Sika Thorocoat®-300 Arctic

• Alberta Transportation - Type 3 sealer

Sika Thorocoat®-300 Arctic is a high-build, waterborne acrylic coating.

18 months when properly stored

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

122-130 KU

Room-temperature flexibility

Algae Resistance

Dirt Pick-Up

Times assume 70° F (21° C) and 50% relative humidity.
To recoat: minimum of 6 hours.
Lower surface or air temperatures and higher relative humidity will extend the drying time.

*Two coats of Sika Thorocoat®-300 Arctic are required, or 1 coat of Sika Thorocoat®-749 Block Filler followed by 1 coat of Sika Thorocoat®-300 Arctic.

1. Surfaces should be clean and sound and free of all bond-inhibiting contaminants.
2. Concrete substrates may be coated after 7 days.
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 SP 3, per ICRI Guide 310.2.
6. Some stains may require chemical removal. Neutralize any cleaning compounds used and rinse with clean water.
7. Check the 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 a transition to old paint areas.
9. Treat cracks greater than 1/32” with Sika Thorocoat®-746 Knife Grade or SikaWall® FL 748. Treat cracks larger than 1/4” as expansion joints and fill with appropriate Sika sealant.
10. New CMU must have a base coat of Sika Thorocoat®-749 Block Filler.

1. Prior to use, mix Sika Thorocoat®-300 Arctic at a slow speed with a drill and mixing paddle to ensure uniform color and aggregate disbursement and to minimize air entrapment.
2. In multi-pail applications, mix the contents of each new pail into the partially used previous pail to ensure color consistency and smooth transitions from pail to pail.

1. Sika Thorocoat®-300 Arctic is meant to be applied as a two-coat system, achieving a total dry-film thickness (DFT) of 8 mils (0.2 mm) minimum.
2. Apply Sika Thorocoat®-300 Arctic by brush, spray, roller, or spray-and-backroll.
3. Maintain proper uniform wet-film thickness (WFT) during application to ensure the performance characteristics desired (see yield rates section).
4. Always work to a natural break and maintain a wet edge during application.
5. For uniformity of color and texture, application techniques must be consistent throughout the project.

Roller

1. Use a quality ¾–1¼" 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 a consistent appearance.

Spray

1. Equipment is available for spraying all grades of Sika Thorocoat®-300 Arctic. For fine texture, it is necessary to use a heavy-duty sprayer designed for the application of coatings that contain sand particles. Contact the equipment manufacturer for further recommendations.
2. Backrolling in one direction after spray application is recommended to achieve uniform texture and film thickness.

Brush

1. Application by brush is recommended only for small inaccessible areas, e.g., on touch-ups.
2. On open-textured surfaces, thoroughly work coating into surface texture or pores to fill completely. Flow the coating onto the surface using straight strokes.
3. Use a stiff-fiber or nylon short-bristled brush.

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