March occupies an unusual place in the British calendar, where homeowners are forced to make crucial decisions regarding the maintenance of metal railings. It is a time when temperatures are rising but are still unpredictable. While rainfall is still possible, but there are also extended periods of dry weather. At first glance, the metalwork appears in good condition, but closer inspection reveals the effects of winter. When is the best time to apply rust prevention treatments, and should you wait until spring?