Residential New Home Construction Glossary


House Building Glossary - I

IIC - A new system utilized in the Federal Housing Administration recommended criteria for impact sound insulation.

INR - (Impact Noise Rating) A single figure rating which provides an estimate of the impact sound insulating performance of a floor-ceiling assembly.

I-beam - A steel beam with a cross section resembling the letter I; used for long spans as basement beams or over wide wall openings, such as a double garage door, when wall and roof loads bear down on the opening.

I-joist - Manufactured structural building component resembling the letter "I"; used as floor joists and rafters; include two key parts: flanges and webs; available in lengths up to 60 feet long.

Incandescent lamp - A lamp employing an electrically charged metal filament that glows at white heat; typical light bulb.

Index - The interest rate or adjustment standard that determines the changes in monthly payments for an adjustable rate loan.

Infiltration - The passage of air from indoors to outdoors and vice versa; term is usually associated with drafts from cracks, seams or holes in buildings.

Inside Corner - The point at which two walls form an internal angle, as in the corner of a room.

Insulating Glass - Window or door in which two panes of glass are used with a sealed air space between; a.k.a. double glass.

Insulation - Any material high in resistance to heat transmission that, when placed in the walls, ceiling, or floors of a structure, and will reduce the rate of heat flow.

Insulation, Thermal - Any material high in resistance to heat transmission that, when placed in the walls, ceiling, or floors of a structure, will reduce the rate of heat flow.

Insulation Board, Rigid - A structural building board made of coarse wood or cane fiber in -and 25/32-inch thickness; can be obtained in various size sheets and densities.

Interest - The cost paid to a lender for borrowed money.

Interior Finish - Material used to cover the interior framed areas of walls and ceilings.

Interlocking Shingles - Individual shingles that mechanically fasten to each other to provide wind resistance.

Irrigation - Lawn sprinkler system.

Hip Shingles - Shingles used to cover the inclined external angle formed by the intersection of two sloping roof planes.

Home Run (electrical) - The electrical cable that carries power from the main circuit breaker panel to the first electrical box, plug, or switch in the circuit.

Honeycombs - The appearance concrete makes when rocks in the concrete are visible and where there are void areas in the foundation wall, especially around concrete foundation windows.

Hose Bib - An exterior water faucet (sill cock).

Hot Wire - The wire that carries electrical energy to a receptacle or other device in contrast to a neutral, which carries electricity away gain; normally a black wire.

Humidifier - An appliance normally attached to the furnace, or portable unit device designed to increase the humidity within a room or a house by means of the discharge of water vapor.

Hurricane Clip - Metal straps that are nailed and secure the roof rafters and trusses to the top horizontal wall plate.

Hurricane Ties - Metal fasteners used to secure rafters in structures subject to hurricane winds.

 

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