Sikagard®-170 CR

Sikagard®-170 CR is a 100% solids Novolac Epoxy

2 years when properly stored

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

Mixed Viscosity

Based on 7-day immersion test at 70° F (21° C) after a 7 day cure at 70° F (21° C) and 50% relative humidity

2 to 1 by volume

50–120 ° F (10–49 ° C)

Initial Cure

24 hrs at 75° F (24° C)

Light Traffic

16 hrs at 75° F (24° C)

Full Chemical Resistance

7 days at 75° F (24° C)

4–6 hrs at 75° F (24° C)

80 ft² per gal (2 m²/L) at 20 mils

• The minimum ambient, surface, and material temperature should be 50° F (10° C) and rising at the time of application.
• Acceptable service temperatures vary depending on the type and frequency of chemical exposure. Contact Technical Service regarding your unique project considerations.
• For professional use only; not for sale to or use by the general public.
• Make certain the most current versions of the product data sheet and SDS are being used.
• Proper application is the responsibility of the user. Field visits by Sika personnel are for the purpose of making technical recommendations only and are not for supervising or providing quality control on the jobsite.

1. The surface must be clean, structurally sound, and fully cured for 28 days.
2. Mechanically profile the surface of both old and new concrete by shotblasting to ICRI CSP 4, then remove dust by vacuuming.
3. Prime with SikaEmaco® P 130

Priming

1. Prime the prepared substrate with SikaEmaco® P 130. Apply SikaEmaco® P 130 at a coverage rate of 150–300 ft²/gallon (3.6–7.4 m²/L). Refer to the SikaEmaco® P 130 data sheet for more details or call Sika Technical Service.
2. Allow SikaEmaco® P 130 to become tack-free (approximately 3–4 hours) before applying Sikagard®-170 CR.

1. Precondition all components to 70° F (21° C) for 24 hours before using.
2. Thoroughly stir each separate component (epoxy resin Part A and the hardener Part B) before mixing the 2 components together.
3. The mix ratio by volume is 2:1 (A:B). Combine 1 part B with 2 parts A in a clean, suitably sized container. Scrape the sides of the containers to remove as much material as possible to ensure an accurate mixing ratio.
4. Mix the components together using a slow-speed (400–600 rpm) drill with a Jiffy mixer for at least 3 minutes until uniform in color with no streaks of color in the mixture.

As A Coating For Concrete Substrates

1. Apply the mixed product to the clean, primed surface with a roller or brush. Use the shortest nap roller suitable for the prepared substrate profile.
2. Backroll the coating to ensure good wetting of the substrate, uniform thickness of the coating, and removal of any roller marks.
3. Apply two 20-mil coats at the rate of 80 ft²/ gal (2 m²/L) per coat.
4. To make the coating slip-resistant, broadcast clean, dry sand into the first coat while it is wet. Apply sand to the point of saturation (approximately 80 lbs/100 ft² [3.9 kg/m²]). When the coating is dry, sweep excess sand and apply the second coat of Sikagard®-170 CR.
5. Recoating must be done within 24 hours at 70° F (21° C). After 24 hours, mechanically abrade the entire surface of the coating and clean it with acetone or xylene. Allow Sikagard®-170 CR to dry and reapply the coating within 1 hour.

As A Topcoat For Epoxy Or Polyurethane Floor And Wall Coatings

1. When applying Sikagard®-170 CR over an existing coating, first conduct a test application.
2. Lightly sand the surface with medium sandpaper or a 60–80 mesh 3M screen back. Vacuum up all dust and solvent and wipe the floor with acetone. Allow to dry.
3. Apply the Sikagard®-170 CR within 1 hour and according to application instructions.

As A Trowel-down Topping

1. After mixing, slowly add 2–3 parts clean, dry sand by volume to 1 part mixed Sikagard®-170 CR epoxy by volume.
2. Trowel or screed the sand-modified Sikagard®-170 CR to the desired thickness (minimum ¼" or 6 mm).

Tack-free: approximately 4–6 hours
Traffic ready: 24 hours
Fully cured: 7 days at 75° F (24° C) and 50% relative humidity

• Clean equipment immediately after use with xylene.
• Clean hands and skin immediately with soap and water, industrial hand cleaner, or denatured alcohol.
• Cured material can be removed by mechanical means only.