Sika Sikagard® 850AG

Non Hazardous
A clear permanent anti-graffiti anti-fly poster coating for concrete, masonry, wood and metal surfaces.
Available in Clear 25 Kg
£996.00 £830.00
In stock
Product Description

Sikagard® 850 AG is a clear permanent anti-graffiti anti-fly poster coating for concrete, masonry, wood and metal surfaces, graffiti can easily be removed without any cleaning solvents

Sikagard 850 AG has been formulated from polyorganosiloxanes polymer and solvents, making for highly weather resistant, UV resistant and vapour permeable anti-graffiti coating. Other great advantages of 850AG are its low dirt pick and water repellence. It can be applied to most concrete masonry, wood and steel surfaces as well as mineral substrates that have been previously treated with a hydrophobic impregnation. 850 AG will provided a clear wet look finish that will enhance colour.

The major benefit of Sikagard® 850 AG has over similar anti-graffiti coatings, is that graffiti and fly poster can be removed without the need for cleaning solvents. To remove graffiti and fly posters simply hose down the surface whilst scrubbing with a stiff brush or clean absorbent cloth. And being a permanent coating there is no need to re-apply 850 AG after cleaning.

Sikagard® 850 AG is ideal for application onto concrete masonry, wood, steel, mineral substrate that have been previously treated with a hydrophobic impregnation, bridges, walls, plus many more

Best uses

Sikagard® 850 AG is ideal for walls, bridges, buildings, street furniture, lamp posts, truck sides, wood, steel, timber, concrete, mineral substrates that have been previously treated with a hydrophobic impregnation, previously coated, masonry plus many more


Sikagard 850AG can be applied by long haired brush, roller or airless sprayer. Before application surface will need to be sound, clean, dry and free from loose and friable particles.
All surfaces a part from timber will first need to be primed. To prime the surface apply a coat of Sikagard 850 AG diluted by 20-30% volume with white spirit.

Following the primer, coat apply an undiluted coat of Sikagard 850 AG. After completion of application allow the coating to cure for up to 7 days.

To remove graffiti and fly posters, simply hose the surface with cold water whilst scrubbing with a stiff brush or absorbent cloth.

Technical Details


  • Permanent – graffiti can be removed various times without damaging the protection layer
  • Poster prevention – fly posters simply cannot stick on treated surface
  • No chemical agent required for cleaning
  • Cleaning requires only cold water pressure (80 to 100 bars). Alternatively, graffiti can be removed using a simple hose and rubbing down with a suitable absorbent clean cloth or stiff brush
  • Water vapour permeable
  • Low water absorption
  • Very good resistance against weathering and ageing
  • High UV resistance and gloss retention
  • Very low dirt pick-up

Technical Info

Components: One Part
Type: Based on Polyorganosiloxanes
Finish: Wet Look
Stock Colours: Clear
Tintable: No
VOC Content: 140.0g per Litre
Volume Solids: 90%
Suitable Substrates: For fair faced concrete, masonry, coated concrete, mineral subsrates previously treated with hydrophobic impregnation
Application Method: Brush, Roller or Airless Spray
Theoretical Coverage: Typically approx 150 to 250 g per m2 for the top coat – generally 1 coat is sufficient on a suitably prepared, uniform and primed substrate
Wet Film Thickness (WFT):
Dry Film Thickness (DFT):
Induction Time: -
Pot Life: -
Touch Dry:
Fully Cured: 7 days at 20°C
Cleaner / Thinner: White Spirit
Shelf Life: 12 months from date of production if stored properly in undamaged and unopened original sealed packaging
Packaging: Available in 25 Kg
Product Video

The manufacturers data sheets are available for download from this website. It is your responsibility to read and understand all aspects of the data sheets before you place an order and prior to application. Please pay special attention to the preparation, mixing and application temperatures of the product, cleaning of substrate and environmental factors such as temperature, rain etc. Quoted coverage rates are based on the manufacturers theoretical rates and may vary depending upon substrates absorption, texture and application. We always recommend a test is carried out to ensure suitability.

Customer further agrees that Promain have no liability for any errors or omissions contained within the Product Data Sheets and are not liable for failure due to misapplication or inadequate substrate cleaning and preparation. For more information please refer to our Terms & Conditions.

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