A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
H Clip– Small metal clips formed like an “H” that fits at the joints of two sheets to stiffen the joint. Normally used on ceilings.
Hacking (Cement plaster) – The roughening of solid backgrounds, by hand or mechanical methods, to provide a suitable key.
Head lap (Fixing Roof Tiles) – The distance by, which one course of tiles overlaps the course immediately below it.
Header (Masonry) – A masonry unit, which connects two or more adjacent leaves together.
Hearth– The fireproof area directly in front of a fireplace. The inner or outer floor of a fireplace, usually made of brick, tile, or stone.
Heat pump– A mechanical device which uses compression and decompression of gas to heat and/or cool a house or water.
Heel (Timber Roof Structures) – point on a truss at which the top chord and bottom chord intersect, or where the first vertical web intersects with the bottom chord in a stub-ended truss.
Heel cut– A notch cut in the end of a rafter to permit it to fit flat on a wall and on the top, doubled, exterior wall plate.
Heel joint (Timber Roof Construction) – The point on a truss at, which the top and bottom chords intersect, or where the first vertical web intersects with the bottom chord in stub ended trusses.
Highlights– A light spot, area, or streak on a painted surface.
Hip– A roof with four sloping sides. The external angle formed by the meeting of two sloping sides of a roof.
Hip (Fixing Roof Tiles) – The slope intersection of two inclined roof surfaces that meet at a salient angle
Hip roof– A roof that rises by inclined planes from all four sides of a building.
Hip truss (Timber Roof Structures) – used to form a hip-end configuration in conjunction with hip girders thus eliminating the gable wall
Hipped roof (Fixing Roof Tiles) – A pitched roof with hipped ends
Hollow masonry unit (Masonry) – A masonry unit, which contains cores that exceed 25% but do not exceed 60% of the gross volume of the unit
Honey combs– The appearance concrete makes when there are void areas in concrete.
Hurricane clip– Metal straps that are nailed and secure the roof rafters and trusses to the top horizontal wall plate.
HVAC– An abbreviation for Heat, Ventilation, and Air Conditioning