The Sparrow Peck or Convict Pick Finish is characterised by hand etched pitting of the surface of the stone. This heritage finish is commonly used as cladding and provides an exceptional, traditional feel to a building.
SPARROW PECKED PROJECTS
How to specify
General: Sandstone shall be Mount White - Brown sandstone by Gosford Quarries.
Stone Type: Mount White Sandstone
Stone Finish: Diamond sawn, gang sawn, honed, rockfaced, Sparrow pecked & custom
Sizes: As specified by architect
Fixing: Adhesive Material to be compatible to substrate medium. Stone cladding above 2.3 metres in height to be mechanically fixed. Refer to ASSA Natural Stone Design manual for more information.
Sealing: Sealer to be specified by designer or installer
Typical technical Specification
Bulk Density (ASTM C97-83): 2.27 tones/ m³
Absorption by weight (ASTM97-83): 4.4%
Modulus of Rupture: 8.9Mpa Dry, 2.5MPa Wet
Compressive Strength (ASTM C170-87): 57MPa Dry, 22 MPa Wet