Infestation: The presence of insects, rats, vermin or other pests.

Infill: Area of the railing system bounded by the railing posts, cap, rail and the deck.

Infiltration: The uncontrolled inward air leakage into a building.

Inspect: To examine readily accessible systems and components safely, using normal operating controls, and accessing readily accessible areas, in accordance with these Standards of Practice.

Inspected Property: The readily accessible areas of the buildings, site, items, components and systems included in the inspection.

Inspection: The process of an inspector collecting information through visual observation during a walk-through survey of the subject property, conducting research about the property, and then generating a meaningful report about the condition of the property based on the observations made and research conducted by the inspector.  A commercial inspection requires the inspector to make observations, conduct research, and report findings.

Inspector: One who performs the commercial property inspection.

Installed: Attached or connected such that the installed item requires a tool for removal.

InterNACHI: International Association of Certified Home Inspectors

Internal Drainage: A drainage system on a low-slope roof where water flows from the high points, usually the edge areas, to a built-in drainage system that leads down through the interior of the building.

Interview: To discuss with those who have knowledge about the subject property.

Intrusive: Destructive.

Inventory: Documentation of permanently installed systems and components noted by the inspector during the walk-through survey of the inspection. An inventory may or may not include their condition, but, at minimum, notes their presence (such as type, manufacturer, or model, where applicable).

IPM: Integrated pest management

IR: infrared

Joist: The purpose of the joist is to provide a nailing and support system for the floor sheathing and for the floor itself. The joist supports the live and dead loads placed on the floor assembly. Attic or ceiling joists are used to provide floor support in attic spaces, and also help prevent the roof rafters from collapsing downward and pushing outward.

Key Box: A lockable device which permits the fire department to access the building in an emergency.

Kickout Flashing: A special type of flashing that diverts rainwater away from the cladding and into the gutter. If missing, it often results in concentrated areas of water accumulation and potentially severe damage to exterior walls. Also known as diverter flashing.

Label: A label on equipment that contains operational design specifications and data, also referred to as label plate, nameplate, and data plate.

Labeled: Devices, equipment or materials to which have been affixed a label, seal, symbol or other identifying mark of product evaluation.

Ladder Cage: A means of enclosure that completely encompasses a portion of the climbing space of a fixed ladder and is permanently attached to the side rails. It is also referred to as a cage guard or basket guard.

Lap Seam: Two overlapping membranes that meet and are seamed, sealed or bonded in some way.

Latent Heat: Heat that is felt and not measured.

Lavatory: A sink or wash basin.

Ledger: Dimensional lumber attached to the building framing and used for supporting the section of a deck adjacent to the building.

Length of Climb: The total distance between the start and endpoints of a fixed ladder, including any breaks that exist between multiple ladder installations.

Let-In Brace: Nominal 1-inch-thick boards applied diagonally into notched studs.

Level: Term used to describe any horizontal surface whereby all sides are at the same elevation.

Life Expectancy: Average function time, in years, assuming regular maintenance.

Life Expectancy: The average function time, in years, assuming regular maintenance.

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