Les Vardes Quarry

Route de Port Grat

St Sampson

Guernsey GY2 4TF

Paul Gibson (Sales Manager)

T: +44 (0)1481 256426 

M: +44 (0)7781 130235




Ronez Quarry

La Route du Nord

St John



Paul Pinel (Sales Manager)

T: +44 (0)1534 867212 or +44 (0)1534 867200

M: +44 (0)7829 925625




Crushed rock aggregates produced at the Ronez quarries are supplied direct to the local construction industry, as well as forming the basis for an extensive range of construction products including ready mixed concrete, asphalt and concrete products.

Our aggregates are used in:

  • Ready mix and precast concrete
  • Road construction and surfacing
  • Sea defences
  • Water and effluent filtration
  • Pipe bedding

Products offered:

  • Crushed materials
  • Dusts
  • Face materials
  • Fill materials
  • Single size and graded materials
  • Sub-bases

Sand and gravel

We are a leading supplier of sand and gravel used in construction and building materials.

Our materials are used in ready mix concrete, precast concrete products, asphalt and other construction materials.

Products offered:

  • Face materials
  • Fill materials
  • Single size and graded materials
  • Sharp and building sand

So whatever your crushed rock, sand and gravel needs, we’re sure to be able to help.

Ready Mixed Concrete

Our ready-mixed concrete plants in Guernsey and Jersey supply a range of products from floor screeds and foamed concrete to designed mixes for structural applications.

Customers can choose to collect from the plant, have the concrete delivered by our fleet of mixer trucks and we offer a concrete pumping service with boom pumps ranging in size to 32m.

We have fully computerised batching plants, supplying ready mixed concrete in the following combinations:

Our aggregates are used in:

  • Plasticised / retarded concrete
  • Superplasticised concrete for high strength and workability
  • Air entrained concrete for paving and durability
  • Waterproof concrete for watertight construction
  • Coloured concrete for aesthetic applications
  • Polypropylene and steel fibre concrete
  • Self compacting concrete


Delivering asphalt loads for any surface.

We manufacture and supply British and European standardised asphalt including a range of asphalt mixes suitable for
your road surfacing specifications
 or other applications.

Get in touch today for details on our specialised and standard asphalt product portfolio including:

  • Base courses
  • Binder courses
  • Permeable asphalt mixes (porous material)
  • Surfacing courses including hot rolled asphalt
  • Pre-coated chippings
  • Sustainable asphalt

For smaller commercial or DIY applications such as household driveways, we also cater for you by providing an small load and collect service.

Not only do we offer performance asphalt products, we are fully committed to ensuring the best possible customer journey.

We know how important it is that your project is delivered on time, no matter how big or small.

Concrete Blocks

We manufacture and supply concrete blocks for use in a variety of projects – from single storey housing to multi-storey developments and commercial buildings.

Ronez concrete blocks are manufactured in a wide range of sizes and strengths (dense concrete blocks and lightweight concrete blocks), also in varying formats and finishes including fairfaced which offers you total flexibility. Other strengths and sizes are available upon request.

All our Ronez range of products are manufactured under the quality procedures of BS EN ISO 9001 and are compliant with BS EN 771-3. This ensures reliability and quality of all construction materials provided.


We manufacture and supply concrete and natural stone flag paving, setts and block paving for your commercial landscaping area.

We offer a choice of distinctive colours, textures, and sizes suitable for any urban, residential, traditional or contemporary environments.

Granite, sandstone and yorkstone natural stone is available in both the paving slabs and setts ranges.

Investment Highlights

About SigmaRoc

SigmaRoc was established to pursue a
buy-and-build strategy in construction materials
focussed on Niche Markets.

Management team

SigmaRoc brings together a solid board and
industry management team with sector and regional
M&A, strategy and operational experience.

Contact Information

London Office

7-9 Swallow Street
London W1B 4DE
United Kingdom

Phone: +44 207 129 78 28


For any queries on SigmaRoc please contact us.


©2018 SigmaRoc

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