Beautiful and Durable Welsh Slate from Yates & Company Ltd
Yates Slate is a trusted UK supplier of welsh slate, providing top-quality natural roofing materials. These slates come from a tradition spanning over seven centuries in North Wales, where skilled craftspeople have perfected extraction techniques. Our welsh slate appears on prestigious projects across the UK and continental Europe – from historic buildings to modern homes.
Our Welsh Roofing Slates
We offer two excellent varieties of slate:
Penrhyn Heather Blue: Quarried from Penrhyn Quarry near Bethesda, this slate displays a beautiful blue-purple colour that weathers gracefully over time. This source ranks among the largest slate quarries in Wales, producing consistently high-quality roofing materials.
Cwt-y-Bugail Blue Grey: From Ffestiniog, this slate features a rich blue-grey tone that looks fantastic on any building. It comes from a fine grained slate deposit that yields exceptionally uniform roofing slates.
Both options deliver the outstanding quality that makes welsh slate famous across the roofing industry!
Why Choose Welsh Slate for Your Roof
Welsh slate offers unmatched durability for your roofing project. These natural materials resist UV light and harsh weather brilliantly, making them extremely durable for decades. They’re widely considered the most durable slate available today.
Even better, they need only a low level of maintenance compared to other roofing materials. This makes welsh slate perfect for both homes and commercial buildings where long-lasting performance matters.

Available Grades & Sizes
We stock three quality grades to match different needs:
Capital Grade – 5.5mm Nominal: Features a flat uniform finish ideal for prestigious buildings
County Grade – 7.0mm Nominal: Offers excellent durability with slightly more texture
Celtic Grade – 9.0mm Nominal: Provides a pronounced fine grained riven surface with character
Each grade comes in various sizes, giving you flexibility for all types of roofing projects. These slates can be cut into thin sheets while staying strong – a testament to their superior quality!
Benefits of Natural Welsh Slate
Choosing welsh slate means investing in a useful and productive material with a life span that typically outlasts the building itself. These slates absorb very little water and naturally resist moss growth, keeping your roof looking great for generations.
Their highly practical properties work well for projects in the UK and more distant markets. The material transported easily without damage, allowing delivery wherever needed.
Sustainably Sourced & Expertly Supplied
Our slates formed during the Cambrian period under perfect geological conditions. Today, they’re extracted using modern quarrying methods that respect the environment.
Each slate undergoes careful on-site grading before entering commercial production. The special qualities of welsh slates come from unique geology found in limited parts of Wales, making them truly exceptional building materials.
Trusted Supplier of Natural Welsh Roofing Slate
Yates Slate has built its reputation as a leading distributor of Welsh slates through excellent service and product quality. Our facility in Lancashire enables quick delivery across the UK, supporting architects, roofers and builders working on roofing projects of all sizes.
Our knowledgeable team understands the specific requirements of different welsh slate types, ensuring you get the perfect materials for your projects requirements.
Get in Touch
Ready to use natural slate for your roofing project? Contact our team today for advice, quotes, or to discuss your specific requirements.
If you are looking for an alternative to welsh slate, check out our range of Spanish slate stock or Brazilian roof slates. You can also take a look at our project gallery to see how these excellent materials can transform your building project!