Insulation with a heat reflective surface and backing if either sheet metal, aluminum foil, etc.
Insulation, rigid
Nonflexible panels, used for both sound and thermal insulation, of materials such as Styrofoam and urethane foam or hard plastics such as polyvinyl chloride or alternately, cellular glass, corkboard, balsa wood, etc.
Insulation, thermal
Since heat transfer through an insulator happens by conduction or radiation, thermal materials are used to lessen the flow of heat in or out of steam pipes, buildings, refrigeration units, etc. Different materials give better insulation for certain applications and are available in a variety of forms and materials such as foams of polyurethane or polystyrene; loose fill insulators are of diatomaceous silica, perlite, calcium silicate, plastic beads, charcoal granules, vermiculite or charcoal granules; rigid insulator are PVC, balsa wood, cellular glass, corkboard, urea, polyurethane or polyethylene. Fiberglass, sprays of macerated paper or insulating concrete, aluminum foil, etc. are other types of thermal insulation.
Insulator
Materials that do not conduct electricity are used to control and direct the flow of electrical current in products use electricity. Electrical insulators range from Teflon to varnish coating and are chosen with the use conditions in mind.
Insurable interest
An interest in a person or property that would cause on a loss if that person or property were injured or ruined.
Insurable title
Title to a property that can be insured against defects and disputes.
Insurance
Policies that guarantee compensation for losses from a specific cause. Various forms of insurance cover against fire, flood, earthquake, liability, etc.
Insurance binder
Temporary insurance arrangement used until a permanent policy can be issued.
Intake
Opening of a machine or the suction device employed to bring water, fuel or air into the system.
Intake ventilation
The part of a ventilation system used to draw fresh air in. Usually vents installed in the soffit or along the eaves of a building.
