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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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Ice Dam – Condition formed at the lower roof edge by the thawing and re-freezing of melted snow on the overhang. Can force water up and under shingles, causing leaks.
Interlocking Shingles – Individual shingles that mechanically fasten to each other to provide wind resistance.
INCOMPATIBILITY – Descriptive of two or more materials which are not suitable to be used together.
INDEMNIFICATION CLAUSE – Provision in a contract in which one party agrees to be financially responsible for specified types of damages, claims, or losses.
INFILTRATION- The process by which air leaks into a building. In either case, heat loss results. To find the infiltration heating load factor (HLF), the formula to account for the extra BTU's needed to heat the infiltrated air is:
BTU/HR = building volume x air changes x BTU/cu.ft/hr x TD (TD is temperature difference)
INSIDE DRAIN – In roofing, a drain positioned on a roof at some location other than the perimeter. It drains surface water inside the building through closed pipes to a drainage system.
INSULATING GLASS UNIT – Two or more lites of glass spaced apart and hermetically sealed to form a single-glazed unit with an air space between each lite. (Commonly called IG units.)
INSULATION (1) – Generally, any material which slows down or retards the flow or transfer of heat. Building insulation types are classified according to form as loose fill, flexible, rigid, reflective, and foamed-in-place. All types are rated according to their ability to resist heat flow (R-Value). (2) In electrical contracting, rubber, thermoplastic, or asbestos wire covering. The thickness of insulation varies with wire size and type of material, application or other code limitations.
INSULATION FASTENERS – Any of several specialized mechanical fasteners designed to hold insulation down to a steel or a nail able deck.
INTERIOR GLAZED – Glazing infill set from the interior of the building.
INTERLAYER – In glazing, any material used to bond two lights of glass and/or plastic together to form a laminate.
INTERPLY – Between two layers of roofing felts that have been laminated together.
IRMA – Insulated (or Inverted) Roof Membrane Assembly. In this system the roof membrane is laid directly on the roof deck, covered with extruded foam insulation and ballasted with stone, minimum of 1000 lbs. per square.
INCOMPATIBILITY – Descriptive of two or more materials which are not suitable to be used together.
INSIDE DRAIN – A roof drain positioned on a roof at some location other than the perimeter. It drains surface water inside the building through closed pipes to a drainage system.
INSULATION – Material which slows down or retards the flow or transfer of heat.
INSULATION FASTENERS – Any of several specialized mechanical fasteners designed to hold insulation down to a steel or a nailable deck.
INSULATION VENT – A vent placed into the insulation which extends above the BURM.
INTERPLY – Between two layers of roofing felts that have been laminated together.
IRMA – Insulated (or Inverted) Roof Membrane Assembly. In this system the roof membrane is laid directly on the roof deck, covered with extruded foam insulation and ballasted with stone, minimum of 1000 lbs. per square. |
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