Penrhyn 'Bangor Blue'®

  • Penrhyn Bangor Blue roofing slates are generally accepted as the best quality roofing slates found anywhere in the world
  • They have been produced at the Penrhyn quarry outside Bethesda, since the late 1700s
  • Penrhyn slate deposits date back to the Cambrian era (600 million years ago) and pre-date most other slate deposits found in other parts of the world. The slate deposits in this quarry are extremely pure and free from damaging impurities
  • Penrhyn slate is an attractive purple or heather blue colour, and these slates cover many of the world’s most prestigious buildings – from Buckingham Palace in London to St. Patrick’s Cathedral in Dublin
  • These slates have worldwide appeal and, in addition to the home markets of Britain and Ireland, are popular in France, Germany, Holland, Australia and New Zealand
  • Bangor Blue slates come in standard sizes of 50x30cm (other sizes 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)
  • Penrhyn roofing slates conform to BS EN 12326-1: 2014 (W1, S1, T1), hold BS Kitemark certification, and are generally expected to outlive the life of a building
  • Bangor Blue slates have a life expectancy measured in centuries and a 100 year guarantee
  • We offer an Accredited CPD Seminar on 'Welsh Slate as a Roofing Material' - Book Now
The Welsh Slate Penrhyn Quarry in Wales

Product Detail

Palladian Style Home Cultra Co Down

Bangor Blue Modern House

Described as 'Irish Palladian' in style this gorgeous house in Cultra Co Down is slated with Bangor Blue 500x300 slates.  The owners of the house Colin and Barbara Barry always wanted to build their o…

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Colour and Finish 'Heather Blue' Riven Textured
Available in Sizes 500 x 300mm (Other Sizes On Request)
Available in Grades Celtic, County, and Capital
Nominal Thickness Celtic 9.5mm, County 7.5mm, Capital 5.5mm
Minimum Pitch 22.5 deg for standard 100mm h/lap *normal exposure only*(for pitches below 22.5 deg please consult LBS Technical Dept)
Maximum Headlap (std) All LBS slates are holed for 100mm head-lap
Alternative Headlap For availability and advice please contact LBS
Gauge 200mm for slate pre-holed for 100mm head-lap
Batten Size Please refer to BS 5534 or SR 82:2017
Nails Copper, Aluminium or Silicon Bronze
Slate Dimensions/ Grade 500x300mm Celtic Grade 500x300mm County Grade 500x300mm Capital Grade
Weight per sqm Laid (kg) 62.75 48.80 38.35
Slates per sqm at 100mm h/lap 16.6 16.6 16.6