Sikafloor® Duochem-942

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

Gloss 1 year in original, unopened packaging

Satin & Matte 6 months in original, unopened packaging.

Store and transport dry at 5 °C to 32 °C (41 °F to 89 °F). Condition product between 18 °C to 30 °C (65 °F to 86 °F) before using.

< 240 g/L

Contact Sika Canada

A : B = 2 : 1 by volume

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

Minimum 16 °C (61 °F)  Maximum 30 °C (85 °F)

Minimum 30 % / Maximum 75 % (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 16 °C (61 °F)  Maximum 30 °C (85 °F)

Mixing and Application attempted at Material, Ambient and/or Substrate Temperature conditions lower than 18 °C (65 °F) will result in a decrease in product workability and slower cure rates.

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 vapour drive.

Moisture content of concrete substrate must be ≤ 4 % by mass (pbw – part by weight) as measured with a Tramex® CME/CMExpert type concrete moisture meter on mechanically-prepared surface according to this product data sheet (preparation to CSP-3 to CSP-4 as per ICRI guidelines). Do not apply to concrete substrate with moisture levels > 4 % mass (pbw – part by weight) as measured with Tramex® CME/CMExpert type concrete moisture meter. If moisture content of concrete substrate exceeds 4% by mass (pbw – part by weight) as measured with Tramex® CME/CMExpert type concrete moisture meter, use Sikafloor® 1610,or Sikafloor® 81 EpoCem®, or Sikafloor®-22NA or -24NA PurCem®.

  
When relative humidity tests for concrete substrate are conducted per ASTM F2170 for project specific requirements, values must be ≤ 85 %. If values exceed 85 %, according to ASTM F2170, use Sikafloor®-1610,or Sikafloor®-81 EpoCem®, or Sikafloor®-22NA or -24NA PurCem®.
ASTM F2170 testing is not a substitute for measuring substrate moisture content with a Tramex® CME/CMExpert type concrete moisture meter as described above.

~2 hours at 21 °C (70 °F)

Freshly applied material should be protected from dampness, condensation and water for at least 72 hours.
Curing times will vary according to anbient air, substrate temperature and relative air humidity.

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.

Primer: Sikafloor® 2002 (clear coating) or Sikafloor® 261 (pigmented coating) applied at a rate of 4 m²/L (165 ft²/US gal.) at 10 mil d.f.t. per coat.
Finish Coat: Sikafloor® Duochem-942 applied at a rate of 9.5 m²/L to 10 m²/L (385 ft²/US gal. to 405 ft²/US gal.) at 4 mil w.f.t. / 2.3 mil d.f.t. per coat. Two (2) coats are recommended.
Thinning Solvent: Sika Urethane Thinner and Cleaner: maximum 10 % by volume (if required). 100 mL/L  (12.8 oz / US gal.) contact Sika Technical Services for additional information.

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 opacity with light (ie white) or bright colours (i.e. reds and yellows) and dark substrates. Test sections are recommended to establish correct coverage.

Mixing Ratio (A:B) = 2:1 by volume.

Do not hand mix Sikafloor® materials. Mechanical mixing only. Pre-stir each component to ensure all solids are evenly distributed and even colours and consistencies are achieved within each component.Where supply format permits, empty Component B into A or, in the ratio of 2 : 1 by volume Component A: Component B, empty material into a suitably sized and clean mixing vessel and thoroughly mix for three (3) minutes using a low-speed drill (300 - 450 rpm) fitted with an Exomixer® type mixing-paddle (recommended model). To minimize entrapping air, ensure mixing paddle is kept in the material. During the mixing operation, scrape down the sides and bottom of the pail with a flat orstraight-edge trowel at least once to ensure thorough mixing. Sikafloor® Duochem-942 should be uniform in colour or clarity and consistency before use.

Mix only the quantity you can use within its pot life.

Optional Sikafloor®-4 Texture - Ceramic Spherical Wear Aggregate  See Sikafloor®-4 Texture individual product data sheet for addition rate and Mixing Instructions.

Primer: Apply Sikafloor® 2002 (clear coating) or  Sikafloor® 261 (pigmented coating) over the slab as a primer using a notched squeegee and/or roller at a uniform coverage rate of approximately 4 m²/L (165 ft²/US gal.) without ponding. Allow the primer to cure for 12 hours at 23 °C (73 °F) before applying Sikafloor® Duochem-942.

Finish Coat: Sikafloor® Duochem-942 may be applied using conventional or airless spray, high quality, short nap rollers (lint-free), natural bristled brush or squeegee and backrolled. Waiting time between coats will be approximately 8 hours to 24 hours dependent upon temperatures.

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