What Welsh Slate does

Welsh Slate operates three historic slate quarries in North Wales — Penrhyn (Bethesda), Ffestiniog (Blaenau Ffestiniog), and Cwt-y-Bugail — extracting and processing natural slate formed over 500 million years ago during the Ordovician period. The company produces and sells roofing slates in Capital, County, and Celtic grades from each quarry, alongside a broad portfolio spanning hard landscaping (decorative aggregates, walling, paving, coping stones, monoliths, fencing), exteriors (sills, rainscreen cladding, commercial walling and paving), interiors (worktops, fire surrounds, floor tiles in multiple finishes), bespoke products (memorial and standard slabs), and industrial minerals (granules and powders for roofing felt, automotive, and paint industries). Products carry Kitemark certification to BS EN 12326-1:2014 and are produced under ISO 9001, 14001, 45001, and 50001 management systems.

The company's go-to-market is sales-led and multi-channel. Roofing products flow through specialist distributors to heritage, commercial, and residential projects typically specified by architects; architectural and landscaping products are sold to the trade or directly to designers and homeowners; decorative aggregates reach garden centres, builders merchants, DIY stores, and consumers via the Breedon Special Aggregates e-commerce platform; construction aggregates are sold directly to ready-mix and precast concrete contractors; industrial minerals are sold directly to manufacturers. Welsh Slate invests heavily in specification-influence channels, including RIBA-accredited CPD seminars and Penrhyn Quarry factory tours (earning double CPD points), an interactive Slate Visualiser tool, a downloads portal with technical datasheets, and integration with NBS Source. A commercial representative office in Maasbracht, Netherlands, serves Belgium, France, Germany, and Switzerland. Welsh Slate Ltd is a subsidiary of Breedon Group plc, the UK's largest independent construction materials group. Notable projects include Rosslyn Chapel Trust, Port of London Authority, Shropshire Council (Cambrian Railways), Howell's School, Aldi, and historic central London church restorations, with multiple UK industry awards in 2025.

Name

Welsh Slate

Legal name

Welsh Slate Ltd

Website

https://welshslate.com

Company type

Private

Founded year

1970

Operating status

Operating

Headcount range

101–250 employees

Short description

Welsh Slate operates three historic North Wales quarries producing premium natural slate for roofing, landscaping, interiors, and industrial applications across the UK and Continental Europe, sold through specialist distributors, direct channels, and e-commerce as part of Breedon Group plc.

Ownership category

akta.pro rank

Product category

Natural Stone Building Materials

NAICS

Cut Stone and Stone Product Manufacturing (327991), Nonmetallic Mineral Mining and Quarrying (2123), Construction Sand and Gravel Mining (212321), Sand, Gravel, Clay, and Ceramic and Refractory Minerals Mining and Quarrying (21232)

SIC

Cut Stone & Stone Products (3281), Mining & Quarrying Of Nonmetallic Minerals (No Fuels) (1400), Wholesale-Lumber & Other Construction Materials (5030)

akta.pro primary industry

Other Dimension Stone (Slate, Sandstone, Quartzite, Travertine) Quarrying & Fabrication (IMAKAHAF)

akta.pro secondary industries

Slate Roofing (IMADAFAD), Aggregate Processing & Value-Added Products (Washing, Screening, Asphalt/Concrete Aggregates) (IMAKAHAH), Stonework & Masonry (Stone Veneer, Brick, Block) (HSAIACAI)

Keywords

• Natural slate roofing
• Decorative aggregates
• Hard landscaping materials
• Construction aggregates
• Slate cladding

Headquarters

HQ city

Bethesda

HQ country

United Kingdom

HQ region

Europe

Offices4 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Personnel, Marketing or Sales, Infrastructure, Technology or R&D

Revenue model

1. Roofing Slate Sales: Sale of high-quality natural slate roofing tiles in Capital, County, and Celtic grades from Penrhyn, Ffestiniog, and Cwt-y-Bugail quarries. Products supplied to heritage, commercial, and residential building projects.
2. Architectural and Hard Landscaping Products: Sale of slate products for walling, cladding, paving, coping stones, steps, thresholds, slate monoliths, rockery stones, feature stones, and fencing. Sold to architects, designers, and homeowners for domestic and commercial applications.
3. Decorative Aggregates: Sale of slate decorative aggregates in Plum, Blue, and Charcoal colours in 20mm and 40mm sizes, plus Mini Mulch Blend. Sold to garden centres, builders merchants, and DIY stores, as well as directly to consumers via e-commerce.
4. Construction Aggregates: Supply of construction-grade aggregates and specialist sands to the construction industry. Sold directly to ready-mixed concrete and precast concrete products contractors in road, housing, and utility sectors.
5. Industrial Minerals: Supply of specialist granules and powders for industries including automotive, paint, and roofing felt manufacturing. Sold directly to manufacturers in various industries.
6. Bespoke and Custom Products: Manufacture of bespoke slate products including memorial slabs, standard slabs, sawn scant in various finishes (unfinished, textured, honed) for memorial stones, decorative plaques, rainscreen systems, and designer kitchen and bathroom worktops.
7. RIBA CPD Seminars and Factory Tours: RIBA-accredited continuing professional development seminars and factory tours at Penrhyn Quarry. Earn double CPD points for architects and specifiers. Serves as both an educational service and marketing channel to influence product specification.

Pricing tiers

Go-to-market motion3 records

Distribution channels8 records

Marketing channels7 records

Core offering

Welsh Slate quarries and processes natural slate from three historic North Wales quarries (Penrhyn, Ffestiniog, and Cwt-y-Bugail), producing roofing slates in Capital, County, and Celtic grades, hard landscaping products (decorative aggregates, walling, paving, coping stones, monoliths, fencing), exterior cladding and sills, interior tiles, worktops and fire surrounds, bespoke stone slabs, construction aggregates, and specialist industrial minerals for roofing felt, automotive, and paint manufacturers. The company sells primarily to architects, contractors, developers, and the building trade through specialist distributors, direct enterprise sales, and consumer e-commerce channels.

Product overview

Welsh Slate is the world's leading supplier of high-quality natural slate for a range of exterior and interior design applications. The company operates three quarries in North Wales: Penrhyn, Ffestiniog, and Cwt-y-Bugail. The product portfolio comprises six interconnected categories: (1) Roofing - Penrhyn, Ffestiniog, and Cwt-y-Bugail slate tiles in Capital, County, and Celtic grades; (2) Hard Landscaping - decorative aggregates (Plum, Blue, Charcoal), walling, paving, coping stones, steps, monoliths, rockery, feature stones, and fencing; (3) Exteriors - sills, rainscreen cladding, commercial walling and paving; (4) Interiors - worktops, fire surrounds, and floor tiles in Honed, Riven, Antique, Machined, and Heather finishes; (5) Bespoke - memorial and standard slabs; (6) Aggregates & Minerals - construction aggregates, commercial decorative aggregates, and industrial minerals for roofing felt, automotive, and paint applications. Welsh Slate is a part of the Breedon Group plc.

Differentiator

Problem solved

Functional benefit

Products and services

• Penrhyn Welsh Slate Roofing Premium roofing slate from Penrhyn Quarry in Bethesda, North Wales, producing Heather Blue slate. Available in County-grade, Capital-grade, and Celtic-grade in various sizes (600mm x 300mm, 500mm x 300mm, 455mm x 250mm). Sold for heritage, commercial, and residential roofing projects.
• Ffestiniog Welsh Slate Roofing Blue Grey slate with a smooth riven texture from Ffestiniog Quarry in Blaenau Ffestiniog, North Wales. Available in Capital-grade, County-grade, and Celtic-grade for heritage and commercial roofing projects.
• Cwt-y-Bugail Welsh Slate Roofing Dark Blue Grey slate from Cwt-y-Bugail Quarry (Manod), the highest industrial site in the UK. Available in Capital, County, and Celtic grades for roofing applications.
• Welsh Slate Decorative Aggregates High-quality decorative slate chippings available in Plum, Blue, and Charcoal colors in 20mm, 40mm, and Mini Mulch (14-2mm) sizes. 100% British, 100% natural stone product. Sold through garden centres, builders merchants, DIY stores, and direct via Breedon Special Aggregates e-commerce.
• Welsh Slate Walling Natural slate walling products for hard landscaping applications, available with various face finishes including riven, textured, and honed options.
• Welsh Slate Paving and Patios Natural slate paving slabs suitable for exterior flooring, patios, and pathways. Available in Penrhyn and Cwt-y-Bugail varieties.
• Welsh Slate Coping Stones Slate coping stones for capping walls and providing finished edges to walling installations.
• Welsh Slate Steps and Thresholds Natural slate steps and threshold products for landscaping and architectural applications.
• Welsh Slate Monoliths Large slate stone features for landscaping focal points and architectural installations.
• Welsh Slate Sills Natural slate window sills for exterior architectural applications on residential and commercial buildings.
• Welsh Slate Rainscreen Cladding Slate cladding systems for rainscreen exterior wall applications in commercial buildings.
• Welsh Slate Commercial Slate Walling Commercial-grade slate walling for exterior applications on commercial buildings.
• Welsh Slate Commercial Slate Paving Commercial-grade slate paving for exterior flooring applications in commercial and public spaces. Available in Penrhyn and Cwt-y-Bugail varieties.
• Welsh Slate Worktops and Counters Natural slate worktops and counters for kitchen and bathroom interiors, featuring natural beauty and durability.
• Welsh Slate Fire Surrounds and Hearths Natural slate fire surrounds and hearths for interior applications.
• Welsh Slate Interior Tiles Interior slate floor tiles available in various finishes: Honed (smooth finish with subtle sheen), Riven (natural appearance), Antique (subtle textured appearance), Machined (Stippled/Bush Hammered or Brushed finish), and Heather finishes. Available in Penrhyn Heather and Cwt-y-Bugail Dark Blue Grey colors.
• Welsh Slate Memorial Slabs Bespoke memorial slabs crafted from Welsh Slate for commemorative purposes, available in various finishes.
• Welsh Slate Standard Slabs Sawn scant slate products in standard sizes for various bespoke applications, available in unfinished, textured, or honed finishes.
• Welsh Slate Minerals (Industrial) Specialist slate granules and powders for industrial applications including bituminous roofing felts (pigmented and natural colours), resin-bonded products, automotive, and paint industries. Available in two grades.
• Welsh Slate Construction Aggregates High-quality construction aggregates including Type 1X permeable sub-base material and gabion stone for road, housing, and utility sectors. Sold directly to ready-mixed concrete and precast concrete products contractors.
• Welsh Slate Commercial Decorative Aggregates Commercial volumes of decorative slate aggregates available in three colours (Plum, Blue, Charcoal) and two sizes (20mm, 40mm), supplied direct.

Named customers9 records

Segments6 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration2 records

Feature5 records

Partnerships

One partnership is on record.

• Breedon Group plccoreOthersWelsh Slate is a subsidiary of Breedon Group plc, the largest independent construction materials group in the UK. The partnership provides Welsh Slate with access to group-wide resources, distribution channels, and operational synergies across the broader construction materials business.

Scale indicators7 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Cupa Pizarras: World's largest producer and supplier of natural slate, headquartered in Spain. Direct competitor to Welsh Slate across roofing and architectural slate markets globally, with comparable product portfolio (roofing, flooring, cladding) and similar specification-led GTM through architects.
• Burlington Slate: UK-based slate and stone producer operating quarries in the Lake District. Direct competitor to Welsh Slate in British roofing, architectural, and landscaping slate, serving similar architects, contractors, and heritage restoration customers.
• SSQ Group (Samaca/Slate Supplies): Specialist supplier of premium natural slate (Spanish, Brazilian, Chinese origin) and stone products, competing with Welsh Slate in UK roofing and architectural specification markets.
• Glendyne (La Glendyne Slate): Canadian natural slate quarry and producer in Quebec, a premium direct competitor to Welsh Slate in the global roofing slate specification market, particularly in heritage and high-end residential.

Emerging players

• Russwood (Russwood Ltd): Scottish-based supplier of natural slate, timber cladding, and decking for architectural applications. Comparable to Welsh Slate in the UK specification channel for premium natural roofing and exterior materials, though with a broader timber focus.

Broad incumbents

• Marshalls plc: UK's leading hard landscaping and building products company offering paving, aggregates, and natural stone. Competes with Welsh Slate in decorative aggregates, paving, and commercial landscaping channels, though as part of a much broader product portfolio.
• Aggregate Industries (Holcim): UK subsidiary of Holcim producing aggregates, asphalt, ready-mixed concrete, and stone products. Overlaps with Welsh Slate's construction aggregates and decorative stone segments, with broader infrastructure focus.
• Forterra plc: UK-listed manufacturer of building products including clay bricks, blocks, and precast concrete. Adjacent competitor in the broader UK construction materials market that competes for specification share on commercial construction projects.

Regional players

• Stoneworld (Stoneworld Ltd): UK natural stone importer and distributor offering slate, sandstone, limestone, and porcelain paving. Comparable to Welsh Slate in decorative aggregates and paving channels, but positioned as an importer/distributor rather than a quarry operator.

Others

• Breedon Group plc: UK's largest independent construction materials group, parent company of Welsh Slate. Relevant context for understanding Welsh Slate's ownership, capital allocation, and group distribution synergies via Breedon Special Aggregates e-commerce platform.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/WelshSlateLtd
• Facebookfacebook.com/WelshSlateLtd

Compliance6 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Welsh Slate