Sikafloor® Duochem-9205

• Conformity with LEED®v4 MR Credit (Option 1): Building Product Disclosure and Optimization – Environmental Product Declarations
• Conformity with LEED®v4 MR Credit (Option 1): Building Product Disclosure and Optimization - Material Ingredients Reporting
• Conformity with LEED®v4 MR Credit (Option 1): Building Product Disclosure and Optimization - Sourcing of Raw Materials

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

2 years in original, unopened packaging. 

Store dry between 5 °C and 32 °C (41 °F and 89 °F)

~100 %

~1 g/L

Minimum: 0 °C (32 °F) / Maximum: 50 °C (122 °F)

Consult Sika Canada

A:B= 2:1 by volume

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

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

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).

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.

Moisture content of concrete substrate must be < 4 % (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 ICRI / CSP 3 - 4).  If moisture content of concrete substrate exceeds 4 % (pbw – part by weight) as measured with Tramex® CME/CMExpert type concrete moisture meter, use Sikafloor®-1610 or Sikafloor®-81 EpoCem®CA or Sikafloor®-22NA or -24 NA 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®CA or Sikafloor®-22NA or -24 NA 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.

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.

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

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

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

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.

2.0 m²/L to 4 m²/L (80 ft²/US gal. to 160 ft²/US gal.) at 10 mil to 20 mil w.f.t.

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.

The concrete surface must be clean and sound.

Remove any dust, laitance, grease, oil, dirt, curing agents, impregnations, wax, foreign matters, coatings and deleterious material from the surface by any appropriate mechanical means, in order to achieve a profile equivalent to ICRI-CSP 3 - 4.  The compressive strength of the concrete should be at least 25 MPa (3625 psi) at 28 days and at least 1.5 MPa (218 psi) in tension at the time of application of Sikafloor® Duochem-9205.

Mixing Ratio - A:B = 2:1 by volume

Do not hand mix Sikafloor® materials. Mechanically mix only.  Pre-stir Components A and B separately, making sure all solids, 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. 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. Upon completion of mixing, Sikafloor® Duochem-9205 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.

Primer: Apply neat Sikafloor® Duochem-9205 over the prepared concrete slab as a primer using a brush, roller or squeegee at a uniform coverage without ponding. Allow primer to cure sufficiently to be able to resist foot traffic without damaging the surface.

Broadcast binder: When the primer coat has cured sufficiently to allow foot traffic, apply a neat broadcast binder coat of Sikafloor® Duochem-9205 by squeegee and backroll immediately with a roller to provide a uniform surface. Broadcast selected aggregate or flakes into the wet Sikafloor® Duochem-9205 binder, to “saturation”. Broadcast in a manner so that the aggregate falls vertically into the binder. Allow the broadcast layer to cure sufficiently to be able to resist foot traffic, without damaging the surface, before proceeding with the second broadcast application or top coats.

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