Sikafloor® PurCem® HS-25 ECF
Sikafloor® PurCem® HS-25 ECF is a polyurethane hybrid, heavy duty conductive flooring system. The flooring system in association with employee's anti-static clothing and footwear is designed to reduce the risk of an electrostatic discharge igniting an explosive atmosphere.
- Thickness ~6.0 mm
- Good conductivity. Fulfils the conductivity requirements from ATEX 137
- Good chemical, abrasion, impact and thermal resistance
- Tolerant to substrates with high moisture content
- Smooth-textured, slightly undulating surface, matt finish.
- Seamless
- Easy to apply
- Easy cleanability
- Low maintenance
Usage
- Chemical, 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 environments
- Workshops and laboratories
- For Interior use only
Advantages
- Thickness ~6.0 mm
- Good conductivity. Fulfils the conductivity requirements from ATEX 137
- Good chemical, abrasion, impact and thermal resistance
- Tolerant to substrates with high moisture content
- Smooth-textured, slightly undulating surface, matt finish.
- Seamless
- Easy to apply
- Easy cleanability
- Low maintenance
Packaging
Refer to individual Product Data Sheet.
Colour
Beige, Golden Yellow, Carmine Red, Ultramarine Blue, Yellow Green, Pebble Grey, Dusty Grey, Agate Grey
Appearance
Smooth-textured, slightly undulating surface, matt finish.
System Details
APPROVALS / STANDARDS
- CE Marking and Declaration of Performance to EN 1504-2 - Surface protection product for concrete - Coating
- CE Marking and Declaration of Performance to EN 13813 - Resin screed material for internal use in buildings
- Electrical Resistance, Sikafloor® PurCem® HS-25 ECF, LCIE, Report, No. 144937-693914-A
- Fire Testing, EN 13501-1, Sikafloor®-25 PurCem® ECF, Exova, Approval, No. 318327
- Sanitary Compliance EN 1186, EN 13130, CEN/TS 144234, Sikafloor®-25 PurCem®, ISEGA, Certificate No.49109 U
System Structure
Sikafloor® PurCem® HS-25 ECF:
| 1. Earthing + Conductive scratch coat | Sika® Earthing Kit + Sikafloor®-25 S PurCem® ECF |
| 2. Conductive wearing finish | Sikafloor®-25 PurCem® ECF |
Optional primers: Sikafloor®-150/-151 + quartz sand 0.3–0.8 mm broadcast to excess. Refer to the individual Product Data Sheets.
The system structure layers as described in table must not be changed.
Composition
Water-based polyurethane cement hybrid
Nominal Thickness
~6 mm
Shelf Life
Refer to individual Product Data Sheet.
Storage Conditions
Refer to individual Product Data Sheet.
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.
Thermal 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 |
| Typical average resistance to ground2 | Rg < 106– 108 Ω |
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.
All measurement values for the Sikafloor® PurCem® HS-25 ECF system stated in the system data sheet (apart from the ones referring to proof statements) were measured under the following conditions:
Ambient conditions: +23 °C/50 %
Measurement device for the Resistance to Ground: Metriso 2000 (Warmbier) or comparable
Surface resistance probe: Tripod electrode acc. DIN EN 1081
Application
Product Temperature
+15 °C min. / +25 °C max.
Ambient Air Temperature
+15 °C min. / +25 °C max.
Relative Air Humidity
80 % max
Dew Point
Beware of condensation.
The substrate and uncured applied floor material must be at least +3 °C above dew point to reduce the risk of condensation or blooming on the floor finish.
Substrate Temperature
+15 °C min. / +25 °C max.
Substrate Moisture Content
Can be installed on substrates with high moisture contents (≤6 % measured by Sika®-Tramex meter). The substrate must be visibly dry with no standing water and have a tensile strength of ≥1,5 N/mm2. Do not apply if rising moisture is occurring. If an epoxy resin primer is used, refer to the individual Product Data Sheet for the substrate moisture content limits.
Waiting Time / Overcoating
(Optional) Before applying Sikafloor®-25S PurCem® ECF on broadcast Sikafloor®-150/151 allow:
| Substrate temperature | Minimum | Maximum |
| +15 °C | 24 hours | 4 days |
| +20 °C | 12 hours | 2 days |
| +30 °C | 8 hours | 1 days |
Always ensure 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 |
Times are approximate and will be affected by changing ambient and substrate conditions, particularly temperature and relative humidity.
Additional Information
The number of conductivity measurements is recommended in the table below:
| Applied area | Number of measurements |
| < 10 m² | 6 |
| < 100 m² | 10–20 |
| < 1000 m² | 0 |
| < 5000 m² | 100 |
If values are lower/higher than required, additional measurements must be carried out, ~30 cm around the point where the faulty readings are located. If the re-measured values are in accordance with the requirements, the total area is acceptable.
Installation of earthing points: Refer to Sika® Method Statement: Mixing & Applications of Flooring Systems.
Numbers of earth connections per room: Minimum of 2 earthing points. The optimum number of earth connections depends on the local conditions and must be specified on available drawings or other contract documentation.
Consumption
| Flooring System | Product | Consumption |
| Primer + Sand broadcast (optional) | Sikafloor®-150/-151 + quartz sand 0.3–0.8 mm broadcast to excess | 1–2 × ~0.3–0.5 kg/m² |
| 1. 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 × ~3.0kg/m²) |
| 2. Conductive Wearing Finish | 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
Refer to Information Manual: Sikafloor®-Cleaning Regime