Beautiful and Durable Welsh Slate from Yates & Company Ltd

Yates and Company Ltd are the largest stockists of both types of Welsh Slate: Penrhyn Heater Blue and Cwt-y-Bugail Blue Grey. We offer an unrivalled stocking and distribution service. Our Welsh slate specialists also hole and shape slates to meet customer specifications.

Welsh Slate Ltd produce two types of roofing slate from quarries at Bethesda and Ffestiniog in North Wales. Slates from these two areas are supplied in three grades of thickness, Capital Grade (5.5mm ), County Grade (7.0mm), and Celtic Grade (9.0 mm).

Welsh slate is arguably the finest quality roofing material known to man.

This 21st century industry is a far cry from the labour intensive production methods of previous years. The modern production facilities of both Bethesda and Ffestiniog employ highly skilled craftsmen, operating the most modern equipment available to the industry. These Welsh facilities produce a healthy supply of both the Penrhyn and Cwt-y-Bugail slate, whose reputation has been amassed during the many centuries of their existence. Yates & Co are proud of their long association with Welsh Slate Ltd and we are regarded as the country’s pre-empt agent, stockist and distributor of these world renowned Welsh slates.

Welsh slate roof
Grades of thickness:
Capital – 5.5mm Nominal – Generally smooth textured.
County – 7.0mm Nominal – Slightly pronounced texture.
Celtic- 9.0mm Nominal – Moderate pronounced texture.

Core Production Sizes:


Penrhyn slate is quarried at Bethesda, Wales. They are heather blue in colour with subtle shading variations which distinguish a natural slate roof from artificial tiles. These non-fading slates come in different core production sizes which are;


Cwt-y-Bugail slates are quarried at Ffestiniog in North Wales and is dark Blue/Grey. They come in different core production sizes which are;


Benefits of natural Welsh slates

  1. Durable

Welsh Slate are one of the most durable roof coverings known to man. Slate has been quarried from Bethesda region for over 700 years.

  1. Conspicuous and attractive

Both the Heather Blue and Blue/Grey colours are gorgeous and appealing to look at. Most home and business owners opt to use these slates because of this fascinating quality.

  1. Cost-effective

Welsh slates require very little maintenance. When fitted in accordance with BS: 5534 Welsh Slate will often outlast the building they cover.

Welsh slate