Service · the UK
Cut Edge Corrosion Treatment
Treat and seal corroding sheet ends and laps before rust spreads, a targeted, cost-effective way to extend the life of a metal roof.
Independently assessed & accredited
On profiled metal roofs, corrosion almost always starts at the cut edges, the exposed sheet ends at the eaves and the overlaps between sheets, where the protective coating was cut during manufacture or installation. Left untreated, that rust creeps up the sheet until it perforates and the roof starts to leak.
Cut edge corrosion treatment stops that process early, at a fraction of the cost of replacing sheets.
What the treatment involves
We clean back the corroding edges to remove loose rust and debris, then apply a specialist coating system that seals the exposed metal and laps against further weathering. The result is a sealed, protected edge that arrests the corrosion and extends the serviceable life of the roof.
It is a targeted treatment, we apply it where it is needed rather than coating the whole roof, which keeps the cost proportionate to the problem.
Catching it early pays off
The economics of cut edge corrosion are simple: treating it early is cheap; replacing perforated sheets is not. A roof inspection picks up corrosion while it is still surface rust on the laps, before it has eaten through the sheet and started letting water in.
If your metal roof is more than a decade or two old and has never been treated, it is worth a look.
Why cut edges corrode first
When profiled sheets are cut to length and overlapped, the protective coating and galvanising are broken at the cut line, leaving bare steel exposed at the sheet ends and laps. Rainwater sits in these overlaps for longer than it does on the open face of the sheet, so corrosion takes hold here first and then spreads back under the coating. This is why a roof can look sound across its main area while the eaves and laps are quietly rusting through, and why treating the edges tackles the problem exactly where it starts.
Part of a wider refurbishment
Cut edge treatment is often carried out alongside other roof refurbishment work, gutter repairs, rooflight replacement and lap sealing, as part of a single planned visit, which keeps access costs down.
Get a fixed quote
Tell us about your roof and we will inspect the sheet ends and laps, identify where treatment is needed, and provide a fixed-price scope.
