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Half-timbering
A term used to describe a building in which a timber frame has the spaces between the timbers filled in with brickwork or other material. In buildings constructed in the late 19th and early 20th centuries the visual effect of half-timbering was sometimes achieved by applying non-structural thin timbers to the face of a load-bearing wall.
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Handhole
 An opening at the bottom of a downpipe, with a cover-plate. If the pipe chokes the plate can be taken off to allow the pipe to be cleared with rods. Sometimes referred to as a rodding plate.
Related Words
Down pipe
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Harl pointing
 A form of pointing in which the mortar is spread over the surface of the masonry, leaving the central part of the stones exposed. Sometimes colloquially referred to as 'bag rubbed'.
Related Words
Masonry; Mortar; Pointing
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Harl, Harling
A form of render in which a mixture of cement or slaked lime and coarse sand or fine gravel is applied to (traditionally hurled at) a masonry or brick wall. For the best effect the mixture should be dashed against the wall. The hard finish obtained by the use of cement can be damaging to the underlying masonry or brickwork.
Related Words
Cement, cementitious; Lime mortar, render, limewashing; Masonry
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Haunching
The lower part of an arch. Also refers to a sloping built-up shoulder of mortar to help to shed water from a right-angled junction, for instance between a chimney stack and a chimney can.
Related Words
Arch
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Header tank
A small cold-water tank for topping up, for instance, a central-heating system. Sometimes called an expansion tank.
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High relief
 Sculpture in which the front face of the figure or other image is formed in three dimensions, but the back remains attached to the stone or other background material
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Hopper (window)
 A part of a window, hinged along its base, which can open inwards.
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Hopper head
A box to catch rainwater, mounted at the top of a downpipe. It can be made of cast-iron, lead, aluminium or plastic.
Related Words
Aluminium; Cast iron work; Down pipe; Lead
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Hydraulic lime
Lime made by burning limestone containing some clay, and therefore a natural cement. If mixed with water it will set quickly, even under water. There are different grades of hydraulic lime, which can be used to make mortars or renders of different degrees of hardness and water-resistance.
Related Words
Lime mortar, render, limewashing; Mortar; Render
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