Ffestiniog Blue Grey roofing slates grace King’s Cross Station Find out more Blue Grey Ffestiniog roofing slates adorn St Pancras Station Find out more ST MARTIN'S GOES BACK TO THE FUTURE WITH FFESTINIOG WELSH SLATE Find out more The Imposing Rijksmuseum roof slated in Ffestiniog Blue Grey Find out more
Image of Cwt-y-Bugail Corduroy Cladding

Welsh Slate exterior construction Architects and specifiers Information

Welsh Slate’s superb physical properties make it an ideal material for the exterior envelope of a building.

The features that make it the finest roofing slate available translate perfectly to cladding, walling, and paving. Welsh Slate is unaffected by ultra-violet light and normal temperature ranges. It is colour fast and resistant to both acid and alkali making it the ideal choice in harsh environments.

Welsh Slate copings and sills give the specifier the ability to match the cladding or the paving or use Welsh Slate as a contrast with other building materials. Although our products are steeped in history and heritage Welsh Slate lends itself to modern innovative design.

Welsh Slate offer full technical backup and are happy to advise on recommended sizes for individual applications.


Our technical team will help guide you to find the best solutions to any challenges in your design scheme.


*Welsh Slate RIBA certified Factory tour and seminar both earn double points towards your CPD time

Welsh Slate EXTERIOR Products on NBS Source

Welsh Slate has partnered with NBS to provide a single source for all product information.

This platform brings together the NBS BIM Library, NBS Plus and Product Selector which means all our products can be specified directly into projects by importing the enhanced product data directly from NBS Source using the NBS Chorus cloud-based specification writing platform.

Below is an overview from NBS Source offering the full Roofing product range all authored to both CAWS and Uniclass 2015 standards. Simply select the relevant Welsh Slate product(s) and highlight the relevant items to match your product and project requirements.


Sales Office
Penrhyn Quarry
LL57 4YG

+44 (0) 1248 600656

Arrange a CPD

Arrange a CPD

Click to arrange a RIBA approved CPD seminar and/or a CPD factory tour

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Exteriors Gallery

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