KM Roofing Edinburgh, Roofers Edinburgh – here a concrete tiled pitch roof being cleared of moss in South Edinburgh by our roofers. Heavy moss build up on a roof is harmful to the roof tiles and should be removed by hand using scrapers and a wire brush. Although time consuming, this method does not damage the roof tiles. A copper strip will be fitted to the ridge tiles to prevent further moss build up in the future and prolong the life of the roof tiles. Roofing work by KM Roofing Edinburgh. KM Roofing Edinburgh are members of the National Federation of Roofing Contractors- NFRC and Flat Roofing Alliance (FRA).