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| Steel Metal and Waterproofing. |
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| Providing continuous service to the NY Metro area, |
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| for over 54 years! |
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| 54 YEAR, FAMILY OWNED, THIRD GENERATION |
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| Roofing Glossary |
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Head lap – Shortest distance from the butt edge of an overlapping shingle to the upper edge of a shingle in the second course below. The triple coverage portion of the top lap of strip shingles.
HEX shingles – Shingles that have the appearance of a hexagon after installation.
Hip – The inclined external angle formed by the intersection of two sloping roof planes. Runs from the ridge to the eaves.
Hip roof – A type of roof containing sloping planes of the same pitch on each of four sides. Contains no gables.
Hip shingles – Shingles used to cover the inclined external angle formed by the intersection of two sloping roof planes.
Horsefeathers – See feathering strips.
HARDWARE – Metal accessories such as door knobs, towel bars, toilet paper holders, etc.
HATCH – An opening in a deck; floor or roof. The usual purpose is to provide access from inside the building.
HAWK – A flat wood or metal tool 10 inches to 14 inchessquare with a handle used by plasterers to carry plaster mortar or mud.
HAZARD INSURANCE – Insurance for a building while it is under construction.
HEADER - Framing members over windows, doors, or other openings.
HEAT STRENGTHENED GLASS – Flat or bent glass that has been heat-treated to a specific surface and/or edge compression range to meet the requirements of ASTM C 1048, kind HS. Heat-strengthened glass is approximately two times as strong as annealed glass of the same thickness when exposed to uniform static pressure loads. Heat-strengthened glass is not considered safety glass and will not completely dice as will fully tempered glass.
HEEL BEAD – Sealant applied at the base of a channel, after setting the lite or panel and before the removable stop is installed, one of its purposes being to prevent leakage past the stop.
HERMETIC SEAL – Vacuum seal (between panes of a double-paned window i.e. insulated glass unit or IGU). Failure of a hermetic seal causes permanent fogging between the panels of the IGU.
HIGH EARLY CEMENT – A portland cement sold as Type III sets up to its full strength faster than other types.
HIP ROOF – A roof which rises by inclining planes from all four sides of a building.
HOISTWAY – A shaftway for the travel of one or more elevators.
HONEYCOMB – (1) Areas in a foundation wall where the aggregate (gravel) is visible. Honeycombs can be usually be remedied by applying a thin layer of grout or other cement product over the affected area. (2) Method by which concrete is poured and not puddled or vibrated, allowing the edges to have voids or holes after the forms are removed.
HUB – In plumbing, the enlarged end of a pipe which is made to provide a connection into which the end of the joining pipe will fit.
HVAC – Heating Ventilation and Air Conditioning.
HYDROELECTRIC ELEVATOR – An elevator where liquid is pumped under pressure directly into the cylinder by a pump driven by an electric motor without an accumulator between the pump and cylinder.
HATCH – An opening in a deck; floor or roof. The usual purpose is to provide access from inside the building.
HIP ROOF – A roof which rises by inclining planes from all four sides of a building. |
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