Wall definition
- The surface of glazing (except glazing in doors).
- Any part of a ceiling which slopes at an angle of more than 70º to the horizontal.
But a wall does not include:
- Doors and door frames.
- Window frames and frames in which glazing is fitted.
- Architraves, cover moulds, picture rails, skirtings and similar narrow members.
- Fireplace surrounds, mantle shelves and fitted furniture.
However, Approved document C, Site preparation and resistance to contaminants and moisture, suggests that a wall is:
Any opaque part of the external envelope of a building that is at an angle of 70° or more to the horizontal.
 Buttressing wall
A wall designed and constructed to afford lateral support to another wall perpendicular to it, support being provided from the base to the top of the wall.
A wall constructed from two skins of masonry, the outer skin of which can be brickwork or blockwork and the inner skin of which is generally of blockwork, separated by a cavity to prevent the penetration of moisture and to allow for the installation of thermal insulation.
 Compartment wall
A wall constructed to create a compartment, forming a barrier to the spread of smoke, heat and toxic gases.
See Curtain wall for more information.
A wall forming the external enclosure of a building, including part of a roof pitched at an angle of more than 70° to the horizontal, if that part of the roof adjoins a space within the building to which persons have access (but not access only for repair or maintenance).
 Internal load-bearing wall
A non-load bearing wall that separates the internal spaces of a building.
See Partition wall for more information.
A wall that stands on the lands of 2 or more owners or a wall that is on one owner's land but is used by 2 or more owners to separate their buildings.
See Party wall for more information.
A wall comprising an outer skin of panels and an airtight insulated backing wall separated by a ventilated cavity. Some water may penetrate into the cavity but the rainscreen is intended to provide protection from direct rain.
See Rainscreen for more information.
 Separating wall
A wall or part of a wall which is common to adjoining buildings.
 Solid wall
 Supported wall
See Trombe wall for more information.
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