Sikafloor®-1620

• Meets the requirements of CFIA and USDA for use in food plants

2 years in original unopened container under proper storage conditions

Store dry at temperatures between 5 °C to 32 °C (41 °F to 89 °F)

Protect from freezing. If frozen, contact Sika Canada. 

~99%

A:B  3:1 by volume

Condition product at temperatures between 18 °C and 30 °C (65 °F and 86 °F) before using.

Minimum: 10 °C (50 °F)  Maximum: 30 °C (85 °F)
Mixing and application attempted at material, ambient and/or substrate temperature conditions less than 18 °C (65 °F) will result in a decrease in product workability and slower cure rates.

Maximum 85 % (during application and curing)

Substrate must be at least 3 ˚C (5 ˚F) above the Dew Point to reduce the risk of condensation, which may lead to adhesion failure or “blushing” on the floor finish.  Be aware that the substrate temperature may be lower than the ambient temperature.

Minimum 10 °C (50 °F) / Maximum 30 °C (86 °F)

Do not apply while ambient and substrate temperatures are rising, as pinholes may occur. Ensure there is no vapour drive at the time of application. Refer to ASTM D4263, may be used for a visual indication of vapour drive.

Moisture content of concrete substrate must not exceed 6 % by mass (p.b.w. – part by weight) as measured with a Tramex^® CM/E concrete moisture meter on a mechanically-prepared surface (mechanical preparation to ICRI / CSP 3-4). Do not apply to concrete substrate with moisture levels exceeding 6 % mass (p.b.w. – part by weight) as measured with the above mentioned equipment. If moisture content of concrete substrate exceeds 6 % by mass (p.b.w. – part by weight) as measured with Tramex^® CM/E concrete moisture meter, use Sikafloor^®-81 EpoCem^®CA as a temporary moisture barrier top coated with Sikafloor®-1620 beneath the intended Sikafloor^®, Sikagard^® or Sikalastic^® system.

ASTM F2170 internal probe testing is not a substitute for measuring substrate moisture content with a Tramex® CME / CMExpert type concrete moisture meter as described above.  When relative humidity tests for concrete substrate are conducted per ASTM F2170 for project specific requirements, values must be ≤ 95 %. If values exceed 95 %, according to ASTM F2170, use Sikafloor^®-81 EpoCem^®CA as a temporary moisture barrier top coated with Sikafloor®-1620 beneath the intended Sikafloor^®, Sikagard^® or Sikalastic^® system.

Curing times will vary according to ambient air and substrate temperatures and relative humidity.

Freshly applied material should be protected from dampness, condensation, and water for at least 72 hours.

Mechanical, chemical, and physical properties will be fully achieved at full cure.

Before applying Sikafloor® Epoxy or Polyurethane on Sikafloor®-1620 allow:

Note: If the Waiting/ Recoat time has passed the previous coat must be lightly sanded, to remove all gloss; vacuum cleaning and solvent wiping will be necessary to remove all traces of dust. The surface should be a uniform dullness, with no gloss present after clean-up and before applying the next coat.

2.6 m²/L (106 ft²/US gal)  (15 mils w.f.t. per coat)

Note: Actual coverage rates and material consumption will depend upon porosity and profile of substrates. Test sections are recommended to establish correct coverage.

Mix Ratio: Components A:B = 3:1 (by volume)

Do not hand mix Sikafloor^® materials; mechanically mix only.  

IMPORTANT: Sikafloor®-1620 must be applied as supplied. The product contains a trace dye for quality control purposes so tinting is unnecessary and may result in loss of moisture tolerance.   Do not thin this product. Addition of thinners (e.g. water, solvent, etc.) will slow cure and reduce ultimate properties of this product. Use of thinners will void any applicable Sika^® warranty.

Pre-stir Components A and B separately, making sure all solids, including trace dye, are evenly distributed and uniform consistencies are achieved within each individual Component. Empty Component B (Hardener) in the correct mix ratio into Component A (Resin) or empty Component A into a suitably sized and clean pail and add Component B in the correct ratio. Blend the combined components thoroughly at low speed (300 - 450 rpm) for at least three (3) minutes using a drill fitted with an Exomixer^® or Jiffy type paddle suited to the dimensions of the mixing container and keep the mixing paddle in the mix to minimize entrapped air. Take care not to introduce any air bubbles while mixing. Make sure the contents are completely mixed to avoid any weak or partially cured spots in the coating. During the mixing operation, scrape down the sides and bottom of the container with a flat or straight edge trowel at least once to ensure complete mixing.  When completely mixed, Sikafloor®-1620 should be uniform in appearance and consistency.  Do not mix more material than can be applied within the working time limits (i.e. Pot Life) at the actual field temperature.

Concrete with Measured Moisture Content < 6 %
Apply one (1) coat of Sikafloor®-1620 with a squeegee at the rate of 2.6 m²/L (106 ft²/US gal) 15 mils w.f.t. thickness and back roll with pressure after 20 minutes. Coverage will vary depending on the porosity and profile of the prepared substrate. Do not apply by dipping roller into mixing container or a paint tray; instead pour a bead of the mixed material, in the form of a ribbon, onto the surface to be coated and then spread with a squeegee and back roll. Ensure that the Sikafloor®-1620 prime coat is pore- and pinhole-free and provides uniform and complete coverage over the entire concrete substrate.

Concrete with a Measured Moisture Content > 6 %

Apply a minimum 3 mm thick layer of Sikafloor^®-81 EpoCem^®CA following the application instructions published on the product data sheet. Once cured, apply one (1) coat of Sikafloor®-1620 with a squeegee at the rate of 2.6 m²/L (106 ft²/US gal) 15 mils wet film thickness and back roll with pressure after 20 minutes.   Do not apply by dipping roller into mixing container or a paint tray; instead pour a bead of the mixed material, in the form of a ribbon, onto the surface to be coated and then spread with a squeegee and back roll. Ensure that the Sikafloor®-1620 prime coat is pore- and pinhole-free and provides uniform and complete coverage over the entire Sikafloor^®-81 EpoCem^®CA substrate.

Clean all tools and equipment immediately with Sika^® Epoxy Cleaner. Once cured, product can only be removed mechanically.