Sika® Ucrete® UD 200 SR

• Environmental Product Declaration (EPD) in accordance with EN 15804. EPD independently verified by Institut für Bauen und Umwelt e.V. (IBU)

• Specific Environmental Product Declaration (EPD) in accordance with EN 15804. EPD independently verified by EPD International AB

• Halal Certification Europe (HCE), Sika® Ucrete®, WHFC, Certificate No. 21453-2/1/1/Y3

• Food and Beverage Facilities Suitability, Sika® Ucrete®, HACCP, Test Report No. I-PE-769-SA-2-RG-07

• Indoor Air Comfort Gold EN 16516, Sika® Ucrete®, eurofins, Certificate No. IACG-321-01-01-2024D

• Reaction to fire EN 13501-1, Sika® Ucrete® Trowel Systems, GHENT, Test Report No. CR 24-0478-01

• CE marking and declaration of performance based on EN 13813:2002 Screed material and floor screeds — Screed material — Properties and requirements — Synthetic resin screed material

Water-based polyurethane cement hybrid

The Product must be stored in original, unopened and undamaged sealed packaging in dry conditions at temperatures between 40 °F and 85 °F. Always refer to the packaging.

Refer to the current Safety Data Sheet for information on safe handling and storage.

Laboratory-defined resistance to many individual chemicals. Before proceeding, contact Sika Technical Service for specific information.

1 x Part 1 : 1 x Part 2 : 2 x Part 3 : 1 x Part 4

Mix full units only

~1/4–1/2 in

Note: Times are approximate and will be affected by changing ambient and substrate conditions.

Concrete surfaces must be clean and sound. Remove all dust, dirt, existing paint films, efflorescence, exudates, laitance, forms oils, hydraulic or fuel oils, brake fluid, grease, fungus, mildew, biological residues or any other contaminants which may prohibit a good bond.

Prepare the surface by any appropriate mechanical means, in order to achieve a profile equivalent to ICRI CSP 3-6. The compressive strength of the concrete substrate should be at least 3,625 psi (25 MPa) at 28 days and a minimum of 218 psi (1.5 MPa) in tensile at the time of application.

Repairs to cementitious substrates, filling of blowholes, leveling of irregularities, etc. should be carried out using an appropriate Sika profiling mortar. Contact Sika Technical Service for a recommendation.

Edge Terminations

All free edges of a Sika® Ucrete® floor, whether at the perimeter, along gutters or at drains require extra anchorage to distribute mechanical and thermal stresses. This is best achieved by forming or cutting grooves in the concrete. Grooves should have a depth and width of 2 times thickness of the Sika® Ucrete® floor.

If necessary, protect all free edges with mechanically attached metal strips. Do not featheredge, always turn into an anchor groove.

Expansion Joints

Expansion joints should be provided in the substrates at the intersection of dissimilar materials. Isolate areas subject to thermal stresses, vibration movements or around load-bearing columns and at vessel sealing rings. Refer to details provided at http://usa.sika.com.

Priming

Substrate priming is normally not required under typical circumstances. However, due to variations in concrete quality, surface conditions, surface preparation and ambient conditions, test areas are recommended to determine whether priming is required to prevent the possibility of outgassing blisters, debonding, pinholes and other aesthetic variations.

Standard primer procedure is a 15-20 mils scratch coat of Sika® Ucrete® TC31 NA or Sika® Ucrete® HS24 NA and light broadcasting of dry quartz sand. This is the preferred method for concrete substrates.

Part 1 : Part 2 : 2xPart 3 : Part 4 = Mix full units only

Mixing will be affected by temperature; condition materials to 60° - 72 °F for optimum performance. The Sika® Ucrete® UD 200 Part 1 is a white liquid which can separate into a clear and oily mixture over time. The container should be lightly shaken before use.

Add the liquid components (Part 1, Part 2, and Part 4) to the mixer and blend for 20–60 seconds until uniform depending upon mixer efficiency. Normally 30 seconds when mixed with a drill and jiffy paddle, and for up to 1 minute when mixed in a large mortar mixer.

Add Part 3 pouring slowly over a period of 20 seconds while mixing continues. Do not dump the powder into the liquids. Mix until the aggregate is thoroughly dispersed and the mix is uniform, typically 2 1/2 - 3 minutes. Sika® Ucrete® is a balanced system, it is important that all of each of the components are added to the mixer, failure to do so is likely to result in blistering of the floor.

Sika® Ucrete® UD 200 SR is typically applied using a screed box and finished with standard steel plastering or concrete finishing trowels. Serrated trowels must not be used. The mixed material contains sufficient resin to properly wet the concrete substrate under normal conditions; therefore, a primer is not required. After screeding the material should be finished with trowels to compact the mortar and close any voids or screed lines. Once finished, the surface may be lightly rolled (1-2 passes) using a loop roller or 1/4" - 3/8" short nap roller to assist in removing minor imperfections or trowel marks. Excessive finish troweling or rolling should be avoided, as it may adversely affect the anti-slip characteristics of the finish.