Fourteen years ago had a boundary rendered block wall built and installed powder coated aluminium slat panels (Colourbond
Jasper). With the passage of time, most of the gloss (semi-gloss?) has now gone and the paint faded, especially in sections getting the full force of the westerly sun. The paint is not peeling or flaking and in otherwise good condition. How do I go about spraying these? Suggestions for paint. Do I really need a primer?
