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The Stone & Worktop Glossary


Decisions are more informed with knowledge!

The jargon used in defining stone terms can often become quite convoluted. The purpose of this section is to try to offer a clear explanation, in layman’s English, of the most common definitions relating to stone, worktops as a whole and their fabrication.

If you are looking for an explanation of a term not contained here please feel free to contact us and we will be happy to try to assist you.

Happy reading!


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Stone And Worktop Terms Beginning With The Letter J

Jack Arch

One having straight or nearly straight upper and lower surfaces. Also called flat or straight arch.


The upright side of a window or door gap, against which the sash or the door abuts.


The gap between fitted units or between dimensional stones and the neighbouring material.

Joint Reinforcement

Steel reinforcement located in or on mortar bed joints.


The finishing of joints between courses of masonry units before the mortar has hardened.

Jointing Scheme

Architectural plan detailing dimensions, place and configuration of stone units and joints related to the building. 


Flush, rake, cove, weathered, bead, stripped, and “V”.


A parallel part in the framing of a floor or ceiling.


In ashlars patterns, a piece of stone of higher rise than neighbouring stones which is used to end a parallel mortar joint at the point where it is set.

Open-faced Quarry

Open, reasonably level quarry at or near ground level. 


Designation of any chemical mix containing carbon (some of the simple compounds of carbon, such as carbon dioxide, are often classified as inorganic compounds). To date, nearly one million organic compounds have been combining or isolated. Many take place in nature; others are made by chemical synthesis.

Out of wind

to be out of wind is to have the arras of the stone not in similar or vertical lines. Stone which is.


Rock seen above or at ground level.

Over Burden

Waste stone, earth or other quarry material covering functional stone.

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