Sikagard® WallCoat WS-11 ESD
Water-based Epoxy and Polyurethane Combination ESD Wall Coating System
Sikagard® WallCoat WS-11 ESD is a water-based, epoxy and polyurethane combination, Electrostatic Discharge (ESD) Wall Coating System. The System is designed to dissipate electrostatic charges (ESD) and protect personnel and sensitive equipment in electrostatic protected areas (EPA).
- Thickness ~0,3–0,5 mm
- Low VOC emissions top coat
- Easy to apply
- Easy to refurbish, top coat can be recoated
- Easy to clean
- Conforms to the requirements of ANSI/ESD S20.20 and IEC 61340-5-1
- Smooth matt surface finish
System Structure
Usage
Resin wall coating on cementitious substrates for:- Electrostatic protected areas (EPA)
- Areas requiring the lowest electrostatic charge (low BVG (Body Voltage Generation)) and dissipative surface
- Electronic production areas
- Automotive production plants
- Chemical production plants
- Laboratories
- Fireworks factories
- Pharmaceutical production areas
- Explosive storage and handling areas
- Explosive dust environments
- Microbiology/microchemistry production areas
- Telephone exchanges
- Workshops
- Computer / server rooms
- Interior use only
Advantages
- Thickness ~0,3–0,5 mm
- Low VOC emissions top coat
- Easy to apply
- Easy to refurbish, top coat can be recoated
- Easy to clean
- Conforms to the requirements of ANSI/ESD S20.20 and IEC 61340-5-1
- Smooth matt surface finish
Colour
Available in a limited number of colour shades such as: RAL 1001, RAL 3012, RAL 5015, RAL 6021, RAL 7011, RAL 7032, RAL 7035, RAL 7037, RAL 7038 and RAL 9018.
Be aware that the colour of the layer below has to be approximately adjusted to the colour of the final layer.
Appearance
Smooth matt finish
System Details
ENVIRONMENTAL INFORMATION
- Conformity with LEED v2009 IEQc 4.2: Low-Emitting Materials - Paints and Coatings - Sikafloor®-305 W ESD.
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.
System Structure
Sikagard® WallCoat WS-11 ESD ~0,3–0,5 mm:
| Layer | Product |
| 1. Primer | 1 × Sikagard® Wallcoat N |
| 2. Intermediate Layer & Earthing Connection | 1 × Sikagard® Wallcoat N + Sika® Earthing Kit |
| 3. ESD Wall Coating | 2 × Sikafloor®-305 W ESD |
The System structure layers as described in table must not be changed.
Composition
| Primer & Intermediate Layer: | Water-based epoxy |
| ESD Wall Coat | Water-based polyurethane |
Nominal thickness
~0,3–0,5 mm
Electrostatic Behaviour
| Typical Average Resistance to Ground | Rg < ~ 105–107Ω |
Readings may vary depending on ambient conditions (i.e. temperature, humidity, etc.) and measurement equipment.
Application
Product Temperature
+10 °C minimum / +30 °C maximum
Ambient Air Temperature
+10 °C minimum / +30 °C maximum
Relative Air Humidity
During curing, the humidity must not exceed 75 %. There must be a sufficient supply of fresh air or a dehumidifier to remove excess moisture from cured water based products.
Dew Point
Beware of condensation. The substrate and uncured applied floor materials must be at least +3 °C above dew point to reduce the risk of condensation or blooming on the surface of the applied product.
Substrate Temperature
+10 °C minimum / +30 °C maximum
Substrate Moisture Content
≤ 4 % percentage by weight. The following test methods can be used: Sika®-Tramex Meter, CM-measurement or Oven-dry-method. No rising moisture according to ASTM (Polyethylene-sheet).
Waiting Time / Overcoating
Before applying Sikagard® Wallcoat N on Sikagard® Wallcoat N diluted with 5% water allow:
| Substrate Temperature | Minimum | Maximum* |
| +10 °C | 3 hours | 7 days |
| +20 °C | 3 hours | 7 days |
| +30 °C | 2 hours | 7 days |
Before applying Sikafloor®-305 W ESD on Sikagard® Wallcoat N allow:
| Substrate Temperature | Minimum | Maximum* |
| +10 °C | 3 hours | 7 days |
| +20 °C | 3 hours | 7 days |
| +30 °C | 2 hours | 7 days |
Before applying Sikafloor®-305 W ESD on Sikafloor®-305 W ESD allow:
| Substrate Temperature | Minimum | Maximum* |
| +10 °C | 48 hours | 10 days |
| +20 °C | 24 hours | 8 days |
| +30 °C | 16 hours | 7 days |
* If the maximum waiting time is exceeded, the coating must to be lightly abraded e.g. with a 3M™ Brown Stripper disc, belt or pad.
Times are approximate and will be affected by changing ambient conditions particularly temperature and relative humidity.
Applied Product Ready for Use
| Temperature | Light exposure | Full cure |
| +10 °C | ~5 days | ~10 days |
| +20 °C | ~3 days | ~8 days |
| +30 °C | ~2 days | ~7 days |
Times are approximate and will be affected by changing ambient conditions particularly temperature and relative humidity.
Consumption
| Layer | Product | Consumption |
| 1. Primer | Sikagard® Wallcoat N + 5% water by weight | 1 × ~0,15–0,20 kg/m² |
| 2. Intermediate Layer | Sikagard® Wallcoat N | 1 × ~0,15–0,25 kg/m² |
| 3. Earthing Connection | Sika® Earthing Kit | 1 earthing point per ~200–300 m². Minimum 2 per room |
| 3. ESD Wall Coat | Sikafloor®-305 W ESD + 10% water by weight | 2 × ~0,15 kg/m² per coat |
These figures are theoretical and do not allow for any additional material due to surface porosity, surface profile, variations in level, wastage, etc.