Sika® Ucrete® MF
(former Ucrete® MF)
Smooth, heavy-duty, polyurethane floor screed
Sika® Ucrete® MF is a smooth, polyurethane, heavy-duty floor screed. It has very good resistance to aggressive chemicals, heavy abrasion and thermal shock.
- Resistant to bacterial or mould growth
- Suitable for application on to 7-day-old concrete and 3-day-old polymer screed
- Very good resistance to a wide range of chemicals
- Very good mechanical resistance
- Impermeable to liquids
- Non-tainting from the end of mixing
- Low VOC emissions
- Thermal expansion properties similar to concrete
Usage
Sika® Ucrete® MF is used within dry process areas including the following application areas:- Chemical and processing facilities
- Clean rooms
- Dry packing lines
- Storage areas
- Warehouses
- The Product may only be used by experienced professionals.
Advantages
- Resistant to bacterial or mould growth
- Suitable for application on to 7-day-old concrete and 3-day-old polymer screed
- Very good resistance to a wide range of chemicals
- Very good mechanical resistance
- Impermeable to liquids
- Non-tainting from the end of mixing
- Low VOC emissions
- Thermal expansion properties similar to concrete
Packaging
Refer to the current price list for available packaging variations.
Colour
| Cured colour | Red, Orange, Yellow, Cream, Grey, Light Grey, Green, Green-Brown, Blue. |
Product Details
CERTIFICATES AND TEST REPORTS
Food and Beverage Facilities Suitability, Sika® Ucrete®, HACCP, Test Report No. I-PE-769-SA-2-RG-06b
Halal Certification Europe (HCE), Sika® Ucrete®, WHFC, Certificate No. 21453-2/1/1/Y1
Indoor Air Comfort Gold EN 16516, Sika® Ucrete®, eurofins, Certificate No. IACG-321-01-01-2023
Composition
Water-based polyurethane cement hybrid
Shelf life
Always refer to the best-before date of the individual packaging.
Storage conditions
The Product must be stored in original, unopened and undamaged sealed packaging in dry conditions at temperatures between +5 °C and +30 °C. Always refer to the packaging.
Refer to the current Safety Data Sheet for information on safe handling and storage.
Density
| Mixed Product | ~1.90 kg/l |
System structure
| Layer | Product | |
| 1. | Option 1: Primer slurry | Sika® Ucrete® PFS |
| Option 2: Scratch coat | Sika® Ucrete® MF | |
| 2. | Wearing layer | Sika® Ucrete® MF |
Compressive strength
| Cured 28 days at +23 °C | 48 - 53 N/mm² |
Modulus of elasticity in compression
| 3250 - 4000 MPa | (BS 6319-6) |
Flexural-strength
| Cured 28 days at +23 °C | 18 - 21 N/mm² |
Tensile strength
| Cured for 28 days at +20 °C | ~9 MPa |
Tensile adhesion strength
| Concrete failure | (EN 1542) |
Coefficient of thermal expansion
3.6 × 10-5 °C-1 | (ASTM C531) |
Skid / slip resistance
PTV, slider 96 | 35 wet conditions |
Class | R 10 |
Service temperature
| Maximum | +70 °C |
| Minimum | -15 °C |
(For 6 mm thickness)
Chemical resistance
Laboratory-defined resistance to many individual chemicals. Before proceeding, contact Sika Technical Service for specific information.
Reaction to fire
Class Bfl-s1 | (EN 13501-1) |
Dry film thickness
~4 - 6 mm
Application
Layer thickness
~4–6 mm
Material temperature
| Maximum | +25 °C |
| Minimum | +18 °C |
Ambient air temperature
| Maximum | +25 °C |
| Minimum | +12 °C |
Substrate temperature
| Maximum | +25 °C |
| Minimum | +12 °C |
Curing time
| Substrate temperature | Return to traffic |
| +8 °C | < 24 hours |
| +15 °C | 4 hours (with Sika® Ucrete® Accelerator) |
Note: Times are approximate and will be affected by changing ambient and substrate conditions.
Consumption
| Layer | Product | Consumption |
| Option 1: Primer slurry | Sika® Ucrete® PFS | ~1.6 kg/m2 (~1 mm) |
| Option 2: Scratch coat | Sika® Ucrete® MF | ~2.0 kg/m2 (~1 mm) |
| Wearing layer | Sika® Ucrete® MF | 6 – 8 kg/m2 for 3 mm 10 – 12 kg/m2 for 5 mm |
These figures are theoretical and do not allow for any additional material due to surface porosity, surface profile, variations in level, wastage or any other variations. Apply product to a test area to calculate the exact consumption for the specific substrate conditions and proposed application equipment.
SUBSTRATE PREPARATION
IMPORTANT
Reduced service life due to incorrect treatment of cracks
The incorrect assessment and treatment of cracks may lead to a reduced service life and reflective cracking.
TREATMENT OF JOINTS AND CRACKS
Construction joints and existing static surface cracks in substrate require pre-treating before full layer application. Use Sikadur® or Sikafloor® resins.
The System can be applied on green or damp concrete with no standing water. Allow for at least 3 days for early concrete shrinkage to occur to prevent shrinkage cracks from appearing on the wearing surface.
Cementitious substrates must be structurally sound and of sufficient compressive strength (minimum
30 N/mm2) with a minimum tensile adhesion strength of 1.5 N/mm2.
Substrates must be clean, dry and free of contaminants such as dirt, oil, grease, coatings, laitance, surface treatments and loose friable material.
APPLICATION
Application must be undertaken by a fully trained and licensed Sika® Ucrete® applicator. Refer to Method Statement for further details.
CLEANING OF EQUIPMENT
Clean all tools and application equipment with e.g. Thinner C or other suitable thinner, immediately after use. Hardened / cured material can only be mechanically removed.