Visible rust and flaking paint
Surface rust that keeps returning shortly after repainting, or rust visible at joints and welds even after a fresh coat, usually means corrosion has progressed beneath the paint layer, not just on the surface.
Weld and joint condition
Any visible cracking, gaps, or movement at welded joints is a more serious sign than surface rust alone, since this affects the grille's actual structural integrity rather than just its appearance.
Age as a factor
Most iron grilles need repainting every 2-4 years to hold off rust, and even with regular maintenance, welded joints can weaken over a decade or more of weather exposure. A grille older than 15-20 years is worth a professional assessment even without obvious visible damage.
Why acting early matters
Replacing a grille before it becomes a structural concern is simpler and often cheaper than an emergency replacement after a failure, and it's a natural point to upgrade to SS316 and tighter child-safe spacing in the same project.
Need this done at your property?
Free site visit and written quote, usually scheduled within 24 hours.
Frequently asked questions
Is surface rust after repainting a serious concern?+
It can indicate corrosion has progressed beneath the paint layer, worth a professional assessment rather than another repaint cycle.
How old is too old for an iron grille?+
Grilles older than 15-20 years are worth a professional assessment even without obvious visible damage.