|
|
|
|
| Steel Metal and Waterproofing. |
|
| Providing continuous service to the NY Metro area, |
|
| for over 54 years! |
|
|
|
|
 |
| 54 YEAR, FAMILY OWNED, THIRD GENERATION |
|
|
|
|
|
|
| |
| Roofing Glossary |
|
|
| |
| C |
| |
Caulk – To fill a joint with mastic or asphalt cement to prevent leaks.
Cement – See Asphalt plastic roofing cement.
Chalk line – A line made on the roof by snapping a taut string or cord dusted with chalk. Used for alignment purposes.
Class "A" – The highest fire-resistance rating for roofing as per ASTM E-108. Indicates roofing is able to withstand severe exposure to fire originating from sources outside the building.
Class"B" – Fire-resistance rating that indicates roofing materials are able to withstand moderate exposure to fire originating from sources outside the building.
Class"C" – Fire-resistance rating that indicates roofing materials are able to withstand light exposure to fire originating from sources outside the building.
Closed cut valley – A method of valley treatment in which shingles from one side of the valley extend across the valley while shingles from the other side are trimmed two inches from the valley centerline. The valley flashing is not exposed.
Coating – A layer of viscous asphalt applied to the base material into which granules or other surfacing is embedded.
Collar – Pre-formed flange placed over a vent pipe to seal the roof around the vent pipe opening. Also called a vent sleeve.
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.
Condensation – The change of water from vapor to liquid when warm, moisture-laden air comes in contact with a cold surface.
Counter flashing – That portion of the flashing attached to a vertical surface to prevent water from migrating behind the base flashing.
Course – A row of shingles or roll roofing running the length of the roof.
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.
Cricket – A peaked saddle construction at the back of a chimney to prevent accumulation of snow and ice and to deflect water around the chimney.
Cutout – The open portions of a strip shingle between the tabs.
CALCIUM CHLORIDE – A chemical used to speed up curing of concrete during damp conditions.
CANOPY – An overhanging roof.
CANTILEVER – A projecting beam or other structure supported only at one end.
CANT STRIP – A beveled support used at the intersection of the roof deck with vertical surfaces so that bends in the roofing membrane to form base flashings can be made without breaking the felts.
CAP SHEETS – In roofing, one to four plies of felt bonded and top coated with bitumen that is laid over an existing roof as a treatment for defective roofs.
CAPE CHISEL – Tool used to clean out mortar joints on brick.
CARBIDE BIT – Tool used to drill holes in brick or block.
CAULK – (v) The application of sealant to a joint, crack or crevice. (n) A compound used for sealing that has minimum joint movement capability; sometimes called low performance sealant.
C/D CIRCUIT – A circuit where electricity flows in one direction only, at a constant rate.
CELLULOSE INSULATION – Ground up newspaper that is treated with a fire retardant.
CEMENT MIXTURES – Rich – 1 part cement, 2 parts sand, 3 parts coarse aggregate. Used for concrete roads and waterproof structures. Standard – 1 part cement, 2 parts sand, 4 parts coarse aggregate. Used for reinforced work floors, roofs, columns, arches, tanks, sewers, conduits, etc. Medium – 1 part cement, 2 1/2 parts sand, 5 parts coarse aggregate. Used for foundations, walls, abutments, piers, etc. Lean – 1 part cement, 3 parts sand, 6 parts coarse aggregate. Used for all mass concrete work, large foundations, backing for stone masonry, etc. Mixtures are always listed Cement to Sand to Aggregate
CEMENT TYPES – Type I Normal – is a general purpose cement suitable for practically all uses in residential construction but should not be used where it willbe in contact with high sulfate soils or be subject to excessive temperatures during curing. Type II Moderate is used where precaution against moderate sulfate attack is important, as in drainage structures where sulfate concentrations in groundwater's are higher than normal. Type III High Early Strength is used when high strengths are desired at very early periods, usually a week or less. It is used when it is desirable to remove forms as soon as possible or to put the concrete into service quickly. Type IV Low Heat is a special cement for use where the amount and rate of heat generated during curing must be kept to a minimum. The development of strength is slow and is intended in large masses of concrete such as dams. Type V Sulfate Resisting is a special cement intended for use only in construction exposed to severe sulfate action, such as western states having soils of high alkali content.
CERTIFICATE OF OCCUPANCY – A document stating that a building is approved for occupancy. The building authority issues the Certificate of Occupancy.
CFM (Cubic Feet per Minute) – The measure of volume of air. When testing systems, find the CFM by multiplying the face velocity times the free area in square feet. The face velocity is the amount of air passing through the face of an outlet or return. Free area is the total area of the openings in the outlet or inlet through which air can pass.
CHAIR RAIL – A molding that runs horizontally along the wall at about 3 feet from the ground. In storefront, window wall, or curtain wall systems, a chair rail is an aluminum extrusion applied horizontally to the inside of the system 3 feet from the floor to create a barrier in floor-to-ceiling glazing applications.
CHANNEL GLAZING – The installation of glass products into U-shaped glazing channels. The channels may have fixed stops; however, at least one glazing stop on one edge must be removable.
CHECKING – A pattern of surface cracks running in irregular lines. When found in the top pour of an asphalt built-up roof, checking is the preliminary stage of alligatoring.
CHEMICAL INJECTION GROUTING – Leak repair technique usually used below grade in cracks and joints in concrete walls and floors that involves injection of sealant (usually urethane) that reacts with water to form a seal.
CIRCUIT BREAKER – Simple switch-like device which automatically opens a circuit when the rated current is exceeded as in the case of a short circuit.
CLEAT – A wedge-shaped piece (usually of metal) which serves as a support or check. A strip fastened across something to give strength or hold something in position.
COAL TAR PITCH (Tar) – A bituminous material which is a by product from the coking of coal. It is used as the waterproofing material for tar and gravel built-up roofing.
COATING – A layer of any liquid product spread over a surface for protection.
COHESIVE FAILURE – Internal splitting of a compound resulting from over-stressing of the compound.
COLD APPLIED – Products that can be applied without heating. These are in contrast to products which need to be heated to be applied.
COLD PATCH – In roofing, a roof repair done with cold applied material.
COLLAR – In roofing, a conical metal cap flashing used in conjunction with vent pipes or stacks usually located several inches above the plane of the roof, for the purpose of shedding water away from the base of the vent.
COLLAR BEAM – In carpentry, a tie that keeps the roof from spreading. Connects similar rafters on opposite sides of roof.
COMPATIBLE – Two or more substances which can be mixed or blended without separating, reacting, or affecting either material adversely.
COMPONENT – Any one part of an assembly associated with construction.
COMPOSITE BOARD – An insulation board which has two different insulation types laminated together in 2 or 3 layers.
COMPOUND – A chemical formulation of ingredients used to produce a caulking, elastomeric joint sealant, etc.
COMPRESSION GASKET – A gasket designed to function under compression.
COMPRESSION SET – The permanent deformation of a material after removal of the compressive stress.
CONDENSATION – The appearance of moisture (water vapor) on the surface of an object caused by warm moist air coming into contact with a colder object.
CONDUCTOR – (1) In roofing, a pipe for conveying rain water from the roof gutter to a drain, or from a roof drain to the storm drain; also called a leader, downspout, or downpipe. (2) In electrical contracting, a wire through which a current of electricity flows, better known as an electric wire.
CONDUCTION – The flow of heat from one part of a substance to another part. A piece of iron with one end placed in a fire will soon become warm from end to end, from the transfer of heat by the actual collision of the air molecules.
CONDUIT – A tube for protecting electric wires.
CONSTRUCTION LOAN – A loan provided by a lending institution specifically to construct or renovate a building.
CONTROL JOINT – A control joint controls or accommodates movement in the surface component of a roof.
CONVECTION – A method of transferring heat by the actual movement of heated molecules, usually by a freestanding unit such as a furnace.
COOLING TOWER – A large device mounted on roofs, consisting of many baffles over which water is pumped in order to reduce its temperature.
COPING – A construction unit placed at the top of the parapet wall to serve as a cover for the wall.
COPPER PIPE TYPES – Type K has the heaviest or thickest wall and is generally used underground. It has a green stripe. (Kelly Green). Type L has a medium wall thickness and is most commonly used for water service and for general interior water piping. It has a blue stripe (Lavender Blue). Type M has a thin wall and many codes permit its use in general water piping installation. It has a red stripe. (Mad Red)
CORE – A small section cut from any material to show internal composition.
CORNICE – A horizontal projecting course on the exterior of a building, usually at the base of the parapet.
CORROSION – The deterioration of metal by chemical or electrochemical reaction resulting from exposure to weathering, moisture, chemicals or other agents or media.
CORRUGATED – Folded or shaped into parallel ridges or furrows so as to form a symmetrically wavy surface.
COST BREAKDOWN – A breakdowns of all the anticipated costs on a construction or renovation project.
COUPLING – In plumbing, a short collar with only inside threads at each end, for receiving the ends of two pipes which are to be fitted and joined together. A right/left coupling is one used to join 2 gas pipes in limited space.
COURSE – A single layer of brick or stone or other building material.Covenants – Rules usually developed by a builder or developer regarding the physical appearance of buildings in a particular geographic area. Typical covenants address building height, appropriate fencing and landscaping, and the type of exterior material (stucco, brick, stone, siding, etc) that may be used.
CRAWL SPACE – An open area between the floor of a building and the ground.
CRAZING – A series of hairline cracks in the surface of weathered materials, having a web-like appearance. Also, hairline cracks in pre-finished metals caused by bending or forming. (see brake metal)
CUPOLA – A small monitor or dome at the peak of a pitched roof.
CURB – A short wall or masonry built above the level of the roof that provides a means of flashing the deck equipment.
CURING – In concrete application, the process in which mortar and concrete harden. The length of time is dependent upon the type of cement, mix proportion, required strength, size and shape of the concrete section, weather and future exposure conditions. The period may be 3 weeks or longer for lean concrete mixtures used in structures such as dams or it may be only a few days for richer mixes. Favorable curing temperatures range from 50 to 70 degrees F. Design strength is achieved in 28 days.
CURING AGENT – One part of a multi-part sealant which, when added to the base, will cause the base to change its physical state by chemical reaction between the two parts.
CURTAIN WALL – A thin wall, supported by the structural steel or concrete frame of the building independent of the wall below. Also a metal (most often aluminum) framing system on the face of a building containing vision glass panels and spandrel panels made of glass, aluminum, or other material.
CUTBACK – In roofing, basic asphalt or tar which has been "cut back" with solvents and oils so that the material become fluid.
CUT OFF – A piece of roofing membrane consisting of one or more narrow plies of felt usually moped in hot to seal the edge of insulation at the end of a day's work.
CANOPY – An overhanging roof.
CANT STRIP – A beveled support used at the intersection of the roof deck with vertical surfaces so that bends in the roofing membrane to form base flashings can be made without breaking the felts.
CAP SHEETS – One to four plies of felt bonded and top coated with bitumen that is laid over an existing roof as a treatment for defective roofs.
CEMENT, ROOFING – A general term for a variety of trowelable mastics, asphalt or tar, which are used during roof construction and repair.
CHALK (ing) – The resulting dust which occurs on a surface that is susceptible to Ultra Violet degradation.
CHECKING – A pattern of surface cracks running in irregular lines. When found in the top pour of an asphalt built-up roof, is the preliminary stage of alligatoring.
CLEAT – A device made of formed sheet metal which is mechanically attached onto which the fascia flange of a metal edge is snapped, so as to protect against wind uplift.
COAL TAR PITCH (Tar) – A bituminous material which is a by product from the coking of coal. It is used as the waterproofing material for tar and gravel built-up roofing.
COATING – A layer of any brush consistency product spread over a surface for protection.
COLD APPLIED – Products that can be applied without heating. These are in contrast to tar or asphalt which need to be heated to be applied.
COLD PATCH – A roof repair done with cold applied material.
COLLAR – A conical metal cap flashing used in conjunction with vent pipes or stacks usually located several inches above the plane of the roof, for the purpose of shedding water away from the base of the vent.
COMPATIBLE – Two or more substances which can be mixed or blended without separating,reacting, or affecting either material adversely.
COMPONENT – Any one part of an assembly associated with construction.
COMPOSITE BOARD – An insulation board which has two different insulation types laminated together in 2 or 3 layers.
CONDUCTOR
A pipe for conveying rain water from the roof gutter to a drain, or from a roof drain to the storm drain; also called a leader, downspout, or downpipe.
COOLING TOWER – A large device mounted on roofs, consisting of many baffles over which water is pumped in order to reduce its temperature.
CORE – A small section cut from any material to show internal composition. The core was taken from the roof to verify the construction of the existing roof system. The deck is visable along with the insulation and the roof membrane (see construction section). The core was then replaced and repaired immediately with the appropriate mastic and fiberglas reinforcing mesh.
CORNICE – A horizontal projecting course on the exterior of a building, usually at the base of the parapet.
CORROSION – The deterioration of metal by chemical or electrochemical reaction resulting from exposure to weathering, moisture, chemicals or other agents or media.
CONTROL JOINT – A control joint controls or accommodates movement in the surface component of a roof.
COPING – A construction unit placed at the top of the parapet wall to serve as a cover for the wall.
CORRUGATED – Folded or shaped into parallel ridges or furrows so as to form a symmetrically wavy surface.
COURSE – A single layer of brick or stone or other building material.
CRAZING – A series of hairline cracks in the surface of weathered materials, having a web-like appearance.
CRICKET – The evaluation of a part of a roof surface as a means of promoting drainage of water from behind an obstacle such as chimney.
CUPOLA – A small monitor or dome at the peak of a pitched roof.
CURB – A short wall or masonry built above the level of the roof. It provides a means offlashing the deck equipment.
CUTBACK – Basic asphalt or tar which has been "cutback" with solvents and oils so that thematerial become fluid.
CUT OFF – A piece of roofing membrane consisting of one or more narrow plies of felt usuallymoped in hot to seal the edge of insulation at the end of a day's work. |
|
|
| Back to Top |
| |
|
 |
|
|
|
|
|
|
|
|
|
