Sikalastic®-630

Sikalastic®-630 is classified under DOT regulations as Resin Solution, UN 1866, Class 3, PG II.

Sikalastic®-630 is a reactive methacrylate resin.

2 years when properly stored

Store in a cool, clean, dry area. Keep out of direct sunlight. Storage temperature is 60°F–80°F (15–27° C). Store in original and unopened container.

Specific Gravity

Allow one hour for Sikalastic®-630 to gain full mechanical properties. Check for dry-to-touch condition. End result should be a darker-colored, matte finish with a minimal surface film and some loose broadcast aggregate.

Sikalastic®-630: 100 ft²/gal (2.5 m²/L), depending on the number and volume of cracks as well as the porosity of the concrete.

For Best Performance

• The application temperature range of the substrate is between 40 and 104° F (5 and 40° C).
• DO NOT use for vertical surface treatments.
• Sikalastic®-630 is a sacrificial film that will wear out over time. However, the cracks will continue to be protected.
• Periodically inspect the applied material and repair localized areas as needed. Consult a Sika representative for additional information.
• Proper application is the responsibility of the user. Field visits by Sika personnel are for the purpose of making technical recommendations only and not for supervising or providing quality control on the jobsite.

1. Inspect the concrete substrate before preparation. Note the location of surface cracks and the presence of contaminants. Concrete surfaces must be dry and free of dust, dirt, oil, wax, curing compounds, efflorescence, laitance, and all other bond-breaking materials.
2. Inspect the underside of the deck for signs of leakage due to full-depth cracks.
3. Check the weather forecast to ensure dry conditions. Wet substrates must be allowed to dry prior to beginning work.
4. Using a dust-free, mobile shot blaster or grit blaster, brush-blast the substrate to expose surface cracking.
5. Do not use wet preparation methods.
6. Perform a second inspection, noting newly found surface cracks. Mark these for pre-treatment. Clean out cracks and the deck surface with oil-free compressed air.

Sikalastic®-630 must be mixed with the appropriate amount of Sikalastic®-918 FS just prior to application. Air/substrate temperature determines the amount as follows:

Sikalastic®-630 (quantity per 1 gallon)

* Please consult Sika Technical Services for applications outside this temperature range.

1. Sikalastic®-630 is applied as a flood coat in a gravity-fed process by broom or roller.
2. The contents of the mixed batch should be immediately poured onto the substrate and worked into cracks by distributing with ½" to ¾" (13–20 mm) nap solvent grade rollers or broom. Do not allow material to pond. The application rate is 100 ft²/gal (2.5 m²/L).
3. Do not allow the mixed batch to remain in the mixing vessel. It is advisable to randomly broadcast a 30 mesh (600 μm), dry aggregate into the wet, uncured resin at the rate of approximately 4 lb/100 ft² (200 g/m²).
4. The working time for Sikalastic®-630 is between 10 and 15 minutes once it has been applied to the substrate. The full cure to specification will be between 45 minutes and 1 hour.

Pre-Treat Wide Cracks
Cracks over 1⁄8" (3 mm) should be treated individually prior to deck application. Full-depth cracks may require alternative treatment to prevent runoff of resin. Fill wider cracks with dry 30 mesh silica sand. Mix a small amount of Sikalastic®-630, pour into cracks, and distribute with a paintbrush. Squeeze bottles can also be used.

Clean tools as needed with inhibited MMA, acetone, ethyl acetate or similar solvents.