Limestone is a sedimentary rock composed largely of the minerals calcite and aragonite, which are different crystal forms of calcium carbonate. Like most other sedimentary rocks, Limestone is composed of grains; however, most grains in Limestone are skeletal fragments of marine organisms such as coral or foraminifera. It is these skeletal remains which give Limestone it’s unique and beautiful structure and colouring.
Limestones are used extensively in both new building and restoration where their ease of working facilitates the production of cladding, ashlar and other forms of walling. They are also suitable for flooring.
Many Limestones are particularly suited to carved and moulded work. Components such as window sills and door jambs, soffits and copings, heads and mullions are readily produced to add interest and enrichment to building facades.
Limestones generally have good load bearing properties and weathering characteristics although correct detailing is important as with all building materials. Limestones must not be used above Sandstone on exterior elevations.
The properties of individual types of stone can vary considerably and advice should always be sought on the selection of suitable stones, both for general and particular applications.
Take a look through some of the colour variations available.