Copp Cragg Sandstone is a unique and distinctive type of sandstone known for its fine-grained texture and variegated yellow/pink coloration. It is quarried near Otterburn in Northumberland, England. This sandstone stands out for its remarkable variation in color, ranging from a rusty buff background to swirls of browns and splashes of pink, giving it a striking and individual appearance.

The character of Copp Cragg Sandstone lies in its vibrant and diverse color palette, which makes it a favored choice for architectural projects seeking a distinct aesthetic. Its fine-grained texture suggests a smooth and uniform composition, providing both strength and ease of carving or shaping for architectural detailing.

Copp Cragg Sandstone has a notable history of usage in various prominent projects, including the Victoria Gardens Shopping Arcade in Harrogate, as well as the restoration of buildings at Durham Prison and Durham Castle. Additionally, it has been employed in recent projects such as The Rutland Building in Edinburgh, The Medical School in Glasgow, and the Royal (Dick) Vet School in Edinburgh, showcasing its continued relevance and popularity in contemporary architecture and construction.

Finishes available:Sawn Cut, Sanded, Rockfaced, Sandblasted, Bushhammered, Tumbled, Thermalled, Natural Cleft, Weatheredge
Copp Cragg Sandstone can be commonly used; Exterior - Interior wall and floor applications, fountains, pool and wall capping, stairs, paving
Slip Resistance (Note 1)  84  Wet Values > 40 are considered safe. 
Abrasion Resistance (Note 1) Not Tested Values <23.0 are considered suitable for use in heavily trafficked areas
Strength under load 
1) Compression(Note 2)  89.4 MPa Loaded perpendicular to the bedding plane ambient humidity
2) Bending (Note 1)  4.1 MPa Loaded perpendicular to the bedding plane ambient humidity 
 Not Tested Loaded perpendicular to the bedding plane ambient humidity 
Porosity and Water Absorption 
1) Porosity (Note 3)  17.8% 
2) Saturation Coefficient (Note 3)  0.57 
3) Water Absorption 4.6 % (by wt) 
4) Bulk specific gravity  2186kg/m3 
Resistance to Frost 
Flexural strength after Freeze/Thaw Test (Note 1)  3.6 MPa Loaded perpendicular to the bedding plane ambient humidity
Resistance to Salt 
Sodium Sulphate Crystallisation Test (Note 3) -0.99% Mean wt loss 
Resistance to Acidity 
Acid Immersion Test(Note 4)   Pass  
(Test methods Note 1 = EN1341, Note 2 = EN 1342, Note 3 = EN 1341 /BRE 141, Note 4 = BRE 141)

DECLARATION OF PERFORMANCE

To BS EN 771-6-2011 Natural Stone Masonry Units

Resistance to Fire...Class A1

Shear Bond Strength...Fixed Value

Apparent Density ...(Kg/m³)2190

Open Porosity.... (%)16

Water Absorpotion ...(g/m.sec²)81.9

Compressive Strength ...(Mpa)43.23

Flexural Strength ...(Mpa)3.5

Frost Resistance... (Cycles)84

Thermal Conductivity.... NPD