Verifisert av produsent for 5 måneder siden
Bowers Roach
EPD
Sertifikattype
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:
Farge | Cream White Grey ProdusentveiledningCreamy/ white is typical Portland colour with grey shell included. |
Overflatebehandling | Honed |
Materiale | Limestone |
Form | Other Formless Circle Oval Triangle |
Lengde | Bespoke |
Bredde | Bespoke |
Høyde | Bespoke |
Uniclass | |
CAWS | Q24/310 Natural stone slabs M40/115 Natural stone covering Q25/330 Natural stone setts Q25/30 Natural stone pavers Q25/310 Natural stone slabs Q25/10 Conventional bound paving system M40/10 Natural stone covering Q24/322 Natural stone setts |
Klassifiseringsdata | |
Stone denomination | |
Petrological family | Limestone. Veiledning for spesifikasjonsvalg: Open textured oolitic limestone formed from ooliths in a micrite matrix. |
Colour | Creamy white. Veiledning fra produsentCreamy/ 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). Veiledning for spesifikasjonsvalg:
Veiledning fra produsentTRRL pendulum test: grit 120 (flooring). Average values. |
Breaking load | To BS EN 13364, 4032 N. Veiledning for spesifikasjonsvalg: Lowest expected value 3492 N, highest expected value 5949 N. Veiledning fra produsentBreaking load at dowel hole (at 75 mm thick). Average value. |
Water absorption (maximum) | To BS EN 13755, 6.02%. Veiledning for spesifikasjonsvalg: Lowest expected value 3.40%, highest expected value 8.40%. Veiledning fra produsentAverage value. |
Compression strength | To BS EN 1962, 43.02 MPa. Veiledning for spesifikasjonsvalg: Lowest expected value 30.0 MPa, highest expected value 90.5 MPa. Veiledning fra produsentAverage value. |
Flexural strength | To BS EN 13161, 4.07 MPa. Veiledning for spesifikasjonsvalg: Lowest expected value 4.67 MPa, highest expected value 12.50 MPa. Veiledning fra produsentAverage value. |
Density | To BS EN 1936, 2191 kg/m³. Veiledning for spesifikasjonsvalg: Lowest expected value 2123 kg/m³, highest expected value 2331 kg/m³. Veiledning fra produsentAverage value. |
Porosity | To BS EN 1936, 17.58%. Veiledning for spesifikasjonsvalg: Lowest expected value 12.70%, highest expected value 18.40%. Veiledning fra produsentAverage value. |
Saturation coefficient | To BS EN 12370, 2.88%. Veiledning for spesifikasjonsvalg: Lowest expected value 0.67, highest expected value 0.85. Veiledning fra produsentAverage value. |
Abrasion resistance | To EN 14157, 22.93. Veiledning for spesifikasjonsvalg: Lowest expected value 20.20, highest expected value 25.93. Veiledning fra produsentAverage value. |
Light reflectance | 57.00 (mean value). Veiledning for spesifikasjonsvalg: Value from Grove Whitbed test, however these stones are very similar. Veiledning fra produsentLight reflectance tested using NCL Colour Scan instrument - Grit 60. |
NBS LCA hjelper fagfolk i byggebransjen med å måle miljøpåvirkningen og identifisere produkter med lave karbonutslipp for mer bærekraftige prosjekter.

Inneholder Red List-materialer | No |
Opprinnelsesland for materiale | United Kingdom |
Produksjonsland for produktet | United Kingdom |
Materiale | Limestone |
| Carbon dioxide equivalent | |
Karbondioksidekvivalent, som definert i BS EN 15804 Sertifisert | |
Fase Normalisert enhet (kg CO₂ eq/kg) Deklarert enhet (kg CO₂ eq/kg) Fase:A1–A3 (Produksjonsfase) Normalisert enhet :0.04 (kg CO₂ eq/kg) Deklarert enhet :0.04 | |
Resirkulerbarhet | 100% |
Resirkulert innhold | 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