Fine grained blue/grey sandstone.
Extracted in Lancashire this blue/grey sandstone has a very fine grain and is extremely durable due to its high strength and low porosity.
Dunhouse Blue is therefore an excellent material for paving, steps, plats, copings etc, or in fact any stone in an exposed position.
It was the ideal choice for Historic Scotland when choosing a stone for the spitters for the restoration of the Great Hall Stirling Castle as these stones are exposed to the weather and are designed to carry rainwater without a lead flashing to protect them.
Dunhouse Blue can also be used as ashlar and can carry a highly polished finish.
|Thin Cladding, Generix Lite System||✓|
|Dressed / Carved Stone||✓|
|Rock Faced Walling||✓|
|External Flooring / Paving||✓|
|External Steps / Platts||✓|
|Internal Flooring (requires sealant)||✓|
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)||2523|
|Open Porosity (%)||5.59|
|Water Absorpotion (g/m.sec²)||10.64|
|Compressive Strength (Mpa)||110.24|
|Flexural Strength (Mpa)||15.7|
|Frost Resistance (Cycles)||84|
Stirling Castle Spitters
- Stone Used: Dunhouse Blue
- Stone Supplied To: Stirling Stone
- Year: 1998