23/10/2026
Why is rust preparation important before painting metal?
➡Rust should never be painted over without proper preparation.
If left untreated, it can continue to affect the metal underneath the coating, leading to poor adhesion, staining, blistering or premature coating failure🚫.
⏺️Before painting, rusted areas should be sanded and prepared, with loose rust and unstable material removed.
⏺️The area should then be primed with the correct primer, before continuing with the recommended topcoat system.
Severely rusted sheets should be replaced rather than painted over.