Worthington Metal RoofRepair

A.
Absorption: the capability of a material to approve within its body quantities of gases or liquid, such as dampness.
Accelerated Weathering: the process in which materials are subjected to a controlled environment where numerous direct exposures such as warmth, water, condensation, or light are become multiply their impacts, thus speeding up the weathering procedure. The product's physical residential or commercial properties are measured after this procedure and also compared to the initial homes of the unexposed material, or to the buildings of the product that has actually been subjected to natural weathering.
Adhere: to cause 2 surface areas to be held with each other by adhesion, typically with asphalt or roofing cements in built-up roofing as well as with get in touch with concretes in some single-ply membranes.
Aggregate: rock, rock, crushed stone, smashed slag, water-worn gravel or marble chips used for surfacing and/or ballasting a roof system.
Aging: the effect on products that are subjected to an environment for an interval of time.
Alligatoring: the cracking of the surfacing asphalt on a built-up roof, creating a pattern of fractures similar to an alligator's conceal; the fractures may or might not extend via the surfacing asphalt.
Aluminum: a non-rusting metal in some cases utilized for metal roofing as well as flashing.
Ambient Temperature level: the temperature level of the air; air temperature.
Application Price: the amount (mass, volume, or thickness) of product applied per unit area.
Apron Flashing: a term utilized for a blinking situated at the juncture of the top of the sloped roof and an upright wall or steeper-sloped roof.
Building Shingle: roof shingles that provides a dimensional appearance.
Asphalt: a dark brownish or black compound located in an all-natural state or, extra frequently, left as a deposit after vaporizing or otherwise processing crude oil or petroleum.
Asphalt Solution: a combination of asphalt bits as well as an emulsifying agent such as bentonite clay and also water. These parts are combined by using a chemical or a clay emulsifying representative and also blending or blending equipment.
Asphalt Felt: an asphalt-saturated and/or an asphalt-coated really felt. (See Really Felt.).
Asphalt Roof Cement: a trowelable mixture of solvent-based asphalt, mineral stabilizers, other fibers and/or fillers. Classified by ASTM Criterion D 2822-91 Asphalt Roof Cement, and also D 4586-92 Asphalt Roof Concrete, Asbestos-Free, Kind I and also II.
Attic: the cavity or open room over the ceiling as well as instantly under the roof deck of a steep-sloped roof.
B.
Back-Nailing: (also referred to as Blind-Nailing) the technique of toenailing the back section of a roofing ply, high roofing unit, or other parts in a fashion to make sure that the bolts are covered by the following consecutive ply, or training course, as well as are not revealed to the weather condition in the ended up roof system.
Ballast: a securing product, such as accumulation, or precast concrete pavers, which use the force of gravity to hold (or help in holding) single-ply roof membranes in place.
Barrel Vault: a building profile including a rounded profile to the roof on the brief axis, however without any angle modification on a cut along the lengthy axis.
Base Flashing (membrane base flashing): plies or strips of roof membrane material utilized to close-off and/or seal a roof at the roof-to-vertical junctions, such as at a roof-to-wall point. Membrane layer base flashing covers the side of the field membrane. (Additionally see Flashing.).
Base Ply: the lowermost ply of roofing in a roof membrane or roof system.
Base Sheet: a fertilized, saturated, or layered really felt placed as the initial ply in some multi-ply built-up as well as modified asphalt roof membranes.
Batten: (1) cap or cover; (2) in a metal roof: a steel closure set over, or covering the joint in between, adjacent steel panels; (3) wood: a strip of timber typically set in or over the architectural deck, utilized to boost and/or connect a main roof covering such as floor tile; (4) in a membrane roof system: a slim plastic, wood, or metal bar which is utilized to fasten or hold the roof membrane layer and/or base blinking in place.
Batten Joint: a metal panel profile affixed to and developed around a diagonal wood or steel batten.
Asphalt: (1) a class of amorphous, black or dark colored, (strong, semi-solid, or thick) cementitious sub-stances, all-natural or manufactured, composed mainly of high molecular weight hydrocarbons, soluble in carbon disulfide, and discovered in oil asphalts, coal tars and also pitches, wood tars as well as asphalts; (2) a common term utilized to denote any type of product made up principally of bitumen, usually asphalt or coal tar.
Blackberry (sometimes referred to as Blueberry or Tar-Boil): a little bubble or sore in the flooding covering of an aggregate-surfaced built-up roof membrane layer.
Blind-Nailing: using nails that are not exposed to the climate in the finished roofing system.
Blister: an encased pocket of air, which might be blended with water or solvent vapor, trapped between imper-meable layers of felt or membrane, or between the membrane as well as substratum.
Blocking: sections of wood (which may be preservative treated) developed into a roof assembly, typically connected above the deck as well as below the membrane or flashing, made use of to stiffen the deck around an opening, work as a stop for insulation, sustain an aesthetic, or to act as a nailer for add-on of the membrane layer and/or blinking.
BOMA: Structure Owners & Managers Association.
Brake: hand- or power-activated machinery used to form metal.
British Thermal Unit (BTU): the heat needed to increase the temperature of one extra pound of water one level Fahrenheit (joule).
Brooming: an action executed to promote embedment of a ply of roofing product right into hot bitumen by using a broom, squeegee, or unique carry out to ravel the ply and make sure call with the bitumen or adhe-sive under the ply.
Buckle: an up, extended tenting displacement of a roof membrane layer regularly taking place over insulation or deck joints. A buckle might be an indication of motion within the roof assembly.
Building ordinance: released policies and also ordinances developed by an identified company suggesting design lots, procedures, as well as building information for frameworks. Usually putting on designated jurisdictions (city, area, state, etc.). Building ordinance control style, construction, as well as top quality of products, use and occupancy, place and maintenance of structures and also structures within the area for which the code has been taken on.
Built-Up Roof Membrane Layer (BUR): a continuous, semi-flexible multi-ply roof membrane, including plies or layers of saturated felts, covered felts, textiles, or mats between which alternating layers of asphalt are used. Normally, built-up roof membrane layers are appeared with mineral aggregate and 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 nearby, separate sections of material, such as where two surrounding pieces of insulation abut.
Button Punch: a procedure of indenting two or even more densities of metal that are pushed versus each other to prevent slippage in between the steel.
Butyl: rubber-like material produced by copolymerizing you could check here isobutylene with a percentage of isoprene. Butyl might be made in sheets, or blended with other elastomeric materials to make sealers and also adhesives.
Butyl Finish: an elastomeric layer system stemmed from polymerized isobutylene. Butyl layers are char-acterized by low tide vapor leaks in the structure.
Butyl Rubber: a synthetic elastomer based on isobutylene as well as a small amount of isoprene. It is vulcanizable and includes low permeability to gases and also water vapor.
Butyl Tape: a sealer tape in some cases used in between metal roof panel seams and also end laps; also made use of to seal other sorts of sheet steel joints, and in numerous sealer applications.
C.
Camber: a mild convex curve of a surface area, such as in a prestressed concrete deck.
Canopy: any type of overhanging or projecting roof framework, generally over entries or doors. Often the extreme end is in need of support.
Cant: a beveling of foam at a best angle joint for toughness and water escape.
Cant Strip: a beveled or triangular-shaped strip of timber, wood fiber, perlite, or other product developed to act as a progressive transitional plane in between the horizontal surface area of a roof deck or stiff insulation and also an upright surface area.
Cap Flashing: usually made up of steel, made use of to cover or protect the top sides of the membrane base flashing, wall surface blinking, or main blinking. (See Flashing and also Coping.).
Cap Sheet: a granule-surface layered sheet utilized as the top ply of some built-up or modified asphalt roof membranes and/or blinking.
Blood vessel Action: the action that causes activity of fluids by surface tension when touching two surrounding surface areas such as panel side laps.
Caulking: (1) the physical procedure of securing a joint or time; (2) sealing and also making weather-tight the joints, joints, or spaces between adjacent units by full of a sealer.
Cavity Wall surface: a wall built or prepared to supply an air room within the wall surface (with or without shielding material), in which the internal and also external products are tied together by structural framing.
CCF: 100 cubic feet.
Chalk: a powdery residue externally of a material.
Chalk Line: a line made on the roof by breaking a taut string or cable cleaned with colored chalk. Made use of for positioning purposes.
Liquid chalking: the degradation or movement of a component, in paints, finishes, or other products.
Smokeshaft: rock, stonework, upreared steel, or a timber mounted structure, containing one or more flues, forecasting through and also above the roof.
Cladding: a material used as the exterior wall surface unit of a structure.
Cleat: a steel strip, plate or metal angle piece, either continual or individual (" clip"), made use of to protect two or even more elements with each other.
Closed-Cut Valley: an approach of valley application in which shingles from one side of the valley prolong across the valley while shingles from the opposite are trimmed back around 2 inches (51mm) from the valley centerline.
Closure Strip: a metal or resilient strip, such as neoprene foam, utilized to close openings produced by signing up with steel panels or sheets and flashings.
Coal Tar: a dark brown to black colored, semi-solid hydrocarbon obtained as residue from the partial evapo-ration or distillation of coal tars. Coal tar pitch is additional improved to adapt the complying with roofing quality specs:.
Coal Tar Bitumen: a proprietary trade name for Type III coal tar used as the dampproofing or waterproof-ing agent in dead-level or low-slope built-up roof membranes, complying with ASTM D 450, Kind 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, adapting ASTM Spec D 450, Type I or Kind III.
Coal Tar Waterproofing Pitch: a coal tar used as the Recommended Reading dampproofing or waterproofing agent in below-grade frameworks, conforming to ASTM Specification D 450, Type II.
Layered Base Sheet: a really felt that has actually previously been saturated (filled up or impregnated) with asphalt as well as later covered with more challenging, a lot more thick asphalt, which significantly raises its impermeability to moisture.
Coated Textile: textiles that have been impregnated and/or covered with a plastic-like product in the type of a remedy, diffusion hot-melt, or powder. The term likewise puts on materials resulting from the application of a preformed movie to a material using calendering.
Coated Felt (Sheet): (1) an asphalt-saturated really felt that has actually also been coated on both sides with more challenging, a lot more viscous "finish" asphalt; (2) a glass fiber really felt that has actually been all at once fertilized as well as covered with asphalt on both sides.
Finishing: a layer of material spread over a surface area for protection or decoration. Coatings for SPF are usually liquids, semi-liquids, or mastics; spray, roller, or brush used; and healed to an elastomeric consistency.
Communication: the level of interior bonding of one compound to itself.
Cold Refine Built-Up Roof: a constant, semi-flexible roof membrane layer, consisting of a ply or plies of felts, floor coverings or other support materials that are laminated along with alternate layers of liquid-applied (typically asphalt-solvent based) roof seals or adhesives mounted at visit this page ambient or a slightly elevated temperature.
Combustible: efficient in burning.
Compatible Materials: two or even more compounds that can be blended, mixed, or connected without separating, reacting, or affecting the materials adversely.
Composition Roof shingles: an unit of asphalt shingle roofing.
Concealed-Nail Approach: an approach of asphalt roll roofing application in which all nails are driven into the underlying course of roofing and covered by an adhered, overlapping training course.
Condensation: the conversion of water vapor or various other gas to liquid state as the temperature goes down or atmos-pheric stress rises. (Also see Dew Point.).
Conductor Head: a change part between a through-wall scupper and downspout to gather and direct run-off water.
Call Seals: adhesives used to stick or bond different roofing components. These adhesives stick mated parts immediately on contact of surface areas to which the adhesive has actually been applied.
Contamination: the process of making a material or surface dirty or inadequate for its intended purpose, generally by the addition or attachment of unwanted foreign materials.
Coping: the covering item in addition to a wall surface which is subjected to the weather condition, typically made of steel, stonework, or rock. It is preferably sloped to shed water back onto the roof.
Copper: an all-natural weathering steel used in metal roofing; typically made use of in 16 or 20 ounce per square foot density (4.87 or 6.10 kg/sq m).
Cornice: the attractive horizontal molding or projected roof overhang.
Counterflashing: developed metal sheeting protected on or into a wall, curb, pipe, rooftop unit, or various other surface, to cover and also click over here secure the upper side of the membrane base blinking or underlying metal blinking as well as linked bolts from exposure to the weather condition.
Course: (1) the term made use of for every row of shingles of roofing product that develops the roofing, waterproofing, or blinking system; (2) one layer of a collection of products put on a surface (e.g., a five-course wall flashing is made up of three applications of roof concrete with one ply of felt or textile sandwiched in between each layer of roof cement).
Protection: the surface area covered by a certain amount of a specific product.
Cricket: an elevated roof substrate or framework, built to divert water around a chimney, aesthetic, far from a wall, growth joint, or other projection/penetration. (See Saddle.).
Cross Air flow: the impact that is provided when air actions with a roof cavity in between the vents.
Cupola: a relatively tiny roofed structure, normally set on the ridge or optimal of a primary roof location.
Curb: (1) an elevated participant made use of to sustain roof infiltrations, such as skylights, mechanical equipment, hatches, and so on over the degree of the roof surface area; (2) a raised roof perimeter reasonably reduced in elevation.
Cure: a process where a material is caused to develop long-term molecular linkages by direct exposure to chemicals, warmth, pressure, and/or weathering.
Heal Time: the moment needed to impact healing. The moment required for a product to browse around here reach its preferable long-term physical qualities.
Cutoff: an irreversible detail developed to seal as well as avoid side water movement in an insulation system, and made use of to separate sections of a roof. (Note: A cutoff is various from a tie-off, which might be a short-term or irreversible seal.) (See Tie-Off.).
Intermediary: the open sections of a strip shingle between the tabs.