Sikagard 850 Activator is a primer for the Sikagard 850 Anti-Graffiti Coating System on coated mineral substrates or wood.

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• Features & Benefits
• System Information
• Application
  
• Drying Time
• Clean Up
• Health And Safety

Features & Benefits

• Primer for the Sikagard 850 Anti-Graffiti Coating System on coated mineral substrates or wood
• Ready to use - no on-site dilution required
• Adhesion promoting primer
• Specifically used with Sikagard 850 Clear
• Applied by brush, roller or airless spray

System Information

System Structure

Please note: When applied to bare mineral surface, Sikagard 850 Clear may provide a wet look effect. To reduce/eliminate this effect, the following build-up is recommended:

Sikagard 552W Aquaprimer + Sikagard 850 Activator + Sikagard 850 Clear

Application

Suitable substrates are:

• Coated substrates such as coated concrete, masonry, cementitious render or wood

Important notes:

• On substrates with a rough surface profile, it will be difficult to produce an even coating thickness
• This may result in reduced protection and cleanability
• Pre-levelling or smoothing the surface is recommended before coating application
• Existing coatings must be tested to confirm their compatibility with Sikagard 850 Activator and Sikagard 850 Clear top coat

Surface preparation:

• Substrate must be clean, dry, firmly bonded and free of all contaminants such as dirt, oil, grease and loose friable material which can reduce the adhesion of the coating
• Very smooth substrates may be slightly roughened by light grinding
• Prepare the substrate using light mechanical preparation equipment, steam cleaning or low water pressure

Application:

• Strictly follow installation procedures as defined in method statements, application manuals and working instructions which must always be adjusted to the actual site conditions
• Important: On rough substrates, use a brush to apply primer and make sure the primer covers all the surface including voids
• Note: To prevent air bubbles affecting the finish, do not 'over' brush, roller or spray
• Apply Sikagard 850 Activator evenly over the prepared coating with a brush, fleece roller or airless spray equipment at the required consumption rate

Coverage

• Approximately 50 to 100g/m²

Drying Time

• Note: A drying time of 1 to 2 hours at ambient temperature and 40% relative humidity is required to allow the formation of a consistent primer film
• Note: A higher relative humidity will extend the drying time
• Note: Do not to exceed 5 hours after priming the surface before applying Sikagard 850 Clear

Clean Up

• Clean all tools and application equipment with white spirit immediately after use.
• Hardened material can only be mechanically removed

Health And Safety

For information and advice on the safe handling, storage and disposal of chemical products, users shall refer to the most recent Safety Data Sheet (SDS) containing physical, ecological, toxicological and other safety-related data.