Sikafloor®-2540 W NA

Potential of contribution towards LEED®v4 credits. Contact Sika Canada

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

1 year in original, unopened packaging.

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

Protect from freezing and high temperatures; discard if frozen.

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

~61.5 % (+/- 5 %) - Depending upon colour

~6 g/L

Chemical Resistance Consult Sika Canada

A:B = 2:3 by volume

Condition product between 18 °C to 24 °C (65 °F to 75 °F)

Minimum 10 °C (50 °F)   Maximum 30 °C (85 °F)

Maximum 75 % (during application and curing).

Sikafloor®-2540 W NA should not be applied when the ambient air relative humidity is > 75% as curing times will be longer and water will be retained in the film reducing ultimate coating performance.  Provide adequate fresh air ventilation to remove the excess moisture from the curing product.

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.

50°F (10°C) min./86°F (30°C) max.

Moisture content of concrete substrate must be ≤ 6 % by mass (pbw– part by weight) as measured with a Tramex® CME/CMEX type concrete moisture meter on mechanically prepared surface according to this product data sheet (preparation ICRI / CSP 2-3).  ASTM F2170 testing is not a substitute for measuring substrate moisture content. Use a Tramex® CME/CMEX type concrete moisture meter as described above.

Minimum age of concrete: 28 days depending on curing and drying conditions.

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

Full Cure: ~7 days at 23 °C (73 °F).

NOTE: Drying times will vary according to air and substrate temperature and relative humidity.

Freshly applied material should be protected from dampness, condensation and water for at least 24 hours

Approximately 4 m²/L to 5 m²/L (163 ft²/US gal. to 203 ft²/US gal.) at 8 to 10 mil w.f.t. / 4 to 5 mil d.f.t. per coat
Two (2) coats recommended for optimum service.

Note: Actual coverage rates and material consumption will depend upon porosity and profile of substrates. Allowance must be also made for variation in film thickness or number of coats required to achieve complete coverage of surfaces. Test sections are recommended to establish correct coverage.

Mixing Ratio - A:B = 2:3 by volume

Do not hand mix Sikafloor® materials. Mechanical mixing only.  

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. Improper mixing procedure or incorrect mixing ratio may result in moisture sensitivity, whitening, slow cure, soft spots, and other defects.

Pre-stir each component to ensure all soft settling is dispersed, solids are evenly distributed and even colours and consistencies are achieved within each component.

Empty Component A (Resin) in the correct mix ratio into B (Hardener). Mix the combined components for at least three (3) minutes using a low speed drill (300 - 450 rpm) and Exomixer® or Jiffy type paddle suited to the volume of the pail to minimize entrapped air. Be careful 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®-2540 W NA should be uniform in colour 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. 

Apply coating by squeegee at the rate of 4 m²/L to 5 m²/L (163 ft²/US gal. to 203 ft²/US gal.) at 8 - 10 mil wet film thickness (w.f.t.) and back-roll with pressure using a high quality (lint-free) roller.  Coverage will vary depending on the porosity of the prepared floor. 

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

Once hardened, product can only be removed mechanically. Clean tools and brushes with Sika® Epoxy Cleaner.