Sika Thorocoat®-100 Primer or Sika Thorocoat®-200 Primer.

1. Prior to use, mix Sika Thorocoat®-250 at slow speed with a drill and mixing paddle to ensure uniform color and to minimize air entrapment.
2. In multi-pail applications, mix the contents of each new pail into the partially used pail to ensure color consistency and smooth transitions from pail to pail.

Application as a Primer

1. Apply Sika Thorocoat®-250 by brush, spray, roller, or spray-and-backroll
2. Maintain primer uniform wet-film thickness (WFT) to ensure proper sealing of substrates.

Application as a Topcoat 

1. Apply Sika Thorocoat®-250 by brush, spray, roller, or spray-and-backroll.
2. Maintain proper uniform wet-film thickness (WFT) during application to ensure the performance characteristics desired (See yield rates section).
3. Always work to a natural break and maintain a wet edge during application.
4. For uniformity of color, application techniques must be consistent throughout the project.

Roller

1. Use a quality 3/4 – 1-1/4" nap roller cover.
2. Completely saturate the roller and keep it loaded with the coating to build the required mils. Never dry roll.
3. Cross roll, maintaining a wet edge, to achieve uniform thickness. Backroll in one direction for consistent appearance.

Spray

1. Equipment is available for spraying Sika Thorocoat®-250. Contact equipment manufacturer for further recommendtions.
2. Backrolling in one direction after spray application is recommended to achieve uniform film thickness.

Brush

1. Application by brush is recommended only for small, inaccessible areas, e.g., on touch-ups.
2. Use only nylon brushes.

Clean all tools and equipment immediately with water. Cured material may be removed by mechanical means.