A B C D E F G H IJK L M
N O PQ R S T U V W XYZ
IJK
Index disc
Either a red or blue small plastic disc that fits into the top of the capstan head on a rising spindle tap to indicate whether the tap supplies hot or cold water.
Insulation
Any material used to prevent or limit the passage of heat or sound. Also a non-conductive material surrounding electrical wires or cores.
Interceptor chamber
The interceptor chamber is part of a drainage system where the drain from the property connects to the main drain. An interceptor chamber will be covered by a manhole cover.
Jamb
The vertical side section of a door or window frame.
Jointer
A tool used in brick and block work for shaping the pointing.
Joist
Timber or steel beams for supporting floors and ceilings.
Kerf
A groove produced by a saw cut.
Key stone
The central support of a structure, such as in the centre of an arch
Keying
The process of creating a rough surface to provide a better grip for plaster, paint or adhesive.
Knocking block
A small offcut piece of timber used to produce a tight fit between tongue-and-groove boards. The knocking block is held against the edge of the board and tapped a couple of times with a hammer.
Knurled
Generally used to describe a knob or handle that has a series of fine grooves impressed on the surface to improve grip.