\n The Cwt-y-Bugail slate quarry in Ffestiniog, North Wales has been producing slates from 1840, and is currently the highest industrial site in the UK \n Cwt-y-Bugail is now an open cast quarry although originally the quarry was mined \n During World War 2, many of Britain’s most valuable paintings were secretly stored in its caverns for safe-keeping! \n Cwt-y-Bugail roofing slates are a blue/grey colour and have a distinctive texture which makes them highly sought after, and also popular as an architectural material \n Cwt-y-Bugail roofing slates come in standard sizes of 50x25cm (other sizes are available on request), and in 3 thicknesses: Capital grade (5.5mm nominal thickness) County grade (7.5mm nominal thickness) Celtic grade (9.5mm nominal thickness) \n Cwt-y-Bugail slates conform to BS EN 12326-1: 2014 (W1, S1, T1), hold BS Kitemark accreditation and are generally expected to outlive the life of a building \n These slates have a lifespan measured in centuries and include a 100 year guarantee \n
