| Caulking.
A flexible material such as a mastic or asphalt plastic cement used to seal a gap between two surfaces to prevent leaks. | |
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| Chalk line.
A line made on the roof by snapping a taut string dusted with chalk. It is used to align.
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| Change Order.
A document that modifies the plans and specifications and/or the price of the construction contract. | |
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| Circuit Breaker.
A device that looks like a switch and is usually located inside the electrical panel or circuit breaker box. It is designed to (1) shut of the power to portions or the entire house and (2) to limit the amount of power flowing through a circuit. The switch is rated by amperes, the measure of current.
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| Clapboard .
Strips of wood nailed on the exterior of walls to overlap and shed water. | |
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Classes of fire resistence:
Class "A" fire resistance - The highest fire-resistance rating for roofing per ASTM E-108. Indicates that roofing is able to withstand severe exposure to fire originating from sources outside the building.
Class "B" fire resistance - Fire-resistance rating that indicates roofing material is able to withstand moderate exposure to fire originating from sources outside the building.
Class "C" fire resistance - Fire-resistance rating that indicates roofing material is able to withstand light exposure to fire originating from sources outside the building.
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| Closed cut valley.
Roof shingles from one side of the valley extend across the valley, while shingles from the other side are trimmed 2 inches from the valley centerline. Thus, the valley flashing is not exposed.
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| Coal tar.
A viscous liquid mixture of hydrocarbon compounds, derived, along with coke, from the destructive distillation
of coal. It is used in weatherproofing applications
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| Coating A layer of viscous asphalt applied to the base material into which granules or other surfacing is embedded.
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| Cold process adhesive Mastic prepared with SBS modifiers to adhere laps, flashings and joints of built-up or low-slope roofing without hot-mopping or torching equipment.
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| Cold-method and lap cement Special multipurpose adhesive for low-sloped, cold-applied roof construction. Bonds 19" selvedge, mineral surface and cap sheets to the underlayment. Doubles as an adhesive on 2" selvedge lap of mineral-, granule- or smooth-surfaced roofing. Available in both summer and winter grades.
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| Collar Preformed flange placed over a vent pipe to seal the roofing above the vent pipe opening. Also called a vent sleeve.
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| Column An upright support
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| Concealed nail method Application of roll roofing in which all nails are driven into the underlying course of roofing and covered by a cemented, overlapping course. Nails are not exposed to the weather.
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| Concrete A common construction material often used for foundations, ground level floors, and sidewalks. Most concrete is made out of (1) Portland cement, (2) sand, and (3) gravel or aggregate. It is commonly reinforced with steel rods (rebar) or wire screening (mesh).
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| Concrete block A hollow concrete 'brick' often 8" x 8" x 16" in size. Often used in low rise commercial and some residential construction.
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| Concrete board or Wonderboard (tm) A panel made out of concrete and fiberglass usually used as a tile backing material.
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| Condensation The change of water from vapor to liquid when warm, moisture-laden air comes in contact with a cold surface.
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| Conduit, electrical A pipe, usually metal or plastic, through which wire is run.
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| Construction Contract A legal document that governs the work one or more prime contractors.. A construction contract generally includes:
ü An arbitration clause or other provision on how disputes are to be resolved.
ü A time including starting and completion dates for each phase or the entire job.
ü A contract price for the work, generally lump sum or time and materials.
ü Payment schedule.
ü Plans
ü Specifications
ü General and special conditions.
ü A written warranty
ü The contractor’s registration number.
ü Insurance requirements
ü Hold harmless agreements
ü Role of parties such as architect and construction manager.
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| Contractor A company licensed to perform certain types of construction activities. In most states, the generals contractor's license and some specialty contractor's licenses don't require of compliance with bonding, workmen's compensation and similar regulations. Some of the specialty contractor licenses involve extensive training, testing and/or insurance requirements. There are various types of contractors:
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| Coping joint The intersection of a roof slope and an exterior vertical wall.
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| Cornice Ornamental projection at the top of a building, wall, arch or window
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| Cost Plus Contract The contract price is based on the direct cost of labor and materials and the indirect costs together with overhead and profit.
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| Course A row of shingles or roll roofing running the length of the roof.
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| Coverage Amount of weather protection provided by the roofing material. Depends on number of layers of material between the exposed surface of the roofing and the deck; i.e. single coverage, double coverage, etc.
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| Crawl space A shallow space located below the living quarters of a basement less house, normally enclosed by the foundation wall.
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| Cricket A saddle-shaped, peaked construction connecting a sloping roof plane with a chimney. Designed to encourage water drainage away from the chimney joint.
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| Cross bridging Transverse rows of small diagnoal braces or struts set in pairs and crossing each other between the joists. | |
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| Cupola Small circular or polygonal dome on a roof or turret
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| Curb The short elevation of an exterior wall above the deck of a commercial flat roof.
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| Curb Roof A roof with an upper and lower set of rafters on each side, the under set being less inclined to the horizon than the upper; a mansard roof.
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| Curtain Drain A ditch sometimes filled with gravel and a drain tile that diverts storm and drain water away from a structure.
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| Cutout The open portions of a strip shingle between the tabs.
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