WHICH GRADE OF PENRHYN WELSH SLATE DO YOU NEED?
Penrhyn Welsh Slate roofing is available in three thickness grades: Capital, County, and Celtic. The thickness of the three specific grades is to suite the range of different roofing project requirements.
The quality of the stone will allow production of roofing slates in excess of 1 metre in length, but the majority of the production is focused on the core production sizes (500 x 300 mm, 400 x 250 mm and 300 x 200 mm) in three thickness grades; Capital (5.5 mm), County (7 mm), and Celtic (9mm). Each grade of slate has a subtly differing character, but all have the intrinsic quality that makes Penrhyn® Slate the envy of the slate world.