Can you recommend a suitable primer for a 4m x 3m rusty corrugated iron roof. The rust is mostly surface and affects 75% of the roof.
Assuming the corrugated roof has all the rust removed, it is clean, dry, sound and prepared as detailed in the technical data sheet we can recommend 2 coats at 200grams per m² of Rust-Oleum Mathys Noxyde Peganox.
This can be applied by brush or roller in a range of colours.