Rooflock 48 - Cut Edge Corrosion Treatment

What is cut edge corrosion?

Cut Edge Corrosion is the term given to corrosion that develops at the factory guillotined tail ends of profiled steel roof sheets. As the bare steel at the sheet end begins to corrode, the original coating peels off and the corrosion moves progressively up the roof sheet.

Additionally, as the original mid-lap sealants break down, water can be driven in by capillary action and retained between the roof sheets, exacerbating the corrosion from within.

It is estimated that that around 2 in 3 of metal roofs in the UK are affected by cut edge corrosion, and if left unchecked, this issue can progress to become a serious problem affecting both the weatherproofing and structural integrity of the roof. The roof can deteriorate to the extent that replacement is the only option.

However, by addressing cut edge corrosion early with application of a dedicated metal protection product such as Rooflock 48 Coating System, potentially costly and disruptive remedial action can be avoided.

Rooflock 48 Coating – reducing embodied carbon write-off

CAt 9.85t CO2e, steel has one of the highest values of embodied carbon in construction (even higher than concrete). When a steel roof is removed and replaced, this embodied carbon is written off and added directly to the organisation’s Scope 3 emissions reports.

By making a timely, sustainable choice and using Rooflock 48 Coating to either treat cut edge corrosion or as coating to the entire metal roof, the environmentally costly option of roof replacement can be avoided, and the roof is protected for the future.