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Portland Stone - Internal Facades/ Cladding - Natural Limestone Internal Cladding

Verified by manufacturer 1 month ago

Bowers Roach

Albion Stone plc Variant:
Third party certifications:
  • BES 6001

    BES 6001

    Certificate type

  • EPD

    EPD

    Certificate type

  • ISO 14001 Environmental Management Systems

    Certificate type

  • ISO 45001 Health and Safety Management

    Certificate type

  • ISO 9001 Quality Management

    Certificate type

Portland stone for internal facades and cladding.

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Application

Suitable for internal wall and ceiling cladding applications.

Description

Portland Stone is extracted from one of the largest mines on Portland and although there is no colour variation in the basic matrix of the stone, the shell content and texture of each bed will reflect the light differently, creating the eight variations of the stone. All of the beds of Portland stone are recommended for internal facades.


Bowers Roach:

Contains large grey shell fragments that include Turreted Gastropods (Portland screws), as well as large clam shells. It has a large number of holes scattered throughout due to the removal of fossil shells by percolating rain.


Bowers Basebed:

Clean basebed that may contain small grey shell fragments that are randomly distributed across the stone.


Grove Whitbed:

Predominantly grey shells with some large white shell fragments, mainly large thin clams up to 100 mm long laid parallel to the bedding. Some banding is evident in larger slabs.


Fancy Beach Whitbed:

A moderately high shell content, which are predominantly grey. There are small voids throughout the slab and the texture varies.


Jordans Whitbed:

A medium shell content, mainly large, thin clams up to 80 mm long laid parallel to the bedding. The stone mellows over time to grey/ white due to grey and white fragments.


Jordans Basebed:

Fine grain Portland stone containing small grey shell fragments evenly distributed across the stone.


Ostrea Patch Reef Whitbed:

The shells are randomly distributed throughout the stone, including many large grey and white oyster shell fragments. It is typically coarse with some vuggy patches.


Stonehills Whitbed:

The stone has a low to medium shell content that are predominantly grey with some white fragments that are randomly distributed across the stone. Banding is evident, particularly in larger slabs.


Features and benefits:

  • Creamy/ white in colour.
  • For internal wall and ceiling finishes.
  • Uses the UK's most environmentally friendly techniques.
  • From the Jordans/ Bowers mine and Stonehills mine on the Isle of Portland.
  • Regularly assessed and accredited by the completely independent British Standards Institute.
  • CE marked.

General information

Color

Cream

White

Grey

Manufacturer guidance

Creamy/ white is typical Portland colour with grey shell included.

Finish

Textured

Material

Limestone

Shape

Circle

Oval

Triangle

Square

Rectangle

Show more

Length

Bespoke

Width

Bespoke

Height

Bespoke

Uniclass

Pr_25_71_14_56 Natural stone panelsPrimary

CAWS

H51/110 Cladding

H51/110 Cladding

M40/115 Natural stone covering to

M40/10 Natural stone covering to

Specification data - Natural stone panels

Stone slabs

-

Standards

To BS EN 1469: 2004.

Stone type

-

Name (traditional)

Portland stone.

Petrological family

Limestone.

Guidance for specification option:

Open textured oolitic limestone formed from ooliths in a micrite matrix.

Colour

Creamy white.

Manufacturer guidance

Creamy/ white is typical Portland colour. The content of grey shell can vary the overall colour depending on the density of included shell.

Origin

Bowers Quarry, Isle of Portland, UK.

Thickness (minimum)

To BS 8298, 12 mm.

Guidance for specification option:

20 mm (maximum).

Compression strength

To BS EN 1962, 43.02 MPa.

Guidance for specification option:

Lowest expected value 30.0 MPa, highest expected value 90.5 MPa.

Manufacturer guidance

Average value.

Flexural strength

To BS EN 13161, 4.07 MPa.

Guidance for specification option:

Lowest expected value 4.67 MPa, highest expected value 12.50 MPa.

Manufacturer guidance

Average value.

Density

To BS EN 1936, 2191 kg/m³.

Guidance for specification option:

Lowest expected value 2123 kg/m³, highest expected value 2331 kg/m³.

Manufacturer guidance

Average value.

Porosity

To BS EN 1936, 17.58%.

Guidance for specification option:

Lowest expected value 12.70%, highest expected value 18.40%.

Manufacturer guidance

Average value.

Saturation coefficient

To BS EN 12370, 2.88%.

Guidance for specification option:

Lowest expected value 0.67, highest expected value 0.85.

Manufacturer guidance

Average value.

Light reflectance

57.00 (mean value).

Guidance for specification option:

Value from Grove Whitbed test, however these stones are very similar.

Manufacturer guidance

Light reflectance tested using NCL Colour Scan instrument - Grit 60.

Breaking load

To BS EN 13364, 4032 N.

Guidance for specification option:

Lowest expected value 3492 N, highest expected value 5949 N.

Manufacturer guidance

Breaking load at dowel hole (at 75 mm thick). Average value.

Water absorption (maximum)

To BS EN 13755, 6.02%.

Guidance for specification option:

Lowest expected value 3.40%, highest expected value 8.40%.

Manufacturer guidance

Average value.

Sustainability data

Contains Red List materials

No

Country of material origin

United Kingdom

Country of product manufacture

United Kingdom

Embodied carbon

A1-A3 (production stage) as defined in BS EN 15804

0.14 kg CO₂ eq/kg

Recyclability

100

Recycled content

As defined in clause 7.8 of BS EN ISO 14021

0 %

EPD

Third party certifications

BES 6001

BES 6001

BES 6001

EPD

EPD

EPD (Environmental Product Declaration)

ISO 14001 Environmental Management Systems

ISO 14001 Environmental Management Systems

ISO 14001

ISO 45001 Health and Safety Management

ISO 45001 Health and Safety Management

ISO 45001

ISO 9001 Quality Management

ISO 9001 Quality Management

ISO 9001

Literature

CE - Internal Wall - Bowers Roach

CE - Internal Wall - Bowers Roach

CE - Internal Wall - Bowers Basebed

CE - Internal Wall - Bowers Basebed

CE - Internal Wall - Bowers Whitbed

CE - Internal Wall - Bowers Whitbed

CE - Internal Wall - Fancy Beach Whitbed

CE - Internal Wall - Fancy Beach Whitbed

CE - Internal Wall - Grove Whitbed

CE - Internal Wall - Grove Whitbed

CE - Internal Wall - Jordans Basebed

CE - Internal Wall - Jordans Basebed

CE - Internal Wall - Jordans Whitbed

CE - Internal Wall - Jordans Whitbed

CE - Internal Wall - Jordans Roach

CE - Internal Wall - Jordans Roach

TDS - Bowers Basebed

TDS - Bowers Basebed

TDS - Bowers Roach

TDS - Bowers Roach

TDS - Bowers Whitbed

TDS - Bowers Whitbed

TDS - Fancy Beach Whitbed

TDS - Fancy Beach Whitbed

TDS - Grove Whitbed

TDS - Grove Whitbed

TDS - Jordans Basebed

TDS - Jordans Basebed

TDS - Jordans Roach

TDS - Jordans Roach

TDS - Jordans Whitbed

TDS - Jordans Whitbed

Case studies

1 & 2 New Ludgate

1 & 2 New Ludgate

Apple Store, Regent Street

Apple Store, Regent Street

Blackfriars Station

Blackfriars Station

Green Park Tube Station

Green Park Tube Station

Kimbolton Row

Kimbolton Row

La Zagaleta, Spain

La Zagaleta, Spain

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