- Product: Sika Ucrete UD 200 — heavy-duty polyurethane cement wearing-layer screed (water-based polyurethane cement hybrid)
- Service Temperature (by thickness):
- – 1/4″ floor: -13°F to 176°F
- – 3/8″ floor: -40°F to 248°F
- – 1/2″ floor: -40°F to 266°F (occasional spillage to 302°F)
- Mechanical: 7,977 psi compressive (ASTM C579); >290 psi tensile adhesion, concrete failure (ASTM D4541); 2,030 psi flexural (ASTM C580)
- Thermal Expansion: 2.2 x 10^-5 per °F (ASTM C531) — similar to concrete
- Thickness & Coverage: ~1/4″ to 1/2″; 22 ft²/kit at 1/4″, 16 ft²/kit at 3/8″, 11 ft²/kit at 1/2″
- Return to Traffic: under 24 hours at 46°F substrate; 4 hours at 50°F with Sika Ucrete Accelerator
- Substrate Tolerance: applies to 7-day-old concrete and 3-day-old polymer screed; tolerant of high-moisture substrates; no standing water (minimum substrate 3,625 psi compressive / 217 psi tensile)
- Hygiene & Approvals:
- – Does not support bacterial or mold growth; impermeable to liquids; non-tainting
- – Food and Beverage Facilities Suitability (HACCP test report I-PE-769-SA-2-RG-06b)
- – Halal Certification Europe (HCE); Indoor Air Comfort Gold EN 16516 (eurofins)
- – Reaction to Fire Class Bfl-s1 (EN 13501-1)
- Installation: Sika Installer; in-house W-2 crews mobilize nationwide
Phone: +1 (844) 687-1961
Sika Ucrete UD 200 (formerly Ucrete UD 200) is a heavy-duty polyurethane cement wearing-layer screed — a lightly textured, slip-resistant floor finish with very good resistance to aggressive chemicals, heavy impact, and high temperatures, used across food and beverage, pharmaceutical, and chemical processing facilities. It is a water-based polyurethane cement hybrid, not a thin-film coating, with a thermal expansion coefficient close to concrete so the floor moves with the slab through thermal cycling. Its service temperature is set by installed thickness, which is the single most important number on this data sheet: a thicker screed carries a wider temperature range. Craftsman Concrete Floors installs Sika Ucrete UD 200 systems nationwide as a Sika Certified Installer.
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About Sika Ucrete UD 200
Sika Ucrete UD 200 is the heavy-duty wearing-layer screed in the Sika Ucrete flooring system, specified where a floor has to take aggressive chemicals, heavy impact, and steam cleaning at industrial temperatures. Three things on the data sheet drive the specification: the thickness-to-temperature relationship, chemical and mechanical resistance, and the substrate and installation window.
Thickness Determines Service Temperature
The most important relationship on the Sika Ucrete UD 200 data sheet is between installed thickness and service temperature. At 1/4 inch, the floor is rated -13°F to 176°F and resists liquid spillage with light steam cleaning. At 3/8 inch, it carries -40°F to 248°F and is fully steam-cleanable — this is the thickness required for freezer service down to -40°F. At 1/2 inch, it handles -40°F to 266°F with occasional spillage to 302°F. Specifying a thin build for a cold condition is the most common Ucrete UD 200 spec error: a 1/4 inch floor will not survive -40°F freezer service.
Chemical, Impact, and Steam-Clean Resistance
Sika Ucrete UD 200 is a heavy-duty screed with very good resistance to a wide range of chemicals and very good mechanical resistance to heavy impact. It is impermeable to liquids, does not support bacterial or mold growth, and is non-tainting from the end of mixing. Steam-cleanability scales with thickness — light steam cleaning at 1/4 inch, fully steam-cleanable at 3/8 inch and above. Because chemical resistance is defined per individual chemical, Sika Technical Service confirms resistance to a specific exposure before the system is specified for an aggressive process environment.
Substrate Tolerance and Installation Window
The screed applies to 7-day-old concrete and 3-day-old polymer screed, and tolerates substrates with higher moisture content than epoxy allows — it can go down on green or damp concrete with no standing water, though at least three days is allowed for early concrete shrinkage so reflective cracking does not telegraph through the wearing surface. The substrate must be structurally sound, minimum 3,625 psi compressive and 217 psi tensile, clean and free of laitance and contaminants. Return to traffic is under 24 hours at a 46°F substrate, or about 4 hours at 50°F with Sika Ucrete Accelerator. Static and dynamic cracks are pre-treated with Sikadur or Sikafloor resins before the wearing layer goes down.
urethane Cement Flooring Knowledge Center
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Frequently Asked Questions
It depends on installed thickness. A 1/4 inch floor is rated -13°F to 176°F; a 3/8 inch floor carries -40°F to 248°F; a 1/2 inch floor handles -40°F to 266°F with occasional spillage to 302°F. The thicker the screed, the wider the temperature range it tolerates.
3/8 inch. A 3/8 inch Sika Ucrete UD 200 floor is rated for freezer temperatures down to -40°F and is fully steam-cleanable. The 1/4 inch build is only rated to -13°F and is not suitable for low-temperature freezer floors.
Yes, and it scales with thickness. A 1/4 inch floor can be lightly steam-cleaned; 3/8 inch and 1/2 inch floors are fully steam-cleanable. The system is impermeable to liquids and does not support bacterial or mold growth.
Under 24 hours at a 46°F substrate temperature. With Sika Ucrete Accelerator at 50°F, return to traffic drops to about 4 hours. Times are approximate and vary with ambient and substrate conditions.
The full manufacturer product data sheet (Version 03.01, July 2024) is embedded on this page, and the current version is always available from Sika at usa.sika.com. Verify against the latest version before specification.
Craftsman Concrete Floors installs Sika Ucrete UD 200 systems nationwide as a Sika Installer, using in-house W-2 crews. Application must be performed by a fully trained Sika Ucrete applicator to preserve the manufacturer warranty.
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