Verified by manufacturer 2 months ago
Bowers Roach
BES 6001
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 external paving.
Suitable for external paving applications.
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.
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.
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.
Heritage Portland Stone:
The shells are randomly distributed across the stone, with some areas of low shell content and some areas of high shell content. Varied texture is evident across the slab.
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.
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:
Color | Cream White Grey Manufacturer guidanceCreamy/ white is typical Portland colour with grey shell included. |
Finish | Honed |
Material | Limestone |
Shape | Other Formless Circle Oval Triangle |
Length | Bespoke |
Width | Bespoke |
Height | Bespoke |
Material | Limestone |
Uniclass | |
CAWS | Q25/50 Natural stone slabs Q25/115 Natural stone slab paving overlay system Q25/110 Natural stone slab paving system Q25/26 Natural stone slab paving systems M40/10 Natural stone covering to M40/115 Natural stone covering to |
Stone denomination | |
Petrological family | Limestone.Guidance for specification option: Open textured oolitic limestone formed from ooliths in a micrite matrix. |
Colour | Creamy white.Manufacturer guidanceCreamy/ white is typical Portland colour. The content of grey shell can vary the overall colour depending on the density of included shell. |
Name (traditional) | Portland stone. |
Origin | Bowers Quarry, Isle of Portland, UK. |
Performance requirements | |
Slip resistance | PTV 82.85 (wet); 78.75 (dry).Guidance for specification option:
Manufacturer guidanceTRRL pendulum test: grit 120 (flooring). Average values. |
Breaking load | To BS EN 13364, 4032 N.Guidance for specification option: Lowest expected value 3492 N, highest expected value 5949 N. Manufacturer guidanceBreaking 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 guidanceAverage value. |
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 guidanceAverage 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 guidanceAverage 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 guidanceAverage value. |
Porosity | To BS EN 1936, 17.58%. Guidance for specification option: Lowest expected value 12.70%, highest expected value 18.40%. Manufacturer guidanceAverage value. |
Saturation coefficient | To BS EN 12370, 2.88%. Guidance for specification option: Lowest expected value 0.67, highest expected value 0.85. Manufacturer guidanceAverage value. |
Abrasion resistance | To EN 14157, 22.93. Guidance for specification option: Lowest expected value 20.20, highest expected value 25.93. Manufacturer guidanceAverage value. |
Light reflectance | 57.00 (mean value). Guidance for specification option: Value from Grove Whitbed test, however these stones are very similar. Manufacturer guidanceLight reflectance tested using NCL Colour Scan instrument - Grit 60. |
Contains Red List materials | No |
Country of material origin | United Kingdom |
Country of product manufacture | United Kingdom |
Material | Limestone |
Embodied carbonA1-A3 (production stage) as defined in BS EN 15804 | 0.14 kg CO₂ eq/kg Self declared |
Recyclability | 100% |
Recycled contentAs defined in clause 7.8 of BS EN ISO 14021 | 0 % |
TDS - Jordans Whitbed
TDS - Jordans Roach
TDS - Jordans Basebed
TDS - Grove Whitbed
TDS - Fancy Beach Whitbed
TDS - Bowers Roach
TDS - Bowers Basebed
TDS - Bowers Whitbed
CE - External Paving - Bowers Roach
CE - External Paving - Bowers Whitbed
CE - External Paving - Fancy Beach Whitbed
CE - External Paving - Grove Whitbed
CE - External Paving - Jordans Roach
CE - External Paving - Jordans Whitbed