Staples retail outlets around the UK have been having their metal roofs refurbished with Seamsil, one of the UKʼs leading cut edge corrosion treatments. With minimal disruption, Staples busy Norwich store, has become the companyʼs seventeenth property to date, to benefit from the patented, silicone external repair treatment that is guaranteed to extend a roofʼs life for many years to come. Seamsil by Delvemade was developed from the outset with help from Itac, its parent company. With the co-operation of BSC (now Tata Steel), Delvemade devised an effective and long-term solution to a problem, which was affecting the metal roofs of many of its premises. The problem was cut edge corrosion. It can be caused by a combination of poor installation techniques and on-site cutting plus attack from acid rain and pollutants, which are then retained as moisture in critical roof overlaps and gutter overhangs. This results in corrosion of the profiled steel roof sheets. If not treated quickly and effectively, the damage could lead to the need for partial or complete roof replacement.