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Lacquer
A transparent protective coating material.

Laminated Beam
A beam made up of several layers of timber glued together with the grain in parallel.

Lath and plaster
Thin strips of wood nailed to interior surfaces such as studs and ceiling joists and covered with plaster.

Leadlight
Decorative glazing using small rectangular, diamond or other shaped pieces of glass, often coloured, and set in lead strips.

Lintel
A horizontal beam spanning an opening.

Load Bearing Member
A structural member to support vertical loads.

Load Bearing Wall
A wall designed to support loads in addition to its own weight.

Lobby
Found in Interwar housing, now usually called an entry foyer.

Louvre
A horizontal arrangement of overlapping and downward slanting timber or glass slats to admit air but exclude rain (often floor to ceiling in tropical climates).

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Manhole
A covered opening for access either to the underfloor area or the roof cavity.

Malthoid
A bituminous membrane for covering low roofs or floors in the inter war period.

Mansard-roof
Double-pitched roof sloping from ridge to eaves on 2 sides, but in 2 different planes with the lower being the steeper and a vertical wall on the other 2 sides.

Mantlepiece
Decorative structure around and above a fireplace, usually includes a mantleshelf for displaying decorative items.

Masonry
Originally construction by a mason in stone, but expanded to include brick, concrete block and fibro.

Mechanical Ventilation
The use of exhaust fans for the flow of air.

Membrane
A thin plyable sheet of impervious material.

Mesh
Welded steel used for concrete reinforcement.

Metal Trim
Metal sections used to “finish” gaps around door or window frames.

Mitre
A diagonal joint formed by 2 pieces of timber meeting at an angle.

Modillions
Blocks or brackets supporting a cornice or eaves (also known as dentils).

Mortice-and-tenon
A neat join between 2 timbers, one with a socket to receive the matching projecting end of the other, to make a firm connection without the need for nailing. The piece with the socket is called a female and the piece with the projecting end is called a male.

Moisture Barrier
A material used to prevent moisture into a building.

Mosaic
A decorative design used for floors, walls or ceilings finishes.

Moulding
A band or strip along a surface or joining 2 surfaces, such as an architrave around a door or window, a cornice where the wall and ceiling meet or a skirting where wall and floor meet.