This is the existing CFC deck that needs to be repainted. Still in good condition but have some stain marks. Any thoughts?
Welcome to the Bunnings Workshop community @xiexieni. It's wonderful to have you join us and many thanks for your question on painting.
If you were to use a product such as Dulux Concrete and Paving paint, you should follow the directions below:
Previously painted concrete surfaces & non-porous surfaces
Pressure wash the surface (use a 1200psi or higher-pressure machine) to remove dirt dust, algae, mould and other contaminants as well as possible.
Apply Dulux Concrete & Paving Sealed Surface Cleaner using a plastic watering can evenly apply, before scrubbing into the surface.
Allow Dulux Concrete & Paving Sealed Surface Cleaner to remain on the surface for 10-15 minutes even though most reaction (seen as bubbling/fizzyreaction) will likely subside after a couple of minutes. Ensure that the surface does not dry out. Some reaction products from the acid may form insoluble residue. If this occurs and the surface dries these residues will be very hard to remove. Power wash the surface to remove all residues released.
Allow the cleaned surface to dry. Apply 1 coat of Dulux Concrete & Paving Sealed Surface Primer and allow the primed surface to dry prior to water-based topcoat application.
Here's a helpful guide: How to paint concrete surfaces.
Please let me know if you have any questions.
Mitchell
