Inspection

• The surface must be structurally sound, clean, dry and free of grease, paint, oil, dust, curing agents, laitance or any foreign material that will prevent proper adhesion.
• The concrete should be at least 2,500 PSI and porous or rough enough to allow the product to soak in.
• A minimum of 28 days curing time is required on all concrete.
• Prior to starting work, test existing concrete slab for efflorescence, moisture, and hydrostatic pressure.

Preparation

• Pre-cut and clean all cracks and joints with a concrete diamond blade to at least 1/4 x 1/4 inch.
• Prepare concrete to a profile equal to CSP 3-4 as specified by ICRI.
• Methods may vary according to the condition and hardness of the concrete.
• Other factors include the forecasted use of the surface and the environment in which it is to be installed.
• When preparing the surface use caution when shot blasting, scarifying too aggressively, leaving grind marks, or grinding too smooth.

Moisture

• All concrete should be tested for moisture before applying a seamless coating.
• If moisture emissions exceed 5 lbs/1000 square feet/24 hours (ASTM F1869) or if the relative humidity (RH) exceeds 75% (ASTM F2170), contact the manufacturer before application.

Mixing

• Premix each component separately.
• In a clean bucket, mix 2 parts A with 1 part B (by volume) of EC-32.
• Mix thoroughly with a low speed (400-600 rpm) drill motor for 3-4 minutes.
• Make sure to scrape the sides and bottom of the container during mixing.
• After mixing is completed, remove material from container within 5 minutes, as epoxy will begin to generate heat.
• Spread immediately onto the floor. As product is spread out, you will have longer working time (10-15 minutes at 70°F).

Thinning

• EC-32 can be thinned with up to 100% (equal parts) CA-23 or acetone, by volume.
• If thinned, it must be applied thinly enough to allow solvent to escape (minimum of 300 square feet per gallon).
• As a primer: EC-32 may be thinned with up to 100% CA-23 or acetone.
• As a coating: EC-32 may be thinned with 10-20% CA-23 or acetone.
• As a mortar: thinning is not recommended.

Coverage

• Coverage will vary depending on the condition of surface and desired thickness.
• As a coating: 100-300 square feet per gallon.
• As a sealer: 300-500 square feet per gallon.
• As a mortar: 30-60 square feet per gallon.

Applying product

• As a primer:
  • Spray or squeegee and backroll thinned EC-32 onto the surface.
  • Primer coat should be applied evenly and worked into the surface to help seal and avoid pinholes.
  • When thinned, apply EC-32 at a maximum of 5 mils.
  • Do not allow material to puddle.
• As a coating:
  • Apply EC-32 within 24 hours after the primer coat.
  • Immediately after mixing, spread a strip of material onto the surface along the edges where it will be “cut in” using a brush.
  • Pour the remaining material near the “cut in” area and spread evenly using a trowel or squeegee and back roll using a 1/4 inch nap, non-shedding roller.
  • A notched trowel or squeegee will help regulate the thickness and a porcupine roller will help to release trapped air and minimize bubbles.
  • Depending on the look, thickness, chemical, and abrasion resistant desired, 1 to 2 coats may be applied.
• As a sealer:
  • EC-32 may be sprayed, brushed, or rolled.
  • If rolled, neatly cut-in all edges with a brush and roll the center using a 1/2 inch to 3/4 inch nap, good quality, roller cover.
  • Be sure to spread evenly in a “V” pattern rolling in both directions.
  • Roll product as thin as possible.
  • If spraying, use a pump type or airless sprayer after thinning and be sure to spray evenly.
• For an epoxy mortar:
  • To create the mortar mix, combine mixed EC-32 with aggregate, at a rate of 50-100 pounds per gallon, depending on aggregate and desired psi.
  • Within 24 hours of primer, spread the prepared mortar mix evenly with a trowel.
  • Read Epoxy Mortar or Epoxy Mortar Quartz System Specification Sheet for details.

Dry time

• You may re-coat as soon as the surface is dry to touch or in about 8-10 hours, but no later than 24 hours.
• Light foot traffic may be permitted in 24 hours, heavy foot traffic in 48 hours and vehicle traffic in 3 days.
• All times are based on average temperature of 70°F and 50% humidity.
• Cooler temperatures will increase drying time.

Clean up

• Uncured material should be removed with an environmentally-safe solvent.
• Cured material should be removed mechanically.

Limitations

• This product is designed for professional use only.
• Be sure to measure and mix properly. Be aware of the pot life of mixed epoxy.
• Do not apply when temperatures are below 50°F and 90°F. Hot or cold weather will affect dry times.
• Epoxy must be cured for minimum of 24 hours before coming contact with water.
• Skid resistant additives are available, such as CA-30 or CA-31.
• For interior use only unless protected by a UV resistant coating.
• Solvents may be required in cooler weather to lower viscosity and increase coverage of 100% solids.
• Please check with local laws governing the use of solvents.
• Do not allow Westcoat products to freeze.

EC-32 High Build Clear Epoxy Topcoat Datasheet