Watco Tack Coat

Watco Tack Coat is a high strength 100% solids epoxy resin adhesive primer for use prior to screeding with Watco Concrex or Watco Concrex Vertical. It creates a strong bond for the concrex range on shallow or intricate repairs.

Best Uses

Watco Tack Coat should be used prior to screeding with Watco Concrex. It is suitable for both internal and external applications and can be applied over existing paint, however, all poorly bonded paint must be removed and well bonded paint roughened to provide a key.

Application

Concrete: Always ensure the surface is clean and free of all loose material. Watco Tack Coat may be applied over existing paint but all poorly bonded paint must be removed and well bonded paint roughened to provide a key. Check that there is no ice in the substrate.

Metal: Remove any loose or flaking material and rust by wire brushing or disc grinding. Oil or grease should be removed with Watco Bio-D Degreaser and the metal allowed to dry. Watco Tack Coat should be applied immediately after cleaning and drying.

Mixing

Pour the contents of the smaller tin into the larger tin and mix thoroughly with a wide bladed tool. When using the 6m² pack decant into a shallow tray. Do not leave mixed components in the tin - the product will quickly become unusable and the tin become hot. Use immediately, the pot life of the mixed components is 20 minutes maximum at 20ºC, less at higher temperatures.

Application

Apply sparingly by roller or brush and allow to become tacky. Overlaying must be completed while the Watco Tack Coat is still tacky and before it cures. It should be sufficiently tacky to overlay after approximately 60 minutes at 15ºC - 20ºC, but this will be extended to 3 hours at 5ºC. If it is allowed to harden a fresh pack must be brushed over the surface, if possible within 24 hours.