GBR Roofing is the best and expert roofing service provider in Great Casterton, Rutland. Over 20 years of experience with Collyweston stone slate, offering traditional craftsmanship and quality roofing to the highest of standards. The smallest slates are at the ridge line and the largest is at the eaves level, which means that the slates increase smaller with each course. To find out more, go to our website.