Maintenance Period
An agreed period after completion of a contract during which a contractor is required to make good, at his own expense, any work which needs repair.
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Man Hole
Access point to a drain with a removable cover at ground level.
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Marine Plywood
Exterior-grade plywood.
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Mastic
A waterproof material used to seal joints.
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Metre Cubed (m3)
A unit of volume, length x width x height - each measurement in metres.
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Metre Squared (m2)
A unit of area, length x width - both measurements in metres.
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Mitre
A corner joint formed by cutting two pieces of wood at an equal angle (usually 45 degrees).
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Moisture-vapour permeable
Used to describe a finish which allows moisture to escape from timber, allowing it to dry out, while at the same time protecting the wood from rainwater or damp. Another term for 'Microporous'.
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Mono-pitch roof
A roof that slopes in one direction only.
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Mortar
A mixture of sand, cement and water, sometimes with various sealants and preventatives added.
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Mortise and Tenon
A strong wood joint. The mortise is a hole cut into one piece of wood and the tenon is the piece that goes into it, usually at right angles. It is then glued and can also be screwed.
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Muck
Tradesmen's word for wet mortar, bonding or plaster
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Mullein
A short vertical or horizontal strip of wood separating panes in a window or door.
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Mullion
A thin upright strip of wood dividing individual panes in a window.
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Multipoint locking system
A high security system which consists of multiple bolts, activated by one lock mechanism.
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