Powell Ohio Metal RoofReplacement

A.
Absorption: the ability of a material to accept within its body amounts of gases or fluid, such as dampness.
Accelerated Weathering: the process in which products are subjected to a regulated atmosphere where different exposures such as warm, water, condensation, or light are become multiply their results, consequently speeding up the weathering process. The product's physical homes are measured hereafter procedure as well as compared to the initial homes of the unexposed material, or to the properties of the product that has actually been subjected to natural weathering.
Adhere: to trigger 2 surface areas to be held together by attachment, usually with asphalt or roofing concretes in built-up roofing and with call cements in some single-ply membrane layers.
Aggregate: rock, rock, crushed stone, smashed slag, water-worn crushed rock or marble chips utilized for appearing and/or ballasting a roof system.
Aging: the impact on products that are subjected to a setting for an interval of time.
Alligatoring: the splitting of the surfacing bitumen on a built-up roof, generating a pattern of cracks similar to an alligator's hide; the fractures might or may not expand through the emerging bitumen.
Light weight aluminum: a non-rusting steel occasionally utilized for steel roofing as well as blinking.
Ambient Temperature level: the temperature of the air; air temperature level.
Application Rate: the amount (mass, quantity, or thickness) of material used each area.
Apron Flashing: a term used for a flashing located at the point of the top of the sloped roof and also a vertical wall or steeper-sloped roof.
Architectural Roof shingles: shingle that supplies a dimensional look.
Asphalt: a dark brown or black material located in a natural state or, much more frequently, left as a residue after vaporizing or otherwise refining petroleum or oil.
Asphalt Solution: a mixture of asphalt fragments and an emulsifying agent such as bentonite clay as well as water. These elements are integrated by using a chemical or a clay emulsifying agent as well as mixing or blending machinery.
Asphalt Felt: an asphalt-saturated and/or an asphalt-coated felt. (See Felt.).
Asphalt Roof Cement: a trowelable mix of solvent-based bitumen, mineral stabilizers, other fibers and/or fillers. Classified by ASTM Requirement D 2822-91 Asphalt Roof Cement, as well as D 4586-92 Asphalt Roof Cement, Asbestos-Free, Types I and II.
Attic: the cavity or open room over the ceiling and also immediately under the roof deck of a steep-sloped roof.
B.
Back-Nailing: (additionally described as Blind-Nailing) the method of nailing the back portion of a roofing ply, high roofing device, or various other parts in a fashion to ensure that the bolts are covered by the next consecutive ply, or course, as well as are not revealed to the weather condition in the ended up roof system.
Ballast: an anchoring material, such as aggregate, or precast concrete pavers, which use the force of gravity to hold (or aid in holding) single-ply roof membranes in place.
Barrel Vault: a structure account featuring a spherical profile to the roof on the brief axis, yet with no angle change on a cut along the long axis.
Base Flashing (membrane layer base blinking): plies or strips of roof membrane layer material made use of to close-off and/or seal a roof at the roof-to-vertical crossways, such as at a roof-to-wall juncture. Membrane base flashing covers the side of the area membrane. (Additionally see Flashing.).
Base Ply: the lowermost ply of roofing in a roof membrane layer or roof system.
Base Sheet: an impregnated, filled, or coated really felt placed as the initial ply in some multi-ply built-up as well as changed bitumen roof membrane layers.
Batten: (1) cap or cover; (2) in a metal roof: a steel closure established over, or covering the joint between, surrounding metal panels; (3) timber: a strip of wood normally set in or over the structural deck, made use of to raise and/or affix a primary roof covering such as ceramic tile; (4) in a membrane layer roof system: a narrow plastic, wood, or steel bar which is used to secure or hold the roof membrane layer and/or base flashing in place.
Batten Joint: a metal panel profile connected to as well as formed around a beveled timber or steel batten.
Bitumen: (1) a course of amorphous, black or dark colored, (strong, semi-solid, or thick) cementitious sub-stances, all-natural or made, composed mainly of high molecular weight hydrocarbons, soluble in carbon disulfide, and discovered in petroleum asphalts, coal tars as well as pitches, timber tars and asphalts; (2) a generic term utilized to represent any material composed principally of bitumen, typically asphalt or coal tar.
Blackberry (sometimes referred to as Blueberry or Tar-Boil): a little bubble or sore in the flooding layer of an aggregate-surfaced built-up roof membrane.
Blind-Nailing: using nails that are not revealed to the climate in the ended up roofing system.
Blister: an enclosed pocket of air, which may be mixed with water or solvent vapor, trapped in between imper-meable layers of really felt or membrane layer, or in between the membrane layer as well as substrate.
Barring: areas of timber (which might be preservative dealt with) developed right into a roof setting up, typically attached above the deck and listed below the membrane or blinking, made use of to tense the deck around an opening, work as a quit for insulation, support a visual, or to function as a nailer for attachment of the membrane and/or blinking.
BOMA: Building Owners & Managers Association.
Brake: hand- or power-activated equipment made use of to develop metal.
British Thermal Unit (BTU): the heat required to raise the temperature of one extra pound of water one degree Fahrenheit (joule).
Brooming: an action carried out to promote embedment of a ply of roofing product into hot bitumen by using a broom, squeegee, or special apply to smooth out the ply and make sure contact with the asphalt or adhe-sive under the ply.
Distort: an upward, elongated tenting displacement of a roof membrane often happening over insulation or deck joints. A buckle might be an indication of movement within the roof setting up.
Building Code: released policies and regulations established by an acknowledged firm recommending design tons, procedures, as well as building information for structures. Generally applying to designated jurisdictions (city, region, state, and so on). Building ordinance control layout, construction, and also high quality of materials, usage and also occupancy, area and upkeep of structures and frameworks within the location for which the code has actually been embraced.
Built-Up Roof Membrane Layer (BUR): a continual, semi-flexible multi-ply roof membrane, containing plies or layers of saturated he said felts, coated felts, materials, or floor coverings in between which alternate layers of asphalt are used. Normally, built-up roof membrane layers are emerged with mineral aggregate and also bitumen, a liquid-applied coat-ing, or a granule-surfaced cap sheet.
Bundle: a specific plan of drinks or shingles.
Butt Joint: a joint formed by adjacent, separate areas of material, such as where 2 neighboring pieces of insulation abut.
Switch Punch: a procedure of caving in 2 or more densities of metal that are pressed against each various other to prevent slippage between the metal.
Butyl: rubber-like material produced by copolymerizing isobutylene with a percentage of isoprene. Butyl might be made in sheets, or combined with various other elastomeric products to make sealers and also adhesives.
Butyl Coating: an elastomeric covering system derived from polymerized isobutylene. Butyl finishes are char-acterized check it out by low tide vapor leaks in the structure.
Butyl Rubber: a synthetic elastomer based on isobutylene and a minor quantity useful source of isoprene. It is vulcanizable and also includes reduced leaks in the structure to gases as well as water vapor.
Butyl Tape: a sealant tape in some cases used between steel roof panel joints as well as end laps; also made use of to secure other sorts of sheet steel joints, and in various sealant applications.
C.
Camber: a small convex curve of a surface area, such as in a prestressed concrete deck.
Cover: any type of overhanging or predicting roof framework, usually over entrances or doors. Sometimes the extreme end is unsupported.
Cant: a beveling of foam at an ideal angle joint for strength and also water run.
Cant Strip: a beveled or triangular-shaped strip of timber, wood fiber, perlite, or various other product made to work as a gradual transitional aircraft in between the horizontal surface area of a roof deck or stiff insulation and an upright surface.
Cap Flashing: typically made up of metal, used to cover or protect the upper sides of the membrane layer base flashing, wall blinking, or main flashing. (See Flashing and also Coping.).
Cap Sheet: a granule-surface layered sheet utilized as the leading ply of some built-up or customized bitumen roof membrane layers and/or blinking.
Blood vessel Activity: the action that triggers activity of fluids by surface tension when in contact with two surrounding surfaces such as panel side laps.
Caulking: (1) the physical process of securing a joint or juncture; (2) sealing and also making weather-tight the joints, seams, or spaces in between adjacent devices by filling with a sealer.
Dental caries Wall: a wall surface built or prepared to offer an air space within the wall (with or without protecting product), in which the internal as well as outer products are tied together by architectural framing.
CCF: 100 cubic feet.
Chalk: a grainy deposit on the surface of a material.
Chalk Line: a line made on the roof by snapping a tight string or cable cleaned with tinted chalk. Used for alignment purposes.
Liquid chalking: the destruction or migration of an ingredient, in paints, finishes, or various other products.
Smokeshaft: rock, stonework, erected metal, or a wood framed structure, consisting of several flues, forecasting through as well as over the roof.
Cladding: a product made use of as the outside wall surface room of a structure.
Cleat: a steel strip, plate or metal angle piece, either continuous or individual (" clip"), utilized to protect 2 or more elements together.
Closed-Cut Valley: a method of valley application in which shingles from one side of the valley extend across the valley while shingles from the other side are trimmed approximately 2 inches (51mm) from the site web valley centerline.
Closure Strip: a steel or durable strip, such as neoprene foam, utilized to close openings produced by joining metal panels or sheets and also flashings.
Coal Tar: a dark brownish to black colored, semi-solid hydrocarbon obtained as residue from the partial evapo-ration or purification of coal tars. Coal tar pitch is additional fine-tuned to comply with the following roofing grade specifications:.
Coal Tar Bitumen: a proprietary brand name for Type III coal tar made use of as the dampproofing or waterproof-ing representative in dead-level or low-slope built-up roof membranes, adapting ASTM D 450, Type III.
Coal Tar Pitch: a coal tar made use of as the waterproofing representative in dead-level or low-slope built-up roof mem-branes, complying with ASTM Specification D 450, Kind I or Type III.
Coal Tar Waterproofing Pitch: a coal tar made use of as the dampproofing or waterproofing agent in below-grade structures, adapting ASTM Specification D 450, Kind II.
Covered Base Sheet: a felt that has actually previously been filled (loaded or fertilized) with asphalt and also later on coated with more difficult, a lot more viscous asphalt, which substantially boosts its impermeability to moisture.
Covered Fabric: materials that have been fertilized and/or covered with a plastic-like material in the type of a service, diffusion hot-melt, or powder. The term also relates to materials arising from the application of a preformed movie to a textile by means of calendering.
Covered Felt (Sheet): (1) an asphalt-saturated really felt that has likewise been covered on both sides with more difficult, a lot more viscous "finish" asphalt; (2) a glass fiber really felt that has been at the same time impregnated and also coated with asphalt on both sides.
Finishing: a layer of material spread over a surface area for protection or design. Coatings for SPF are usually liquids, semi-liquids, or mastics; spray, roller, or brush applied; and also healed to an elastomeric consistency.
Cohesion: the degree of interior bonding of one material to itself.
Cold Refine Built-Up Roof: a continuous, semi-flexible roof membrane, including a ply or plies of felts, mats or various other support textiles that are laminated flooring along with alternate layers of liquid-applied (typically asphalt-solvent based) roof seals or adhesives set up at ambient or a slightly raised temperature level.
Combustible: efficient in burning.
Suitable Materials: two or more substances that can be mixed, mixed, or affixed without dividing, reacting, or influencing the materials detrimentally.
Make-up Tile: a device of asphalt roof shingles roofing.
Concealed-Nail Approach: a technique of asphalt roll roofing application in which all nails are driven right into the underlying training course of roofing and also covered by an adhered, overlapping training course.
Condensation: the conversion of water vapor or various other gas to liquid state as the temperature drops or atmos-pheric stress surges. (Also see Dew Point.).
Conductor Head: a transition component in between a through-wall scupper and also downspout to accumulate as well as direct run-off water.
Contact Seals: adhesives made use of to adhere or bond various roofing parts. These adhesives stick mated elements right away on contact of surface areas to which the adhesive has actually been applied.
Contamination: the process of making a material or surface area unclean or unsuited for its desired function, special info generally by the enhancement or attachment of unfavorable foreign materials.
Coping: the covering piece on top of a wall surface which is exposed to the climate, usually constructed from steel, masonry, or rock. It is preferably sloped to lose water back onto the roof.
Copper: a natural weathering steel utilized in steel roofing; normally used in 16 or 20 ounce per square foot density (4.87 or 6.10 kg/sq m).
Cornice: the ornamental straight molding or predicted roof overhang.
Counterflashing: created metal sheeting protected on or right into a wall, aesthetic, pipe, roof device, or other surface area, to cover as well as secure the top edge of the membrane layer base blinking or underlying metal blinking as well as linked fasteners from direct exposure to the weather.
Training course: (1) the term made use of for each row of shingles of roofing product that develops the roofing, waterproofing, or blinking system; (2) one layer of a collection of materials put on a surface (e.g., a five-course wall blinking is composed of three applications of roof concrete with one ply of felt or material sandwiched in between each layer of roof concrete).
Coverage: the area covered by a details amount of a particular product.
Cricket: a raised roof substrate or structure, built to divert water around a chimney, visual, far from a wall surface, growth joint, or various other projection/penetration. (See Saddle.).
Cross Air flow: the result that is provided when air relocations with a roof tooth cavity in between the vents.
Cupola: a reasonably tiny roofed framework, usually established on the ridge or peak of a main roof area.
Curb: (1) a raised participant utilized to support roof infiltrations, such as skylights, mechanical devices, hatches, and so on above the level of the roof surface; (2) an increased roof boundary relatively low in elevation.
Treatment: a procedure wherein a product is created to create irreversible molecular linkages by exposure to chemicals, heat, stress, and/or weathering.
Cure Time: the time called for to result healing. The time required for a product to reach its preferable lasting physical features.
Cutoff: a permanent information created to secure as well as stop side water movement in an insulation system, and made use of to separate sections of a roofing system. (Note: A cutoff is various from a tie-off, which might be a momentary or long-term seal.) (See Tie-Off.).
Cutout: the open sections of a strip roof shingles between the tabs.