This Douglas Oxide Green 5L paint is suitable for use on galvanize surfaces. For best results, thoroughly clean and prime unstable surfaces such as flaky galvanize before application. We recommend applying our anti-corrosive light grey primer as a first coat. All other surfaces should be clean before application. Approximately 1 litre of paint is needed for every 5 square meters of galvanize sheeting. A second coat is recommended, using less paint than the first coat. White spirits is the best thinning agent for this product if you are applying with a sprayer. If using a brush or roller, we recommend not thinning out the paint.