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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.

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Stone And Worktop Terms Beginning With The Letter L

Lap

To overlap 1 surface with another.

Lateral Support

Method whereby walls or columns are braced in the upright span by beams, floors or roofs, or walls in the parallel span by columns, pilasters, buttresses or cross walls.

Latex Additive

Rubber or resins in water which coalesce to form a constant film that imparts specific properties to Portland cement produce.

Lathe

Machine for turning columns, balusters, and other rounded stone work; also for rubbing and polishing surfaces of same.

Lava

A universal term applied to igneous rocks such as basalt and rhyolite, that erupted from the earth by volcanic action.

Lead

The fragment of a wall built up and racked back on successive courses. A line is attached to leads as a guide for constructing a wall between them. 

Lead Buttons

Lead spacers in the solid parallel joints to support the upper stones until mortar has been set.

Ledger

A slab of stone used parallel to cover a tomb.

Legs

Upright dimension stone used on sides of a fireplace aperture.

Lewis Bolt

A tapered head tool wedged into a tapered recess in the edge of a dimensional stone unit, used for lifting purposes and hanging soffits.

Lewis Holes

Holes cut into stone for lifting and supporting for the duration of setting of cut stones and sometimes for permanent support. Holes are checked for the particular Lewis (lifting device or hook) to be used.

Lime Putty

Hydrated lime on plastic form ready for addition to mortar.

Lime-Hydrated

Carbon hydroxide or slaked lime that has been concentrated to a powder.

Lime-Hydraulic

Containing compounds which cause a chemical set in reaction with water.

Limestone

Limestone is a sedimentary rock composed primarily of calcite or dolomite. The variety of limestone used as dimensional stone are typically well consolidated and exhibit a minimum of graining or bedding direction. Limestones that contain not more than five percent magnesium carbonate may be termed calcite limestone, as well-known from those that contain between five and forty percent magnesium carbonate, and from those that contain in excess of forty percent as the mineral dolomite. Recrystallized limestone’s and compact, dense, relatively pure microcrystalline variety that are capable of taking a polish are known as marbles. Look at limestone.

Lime-Hydraulic

A string tense taut as a guide for laying the top edge of a course of stonework units.

Line

A string tense taut as a guide for laying the top edge of a course of stonework units.

Line Pin

A metal pin used to fasten line used for position of stonework units.

Liners

Structurally sound sections of stone cemented and doweled to the back of thin stone units; to give greater strength, extra bearing surface, or to increase joint thickness.

Lintel

A beam placed or constructed over an gap in a wall to carry the superimposed load.

Lippage

A condition where one edge of a stone is higher than neighbouring edges, giving the finished surface a shabby appearance.

Lipping

generally refers to flagging materials. Lapping is caused when 2 pieces of material to be joined together are slightly twisted  or warped causing one or more edges to be higher or lower than the adjacent material.

Load Bearing

A structural arrangement or element designed to carry loads including to its own weight.

Lug

A tiny projecting part of a bigger stone part, to engage an neighbouring unit or to serve as an aid in handling.

Lug Sill

A tiny projecting part of a bigger stone part, to engage an neighbouring unit or to serve as an aid in handling.

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