DIY

Jargon Buster

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IJK

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Earth
A terminal to which the earth core is connected which will divert or shut off the power if the circuit is overloaded. Connects all circuits and metal components to the main earth terminal in a house.

Eaves
At the point where the roof rafters and wall meet, the eaves form an overhanging edge comprised of the soffit (the underside covering) and the fascia.

Edge cutter
A type of bit used to make decorative edging on wood.

Efflorescence
White crystalline deposit caused by damp.

Eggshell
A hardwearing paint with a matt finish.

Elbow
Pipe joint connecting pipes around a bend.

Element
Part of the water heating system, as found in an immersion heater. It is comprised of an inner wire surrounded by filler material enclosed in a copper or stainless steel sheath and transfers heat from the coil to the water.

End-grain
Exposed end of wood after cutting across the grain.

English bond
A type of brick bond. For more about types of brick bond, see Building a Wall.

Escutcheon
Metal plate around a keyhole.

Expansion joint
The narrow gap filled with treated fibreboard between bays of concrete to allow for expansion and contraction.