CTMS have provided the following. I have removed the names of staff. "CTMS have needlegunned to roof, and then sanded it. Some of the old covering was hard, and chipped away nicely, and some was softer and needed to be sanded off. We also then can have a good look at the roof and weld up any holes, and treat any rust patches. We then plan to apply an etch primer, as the roof is galvanized, and paint with two coats of Johnstone’s micaceous iron oxide paint. The roof vents have been removed and sent to max colour in Frome for sand blasting, and will be primed and painted with the same paint by us."