Interior Design Information for Architects and Specifiers

Welsh Slate has been utilised for internal flooring, fire hearths, countertops as well as window sills and thresholds over centuries.

The Riven finish has naturally good slip resistance and the thermal properties make Welsh Slate flooring the perfect choice particularly in conjunction with underfloor heating.

As a kitchen worktop the fact that Welsh Slate is highly resistant to both acid and alkali and has minimal water absorption make it a perfect practical choice. Welsh Slate for interiors is available in both Penrhyn Heather and Cwt-y-Bugail Dark Blue Grey.

The smooth satin finish achieved when the slate is Honed gives an easily maintained beautiful surface that shows off the natural markings which are unique to each piece of slate.

Our technical team can advise and guide specifiers to find the best size and finish options to suit each application




Welsh Slate Roofing 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.


Certification & Data Sheet Downloads

This area of our hard landscaping information for Architects and Specifiers provides an additional level of enhanced product data, in a consistent, structured format to help you save you hours of time chasing product information.



Internal and external flooring and stairs Penrhyn - PDF


Internal and external flooring and stairs Cwt-y-Bugail - PDF



BPWS 201 - DOP Welsh Slate CYB Modular Tiles (PDF)


BPWS 202 - DOP Welsh Slate PQ Modular Tiles (PDF)


Sales Office
Penrhyn Quarry
LL57 4YG

+44 (0) 1248 600656

Architects and Specifiers

  • Cases Studies
  • Data Sheets
  • CPD
  • NBS Source
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