- Penrhyn Bangor Blue roofing slates are generally accepted as the best quality roofing slates found anywhere in the world
- Produced at the Penrhyn quarry outside Bethesda since the late 1700s
- The slate deposits in this quarry are extremely pure and free from damaging impurities
- Penrhyn slate is an attractive purple or heather blue colour
- Seen on many of the world’s most prestigious buildings – from Buckingham Palace in London to St. Patrick’s Cathedral in Dublin
- Bangor Blue slates come in standard sizes in 3 thicknesses:
- Capital grade (5.5mm nominal thickness)
- County grade (7.5mm nominal thickness)
- Celtic grade (9.5mm nominal thickness)
- BS EN 12326-1: 2014 (W1, S1, T1) certified
- BS Kitemark certified
- These slates are generally expected to outlive the life of a building and have a life expectancy measured in centuries
- Backed by a 100 year guarantee
- We offer an Accredited CPD Seminar on 'Welsh Slate as a Roofing Material' - Book Now
