Sikafloor® PurCem® HS-25 ECF
The Sikafloor® PurCem® HS-25 ECF system is an electrostatically conductive screed made with polyurethane cement technology and is part of the Sikafloor® PurCem® flooring range. The Sikafloor® PurCem® HS-25 ECF system is especially designed to withstand chemical attack, high impact load and can be used in wet and dry processing plants. The Sikafloor® PurCem® HS-25 ECF system is composed of a highly durable polyurethane cement body coat, easy to clean and smooth surface, providing a smooth-textured surface.
- Good conductivity. Fulfils the conductivity requirements from ATEX 137
- Good chemical resistance, resists a wide range of organic and inorganic acids, alkalis, amines, salts and solvents
- Good resistance to fire
- Very low VOC emissions
- Odourless
- High mechanical and abrasion resistance
- Seamless, non-taint, odourless
- Tolerant to substrate moisture
- Smooth, matt surface
- Very good life cycle cost performance
Usage
It is used in areas of medium to high mechanical loading and abrasion, where high chemical exposure and conductive requirements demand a smooth-textured, flat wearing course such as in:- Chemical and explosive storage and handling areas
- chemical and pharmaceutical production plants
- Food processing plants
- In dry or wet process areas
- Freezers and coolers
- Thermal shock areas explosive dust environment
- Workshops and laboratories.
Advantages
- Good conductivity. Fulfils the conductivity requirements from ATEX 137
- Good chemical resistance, resists a wide range of organic and inorganic acids, alkalis, amines, salts and solvents
- Good resistance to fire
- Very low VOC emissions
- Odourless
- High mechanical and abrasion resistance
- Seamless, non-taint, odourless
- Tolerant to substrate moisture
- Smooth, matt surface
- Very good life cycle cost performance
Packaging
Please refer to individual Product Data Sheet.
Colour
Beige, Oxide Red, Sky Blue, Grass Green, Pebble Grey, Light Grey, Dusty Grey, Agate Grey
Appearance
Smooth-textured surface, matt finish
System Details
APPROVALS / STANDARDS
- Conforms to the requirements of EN 13813: 2002 as CT - C50 - F15 - ARO.5 - IR 20
- Conforms to the requirements of EN 1504-2 for principles 5 (PR) and 6 (CR) as a coating (C)
- Impact resistance values tested at PRA Coatings Technology Center, Hampton Moddlesex, UK. Test report No. 75221-151b, dated April, 2012
- Slip resistance properties according to DIN EN 51130 tested at Test Institute MPI, Test report No. 12 6637 - S / 12, August 2012
- Classification of reaction to fire performance acc. EN 13501-1, tested at EXOVA Warringtonfire, Warringtion, UK. Test Report No. 318327, dated May 24th, 2012
- Conforms to the requirements of: EN1186, EN 13130, prCEN/TS 14234 and the Decree on Consumer Goods, representing the conversion of directives 89/109/EEC, 90/128/EEC and 2002/72/EC for contact with food stuffs. Test report by ISEGA, 37970 U 141, June 2014
Shelf Life
Please refer to individual Product Data Sheet.
Storage Conditions
Please refer to individual Product Data Sheet.
System Structure
Sikafloor® PurCem® HS-25 ECF:
| 1. Earthing + Conductive scratch coat | Sika® Earthing Kit + Sikafloor®-25S PurCem® ECF |
| 2. Conductive screed | Sikafloor®-25 PurCem® ECF |
As optional primers Sikafloor®-161 HC + Quartzsand 0.3–0.9 mm broadcast to excess can be used. Please refer to the individual Product Data Sheet.
The system configurations as described must be fully complied with and may not be changed.
Composition
Water-based polyurethane cement hybrid
Nominal Thickness
~ 6 mm
Abrasion Resistance
<900 mg | (H-22/1000/1000) |
Resistance to Impact
| Class III | (≥ 20Nm) |
Compressive Strength
> 50 N/mm² | (DIN EN 13892-2) |
Tensile Strength
> 15 N/mm² | (DIN EN13892-2) |
Tensile Adhesion Strength
>1.5 N/mm² (failure in concrete) | (ISO 4624) |
Reaction to Fire
Bfl-s1 | (EN 13501-1) |
Chemical Resistance
Resistant to many chemicals. Contact Sika technical service for specific information.
Temperature Resistance
The product (6 mm thickness) is suitable for use when exposed to continuous temperatures, wet or dry, of up to +90°C. The minimum service temperature is -40 °C.
Skid / Slip Resistance
R 10 | (DIN 51130) |
Electrostatic Behaviour
| Resistance to ground1 | Rg < 109 Ω | (IEC 61340-4-1) |
| Typical average resistance to ground2 | Rg < 106 Ω–108 Ω | (DIN EN 1081) |
1 In accordance with IEC 61340-5-1 and ANSI/ESD S20.20.
2 Readings may vary, depending on ambient conditions (i.e. temperature, humidity) and measurement equipment.
Application
Product Temperature
+15 °C min. / +25 °C max.
Ambient Air Temperature
+15 °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
+15 °C min. / +30 °C max.
Substrate Moisture Content
The Sikafloor® PurCem® HS-25 ECF System can be installed on substrates with higher moisture content (6% checked by Tramex). The substrate needs to be visibly dry and have an adequate pull-off strength min 1.5 N/mm2. No ponding water. Check for rising moisture. If an epoxy resin as primer is used please refer to the individual Product Data Sheet for the limits with regards to substrate moisture content.
Waiting Time / Overcoating
(Optional) Before applying Sikafloor®-25S PurCem® ECF on broadcast Sikafloor®-161 HC allow:
| Substrate temperature | Minimum | Maximum |
| +15 °C | 24 hours | 4 days |
| +20 °C | 12 hours | 2 days |
| +30 °C | 8 hours | 1 days |
Always make sure primer is fully cured before application.
Before applying Sikafloor®-25 PurCem® ECF on Sikafloor®-25S PurCem® ECF allow:
| Substrate temperature | Minimum | Maximum |
| +15 °C | 36 hours | 72 hours |
| +20 °C | 24 hours | 48 hours |
| +30 °C | 12 hours | 24 hours |
Times are approximate and will be affected be changing ambient and substrate conditions, particularly temperature and relative humidity.
Applied Product Ready for Use
| Temperature | Foot traffic | Light traffic | Full cure |
| +10 °C | ~ 20 hours | ~ 34 hours | ~ 7 days |
| +20 °C | ~ 12 hours | ~ 16 hours | ~ 4 days |
| +30 °C | ~ 8 hours | ~ 14 hours | ~ 3–4 days |
Note: Times are approximate and will be affected by changing ambient conditions
Consumption
| Coating | Product | Consumption |
| Primer (optional) | Sikafloor®-161 HC + quartz sand 0.3–0.9 mm broadcast to excess | 1–2 × ~0.3–0.5 kg/m² |
| Earthing connection | Sika® Earthing Kit | 1 earthing point per approx. 200–300 m², min. 2 per room. |
| Conductive scratch coat | Sikafloor®-25S PurCem® ECF | ~1.81 kg/m²/mm (1 × ~3.0 kg/m²) |
| Conductive screed | Sikafloor®-25 PurCem® ECF | ~1.89 kg/m²/mm (1 × ~9.0 kg/m²) |
These figures are theoretical and do not allow for any additional material due to surface porosity, surface profile, variations in level or wastage etc.
CLEANING
Please refer to the Sikafloor® Cleaning Regime.