Perryfield whitbed

//Perryfield whitbed
Perryfield whitbed 2017-06-27T15:16:24+00:00
Portland limestone perryfield whitbed

Portland limestone Perryfield whitbed

Perryfield whitbed is a tightly grained stone with very little shell content. Used as a match for basebed where more durability is required.

Perryfield whitbed is durable and suitable for most applications as a general building stone, including paving and copings where a predominantly clean stone is required. This Portland stone is normally carvers’ first choice, due to the low shell content and is often used internally for cantilevered staircases and paving.

We have extensive stocks of the Perryfield whitbed stone with blocks typically from 1 tonne upwards to 15 tonnes.

Sizes Available: – Maximum Typical Range

Bed Height: 600mm to 1500mm

Length: 800mm to 2000mm

Technical data

From 0.40 m³ to 3.8 m³
Please contact us requesting relevant CE testing information.

Perryfield whitbed CE test report

Please contact us requesting relevant specification clauses

Oolitic limestone originating from the upper Portlandian formation of  Jurassic age.

Principally formed from micritic ooids in a sparse micritic matrix, the stone contains many shell fragments in the size range 1mm to 5mm. Some compaction of the ooids is present but the matrix exhibits moderate intergranular porosity with interlinking of pores. No clay or other minerals are apparent.

See test data for strength values.
Perryfield whitbed is known to be a durable building stone and has been used extensively within the United Kingdom and in Belgium. It exhibits a low saturation coefficient, good strength and good resistance to salt.

Historic use indicates that it is capable of service life well in excess of 60 years providing that exposure conditions are not subject to severe frosts or high concentrations of sulphur dioxide and that good stone detailing methods are employed to give best protection from surface water ingress.

It is estimated that the likely weathering rate of this stone would lie between 1mm to 3mm per 100 years in normal exposure conditions.

Perryfield whitbed is suitable for internal flooring and is a tightly grained stone.
Overall, should be suitable for use in most aspects of construction including flooring, paving, load bearing masonry and cladding including areas where a long service life is needed or where high salt concentrations are expected.

Variation

Please note that limestone is a natural material and is subject to variations in colour, pattern and texture. It is therefore essential that you visit our quarries to select the range required. Only full bed height samples, each numbered and acknowledged by all parties involved, could be considered contractual.