What is Cut Edge Corrosion?

As commercial roofers we’ve seen all manner of problems with commercial and industrial roofs and one of the worst issues that faces roofs is without a doubt cut edge corrosion.

The problem is that not many building owners are aware that their roof has cut edge corrosion so it is often left untreated. The issue is pretty widespread with around two thirds of buildings thought to have the problem.

But What is Cut Edge Corrosion and How Can it Affect Your Building?

Cut edge corrosion affects buildings that use corrugated steel or aluminium sheet cladding as a protective layer on their roofs. The area where the sheet overlaps is susceptible to regular weathering but over time, the exposed cut edges become vulnerable to oxidation. This is because the edges do not have the same covering or protection that the rest of the cladding does – which is usually covered with a protective plastic coating.

This oxidation and exposure to other pollutants slowly eats away at the edges and causes increasing corrosion. If left untreated, cut edge corrosion can cause leaks, compromise the roof integrity and destroy the weather-sealed lap joint.

Cut edge corrosion can be fixed relatively easily if you catch it early. Usually, a low modulus silicone system can be used to rectify the problem, which will prolong the lifespan of the roof sheeting for over 15 years.

However, cut edge corrosion is not always detected until the problem has become much more serious. In sever cases, a low modulus silicone system isn’t sufficient and a full roof repair or even replacement may be necessary.

How to Spot the Signs of Cut Edge Corrosion

We’ve established that catching cut edge corrosion sooner rather than later is imperative and to do this, regular roof maintenance should be carried out by reputable commercial roofers. Not only can roof maintenance help you get ahead of cut edge corrosion, it can make you aware of any other problems you might have, prolong the life expectancy of your roof and minimise the risk of water ingress.

Little or no roof maintenance can lead to all kinds of health and safety issues and spiralling repair costs. It is actually proven that our clients have saved money in the long-run by investing in regular roof maintenance.

Look out for flaking metal, rust and warped metal edges as these can all be signs of cut edge corrosion. You may also see corrosion blisters around the jointing.

If you think your roof may have cut edge corrosion then it’s vital that you contact a team of commercial roofers straight away. Our contact number is: 0800 046 1500