- Project plans
- Project activities
- Legislation and standards
- Industry context
Last edited 09 Jan 2020
Puddingstone (sometimes called plum-pudding stone or raisin-pudding stone) is a rock, typically a spotty, dark brown conglomerate that resembles a Christmas pudding. A conglomerate is a stone that is made up of very well-rounded pebbles that are bound together by a natural cementitious material. The colour of the stones is usually in sharp contrast to the colour of the sandy matrix in which they are set.
There are several different varieties of puddingstone with varying origins, composition and geographical distribution, such as those found in southern England, the US and Canada. The material has been used for building in the Home Counties (except Kent) for centuries.
Puddingstone typically comprises small, rounded stones of flint and sandstone, cemented together by a silica or iron oxide cement. It occurs in the London basin, Essex, Surrey, Buckinghamshire and some parts of Bedfordshire. It can sometimes feel very hard but some types are softer and can even be crumbled by hand. Puddingstone is therefore not regarded as a premium building stone. Nevertheless, it has been used for construction – mainly for churches – where nothing else was available or it was convenient to quarry.
Notable UK examples include the church at Chobham, Surrey; the tower of the parish church in Wokingham Berkshire; Beeleigh Abbey, Essex, and in some parts of Buckinghamshire, where it was used for the foundations of churches.
Puddingstone also occurs in the USA, such as in the Schunemunk mountain, Orange County, New York (where there is a 910m-thick bed), and also around Boston, as well as in Michigan and Ontario, Canada.
 Related articles on Designing Buildings Wiki
- Choosing stone.
- Defects in stonework.
- Finding stone to conserve historic buildings.
- Inspecting stone sample panels.
- Kentish ragstone.
- Modern Stonemasonry.
- Natural stone cladding.
- Natural stone.
- Portland Stone.
- Roof slates.
- Sourcing stone to repair Exeter Cathedral.
- Stone dressing.
- Types of stone.
Featured articles and news
Insights from New York.
A quick introduction to a very complicated subject.
CIOB suggests the economic reach of construction is double the official figures.
The first US building to achieve BREEAM Outstanding In-Use.
70 buildings from 70 years of Concrete Quarterly. Book review.
Conserving the iron roof at the Albert Dock.
Delivering an infrastructure revolution.
The admissibility of evidence.
How many can you name? 37 anyone?
CIOB respond to the points-based system.
When is the weather considered 'exceptionally adverse'?