Sikafloor® MultiFlex PB-21 UV
Sikafloor® MultiFlex PB-21 UV is a multipurpose, tough-elastic and slip resistant polyurethane flooring system and is part of the Sikafloor® Multiflex flooring range.
Sikafloor® MultiFlex PB-21 UV is especially designed for use in many different industrial applications where seamless, UV and color stable, hardwearing floors are required.
Sikafloor® MultiFlex PB-21 UV consists of a tough-elastic, crack bridging polyurethane base coat over which a UV resistant top coat is applied, in order to provide a well defined surface profile and a non-yellowing final surface.
- Tough-elastic, Watertight
- High mechanical resistance
- Good chemical resistance
- UV and colour stable
- Good opacity, matt finish
- Scratch resistant surface
- Low dirt pick up
- Easy to clean and maintain
- Seamless, Easy application
- Anti-slip surface
System Structure
Usage
- Car park decks, garage floors and bridges
- Exposed surfaces for UV resistance
- Life Science industry
- Automotive industry
- Industrial flooring for Storage, Logistic and Warehouses
Advantages
- Tough-elastic, Watertight
- High mechanical resistance
- Good chemical resistance
- UV and colour stable
- Good opacity, matt finish
- Scratch resistant surface
- Low dirt pick up
- Easy to clean and maintain
- Seamless, Easy application
- Anti-slip surface
Packaging
Please refer to the individual Product Data Sheets
Colour
Almost unlimited choice of colour shades.
Appearance
Slip resistant, matt finish
System Details
System Structure
Sikafloor® MultiFlex PB-21 UV
| Layer | Product |
| 1. Primer | Sikafloor®-150/-151 |
| 2. Base coat | Sikafloor®-375 + Aggregate broadcast 0.6–1.2 mm |
| 3. Top coat | Sikafloor®-359 N |
Alternative broadcast can be done by using quart sand 0.3–0.8 mm at the respective covering rate of the top coat. Please check the individual Product Data Sheet.
Composition
Polyurethane
Nominal Thickness
~2.5–3.5 mm
Shelf Life
Please refer to the individual Product Data Sheets
Storage Conditions
Please refer to the individual Product Data Sheets
Shore D Hardness
| ~60 (14 days / +23 °C) | (DIN 53505) |
Abrasion Resistance
160 mg (CS 10/1000/1000) | (DIN 53109) |
Resistance to Impact
Class I | (ISO 6272) |
Compressive Strength
| ~60 N/mm2 | (EN 196-1) |
Tensile Strength
| ~11 N/mm2 | (DIN 53504) |
Tensile Adhesion Strength
| > 2.0 N/mm2 | (EN 13892-8) |
Reaction to Fire
Bfl-s1 | (EN 13501-1) |
Chemical Resistance
Sikafloor® MultiFlex PB-21 UV always has to be sealed with Sikafloor®-359 N. Refer to the chemical resistance of Sikafloor®-359 N.
Permeability to Water Vapour
Class III | (EN ISO 7783-1) |
Capillary Absorption
| w < 0.1 kg/(m2 × h0.5) | (EN 1062-3) |
Permeability to CO2
| Sd - 2020 m | (EN 1062-6) |
Application
Product Temperature
+10 °C min. / +30 °C max.
Ambient Air Temperature
+10 °C min. / +30 °C max.
Relative Air Humidity
80 % max.
Dew Point
Beware of condensation!
The substrate and uncured floor must be at least 3 °C above dew point to reduce the risk of condensation or other disturbance of the surface on the floor finish
Substrate Temperature
+10 °C min. / +30 °C max.
Substrate Moisture Content
Sikafloor® MultiFlex PB-21 UV can be installed on substrates with moisture content of max. 4 % (checked by Tramex). The substrate needs to be visibly dry and have adequate pull-off strength min 1.5 N/mm2. Check rising moisture.
Applied Product Ready for Use
| Temperature | Foot traffic | Light traffic | Full cure |
| +15 °C | ~48 hours | ~5 days | ~10 days |
| +20 °C | ~24 hours | ~3 days | ~7 days |
| +30 °C | ~16 hours | ~2 days | ~3 days |
Note: Times are approximate and will be affected by changing ambient and substrate conditions
Consumption
| Layer | Product | Consumption |
| 1. Primer | Sikafloor®--150/151 | ~0.4 kg/m²/layer |
| 2. Base coat | Sikafloor®-375 | ~1.8 kg/m2 |
| + Filling quartz sand 0.06-0.3 mm (filling ratio 1:0.3-0.5) | ~0.5-0.9 kg | |
| Aggregate broadcast 0.6–1.2 mm | ~4.0–6.0 kg/m2 | |
| 3. Top coat | Sikafloor®-359 N | ~0.9 kg/m2 |
Consumptions are theoretical and do not include any wastage or additional materials needed due to porosity, substrate profile etc.
CLEANING
Please refer to the Sikafloor®‐ Cleaning Regime