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Sikagard-850 Clear, Anti-Graffiti & Anti-Poster Clear Coating, Exterior, Clear

Sikagard-850 Clear, Anti-Graffiti & Anti-Poster Clear Coating, Exterior, Clear

Surface Treatments
SIKA

Sika is a global leader in specialty chemicals for the construction and industrial sectors. The company develops and supplies innovative products and systems for bonding, sealing, damping, reinforcing, and protecting structures. With a strong focus on sustainability and performance, Sika serves a wide range of applications including concrete production, waterproofing, roofing, flooring, and structural strengthening.

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General Specifications
Packaging 5 kg
Usage Permanent anti-graffiti/fly-poster coating for masonry, wood, render
Chemical Base Polyorganosiloxanes polymer and solvent
Usage Area Exterior
Color Clear
Storage Conditions The product must be stored in original, unopened and undamaged packaging in dry conditions at temperatures between +5 °C and +35 °C. Always refer to packaging
Density 0.92 g / cm³
Consumption 125 to 250 g / m²

Permanent Clear Anti-graffiti and Anti-fly Poster Coating

Sikagard-850 Clear is a one-part ready to use, polyorganosiloxane based, permanent anti-graffiti and anti-fly poster semi-matt coating. This product is part of the Sikagard Anti-graffiti System.

  • Ready to use - no dilution with solvent necessary at the job site.
  • Permanent - graffiti can be typically removed more than 50 times without damaging the protection, or requiring a refresher coat, when using non-aggressive cleaning techniques.
Usage
As a permanent anti-graffiti and anti-fly poster coating on the following substrates:         
  • Fair faced concrete, masonry, cementitious render.
  • Coated concrete, masonry, cementitious render.
  • Coated concrete, masonry, cementitious render previously treated with a hydrophobic impregnation.
  • Coated or uncoated wood.
        Suitable for:          
  • Moisture control (Principle 2, method 2.3 of EN 1504-9).
  • Increasing the resistivity (Principle 8, method 8.3 of EN 1504-9).
Advantages
  • Ready to use - no dilution with solvent necessary at the job site.
  • Permanent - graffiti can be typically removed more than 50 times without damaging the protection, or requiring a refresher coat, when using non-aggressive cleaning techniques.
 
  • Poster prevention – fly poster does not bond onto protected substrate or can be easily removed, even after many cleaning cycles.
  • Semi-matt aspect. Clear aspect when using the fair-faced concrete build-up.
  • No chemical agents required for cleaning.
  • Cleaning requires only cold-water pressure (80 to 100 bar) or cold-water low pressure washing and rubbing down with a clean cloth or scrubbing brush.
  • Water vapour permeable.
  • Complies with the requirements of EN 1504-2 as protective coating.
  • Low water absorption.
  • Very good resistance against weathering and ageing.
  • Good resistance to UV exposure.
  • Applied by brush, roller or airless spray.
  • Very low dirt pick-up.
Packaging

5 and 20 kg containers (refer to current price list for packaging variations). 
Colour

Final applied finish: Semi-matt / clear.

NOTE: 'Fair Face System' will result in a clear aspect, similar in appearance to the untreated substrate.
Technical Information
Freeze Thaw De-Icing Salt Resistance

>1.8 MPa

EN 13687-2

No bubbles, cracks or surface defects after weathering.

Tests were performed after 100 cycles instead of 50 cycles as required by EN 1504-2. 

Permeability to Water Vapour

SD = 0.28 m

EN ISO 7783-1/2

Conforms to Class I (<5 m)

Capillary Absorption

0.0026 kg/m2*h0.5

EN 1062-3

NOTE: "a" of Table 5 of EN 1504-2: "When the capillary absorption to water is <0.01 kg/m2*h0.5 the diffusion of chloride ions is not to be expected".
Application Information
Layer Thickness

~140 to 270 μm (wet film thickness)
Ambient Air Temperature

+8 °C minimum / +35 °C maximum
Relative Air Humidity

≤ 80 %
Dew Point

Substrate and ambient temperature must be at least +3 °C above dew point.
Applied Product Ready for Use

Final Drying

Up to ~24 hours at +20°C for thick film build-up

Full Cure

~7 days

Times are approximate and will be affected by film thickness and changing ambient conditions particularly temperature and relative humidity.

Anti-graffiti and anti-poster protection is achieved as soon as the coating has dried out (~24 hours).