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| Insulated cavity wall
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Wall where all of the interior space, either between the framing or the solid portions of the masonry wall, is filled in with insulation material. This is done to lessen noise transmitted through the wall or heat loss. |
| Insulated siding
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Available with factory-laminated polystyrene backing. In addition, separate drop-in backer board is available which can be combined with the siding panels at the time of installation. Laminated and drop-in backer board thicknesses vary from 3/8" to 1/2", and can be used with 8", double 4" or double 5" siding. |
| Insulated window
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Window manufactured with at least two panes of glass with air space between the panes, which helps to stop heat from transferring through the glass. |
| Insulating board
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Any board suitable for insulating purposes, usually manufactured board made from vegetable fibers, such as fiberboard. |
| Insulating concrete
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To provide an R-factor, which is a measurement of resistance to temperature transmission, of about 1.1.per inch of thickness concrete must have an expanded mica aggregate of 6 to 1, aggregate to cement. |
| Insulating flange kit
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Used to prevent galvanic corrosion on dissimilar metal flange joints, the kit consists of electrically non-conductive gasket, sleeves and washers. To isolate the shanks of the bolts from the inside diameter of the flange bolt holes, the sleeves are fitted over the bolts or studs that hold the flanges together. Washers are positioned under the nuts to isolate them from the flange. Then, the gasket is positioned between the flanges. Removal of any remnant of electrical conductivity prevents the lowest metal on the galvanic scaled from being corroded by the touching metal. |
| Insulating glass
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Panels of glass separated by air space. |
| Insulating rating
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Effectiveness of insulation is determined by the number given to it. R-values measure thermal resistance, K-values measure the heat conductivity and U-values indicate the overall heat flow between air on the warm and cold sides of the insulated area. |
| Insulating varnish
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Plastic compound or other synthetic material, non-electrically conductive varnish, used to coat and insulate copper wire. |
| Insulation
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Materials, such as fiberglass, rock wool, urethane foam, polystyrene, cellulose and vermiculite, which are used to slow heat loss. Insulation comes in different forms: blanket, batt, rigid, fill, reflective, made of glass wool, cotton or wood fibers. Organic materials must be pretreated to become insect, fire and decay resistant. |
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