saddle bars

In window glazing, the small iron bars to which the lead panels are tied.

saddleback coping

Coping weathered both ways from centre of section.

sandstone

Sedimentary rock composed of sand grains naturally cemented together.

scabbled

Roughly faced with pick or hammer.

scagliola

Cement or plaster and marble chips or colouring matter to imitate marble. Popular

in the 17th and 18th centuries.

scant

Slab of stone sawn on two sides.

sedimentary rock

Rock formed by deposition, usually in water, of particles of inorganic or organic origin.

sett

Stone roughly squared for roads and paving.

shaft

The trunk of a column between the base and capital.

shake

Fractures that occur across the cleavage plane.

sinking

A recess.

slaked lime

Product formed when quicklime is slaked with water.

slaking

Adding water to quicklime to form putty or dry hydrate.

slip

Narrow piece of stone inserted between large blocks.

springer

(1) Kneeler at the base of a ramped coping.

(2) The lowest stone of an arch.

springing line

Level from which an arch springs.

square

Tool for determining and testing right angles.

stitch

Reinforcement introduced into a wall to bond fractures.

stooling

Raising of a weathered surface, to form a level seating.

stopped end

Termination of moulding by returning the moulding into the wallface.

string course

Horizontal moulded projection incorporating a drip.