Surfaces previously coated with Dulux Avista 2 Pack Urethane will require abrading & solvent wiping before being overcoated. Abrade with 100-120 grit sandpaper & sanding pole, to create a physical key. Solvent wipe to remove any dust. Surfaces that have an unknown coating, such as paints, curing agents or acrylic sealers must removed by stripping or grinding. 

Ensure concrete is sufficiently cured (recommended minimum 14 days). Concrete is to be clean and free of grease, oil, paint or any curing agent. Cleaning with a stiff broom and general purpose cleaner recommended. Any oil stains should be treated & cleaned with an industrial degreaser. Pressure clean surface at minimum 2000 psi and allow to dry. Acid etch with hydrochloric acid. Dilute approximately 20 parts water to 1 part acid (depending on porosity) to remove any loosely bound cement and laitance. Note: smooth concrete will require a higher acid content. Maximum strength - 10 parts water to 1 part acid. Apply diluted acid to surface using a large head watering can, applying in a criss cross motion (approximately 5-10m² sections). Acid will start to fizz on the surface once it starts to react with the laitance in the concrete. Pressure clean immediately to clean and remove all remnants of acid (do not allow acid to dry on surface). Pressure clean at minimum 2000 psi. Allow surface to fully dry before sealing (sealing over damp concrete will cause whitening or cause sealer to lift). 

For roller application, a good quality 6mm-22mm nap, solvent resistant synthetic roller should be used. Nap length will vary depending on the substrate. For smooth surfaces, use a 6mm-10mm roller. For use over flake flooring, resurfacing or course concrete, a longer nap is recommended. For airless spray application, 20% Dulux Avista Solvent should be added. 

Refer to Local Council or State/ Territory Land Waste Management Authority for disposal.

Do not re-use container.