Sikafloor® MultiFlex PB-21
Sikafloor® MultiFlex PB-21 is a multipurpose, tough-elastic and slip resistant polyurethane flooring system and is part of the Sikafloor® Multiflex flooring range.
Sikafloor® MultiFlex PB-21 is especially designed for use in different indoor industrial applications where rough, seamless hardwearing floors are required.
Sikafloor® MultiFlex PB-21 consists of a tough-elastic, crack bridging polyurethane base coat which is covered with an elastic top coat layer of non-blushing epoxy resin, certified according to EN 1504 and DIN V 18026 as OS 13.
- Good mechanical resistance
- Good crack bridging ability
- Good chemical resistance
- Scratch resistant surface
- Low dirt pick up
- Easy to clean and maintain
- Seamless
- Anti-slip surface
- Low VOC content
- Watertight and easy to apply
System Structure
Usage
- For car park decks, garage floors and bridges
- Life Science industry
- Automotive industry
- Industrial flooring for Storage, Logistic and Sales areas
- Retail (e.g. Shopping Centres)
Advantages
- Good mechanical resistance
- Good crack bridging ability
- Good chemical resistance
- Scratch resistant surface
- Low dirt pick up
- Easy to clean and maintain
- Seamless
- Anti-slip surface
- Low VOC content
- Watertight and easy to apply
Packaging
Please refer to the individual Product Data Sheets
Colour
Available in RAL 7023, 7030, 7032, 7035, 7037, 7038, 7040, 7042, 9002, 9010
Other colour shades upon request.
Appearance
Slip resistant, glossy finish
System Details
ENVIRONMENTAL INFORMATION
Conformity with LEED v2009 IEQc 4.2: Low-Emitting Materials - Paints and Coatings
APPROVALS / STANDARDS
- Synthetic resin screed material according to EN 13813:2002, Declaration of Performance and provided with the CE mark
- Coating for surface protection of concrete according to EN 1504-2:2004, Declaration of Performance and provided with the CE mark
- Certified as part of the Surface Protection System OS 13 according to DIN V 18026 (Rili-DAfStb) test report No. P 9966
- Reaction to Fire Classification according to DIN EN 13501-1 tested at Prüfinstitute Hoch, report number KB-Hoch-161200
System Structure
Sikafloor® MultiFlex PB-21
| Layer | Product |
| 1. Primer | Sikafloor®-150/-151 + Light broadcast of Quartz sand 0.3–0.8 mm |
| 2. Base coat | Sikafloor®-375 + Quartz sand 0.06–0.3 mm addition (filling ratio 1:0.3–0.5) + Aggregate broadcast 0.6–1.2 mm |
| 3. Top coat | Sikafloor®-378 |
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.
As optional primers Sikafloor® -144/-156 can be used. Please refer to the individual Product Data Sheet. As an alternative top coat Sikafloor®-354 diluted with Thinner C can be used. Please refer to the individual Product Data Sheet.
Composition
Polyurethane, Epoxy
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
24 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 | (DIN EN 13501-1) |
Chemical Resistance
Sikafloor® MultiFlex PB-21 always has to be sealed with Sikafloor®-378. Refer to the chemical resistance of Sikafloor®-378.
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 can be installed on substrates with moisture content of max. 4% (checked by Tramex). The substrate needs to be visibly dry and have an adequate pull-off strength min 1.5 N/mm2. Check for rising moisture.
Applied Product Ready for Use
| Temperature | Foot traffic | Light traffic | Full cure |
| +15 °C | ~ 72 hours | ~ 6 days | ~ 10 days |
| +20 °C | ~ 24 hours | ~ 4 days | ~ 7 days |
| +30 °C | ~ 18 hours | ~ 2 days | ~ 5 days |
Note: Times are approximate and will be affected by changing ambient and substrate conditions
Consumption
| Layer | Product | Consumption |
| 1. Primer | Sikafloor®-150/-151 + Light broadcast of Quartz sand 0.3–0.8 mm | ~0.4 kg/m²/layer |
| 2. Base coat | Sikafloor®-375 | ~1.8 kg/m2 |
| + Quartz sand 0.06–0.3 mm addition (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®-378 | ~ 0.8–0.9 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