- A-frameAn architectural house style featuring steeply-angled sides (roofline) that usually begin at or near the foundation line, and meet at the top in the shape of the letter A. An A-frame ceiling can be open to the top rafters.
- AAAA not-for-profit organization in the field of alternative dispute resolution, providing services to individuals and organizations who wish to resolve conflicts out of court, and one of several arbitration organizations that administers arbitration proceedings.<
- AluminumA non-rusting metal sometimes used for metal roofing and flashing.
- American Arbitration AssociationA not-for-profit organization in the field of alternative dispute resolution, providing services to individuals and organizations who wish to resolve conflicts out of court, and one of several arbitration organizations that administers arbitration proceedings.<
- Apron FlashingMetal flashing used at chimney fronts.
- Architectural ShingleShingle that provides a dimensional appearance.
- ARMAAsphalt Roofing Manufacturers Association. Organization of roofing manufacturers.
- Asian traditional styleChinese architecture refers to a style of architecture that has taken shape in East Asia over many centuries. The structural principles of Chinese architecture have remained largely unchanged, the main changes being only the decorative details. Since the Tang Dynasty, Chinese architecture has(...)
- AsphaltA bituminous waterproofing agent used in various types of roofing materials.
- ASTMThe American Society for Testing and Materials. Organization that sets standards for a wide variety of materials, including roofing.
- Blow-OffsWhen shingles are subjected to high winds, and are forced off a roof deck.
- BOMABuilding Owners & Managers Association
- Bonnet roofA reversed gambrel or Mansard roof with the lower portion at a lower pitch than the upper portion.
- BrakeHand or power activated machinery used to form metal.
- BucklingWhen a wrinkle or ripple affects shingles or their underlayments.
- Building CodePublished regulations and ordinances established by a recognized agency prescribing design loads, procedures, and construction details for structures. Usually applying to designated jurisdictions (city, county, state, etc.). Building codes control design, construction, and quality of(...)
- BundleAn individual package of shakes or shingles.
- Butt JointA joint formed by adjacent, separate sections of material, such as where two neighboring pieces of insulation abut.
- Butterfly roofA V-shaped roof resembling an open book. A kink separates the roof into two parts running towards each other at an obtuse angle.
- Button PunchA process of indenting two or more thicknesses of metal that are pressed against each other to prevent slippage between the metal.
- CamberA slight convex curve of a surface, such as in a prestressed concrete deck.
- Canadian Arbitration AssociationDedicated to assisting the legal and business communities, both nationally and internationally, to resolve disputes in an expeditious and cost-effective manner.
- CanopyAny overhanging or projecting roof structure, typically over entrances or doors. Sometimes the extreme end is unsupported.
- Cap FlashingUsually composed of metal, used to cover or shield the upper edges of the membrane base flashing, wall flashing, or primary flashing.
- Capillary ActionThe action that causes movement of liquids by surface tension when in contact with two adjacent surfaces such as panel side laps.
- Caulking(1) the physical process of sealing a joint or juncture; (2) sealing and making weather-tight the joints, seams, or voids between adjacent units by filling with a sealant.
- CCF100 cubic feet.
- ChalkA powdery residue on the surface of a material.
- Chalk LineA line made on the roof by snapping a taut string or cord dusted with colored chalk. Used for alignment purposes.
- ChalkingThe degradation or migration of an ingredient, in paints, coatings, or other materials.
- ChimneyStone, masonry, prefabricated metal, or a wood framed structure, containing one or more flues, projecting through and above the roof.
- CladdingA material used as the exterior wall enclosure of a building.
- CleatA metal strip, plate or metal angle piece, either continuous or individual (“clip”), used to secure two or more components together.
- Closed Cut ValleyA shingle valley installation method where one roof plane’s shingles completely cover the others. The top layer is cut to match the valley lines.
- Counter FlashingThe metal material that is installed over roof-top base flashing systems.
- CricketsA peaked water diverter installed behind chimneys and other large roof projections. Effectively diverts water around projections.
- Cross gabledThe result of joining two or more gabled roof sections together, forming a T or L shape for the simplest forms, or any number of more complex shapes.
- Cross hippedThe result of joining two or more hip roof sections together, forming a T or L shape for the simplest forms, or any number of more complex shapes.
- DeckThe substrate over which roofing is applied. Usually plywood, wood boards, or planks.
- DormerA raised roof extending out of a larger roof plane.
- Drip EdgeAn installed lip that keeps shingles up off the deck at edges, and extends shingles out over eaves and gutters.
- Dutch gableA hybrid of hipped and gable with the gable at the top and hipped lower down; i.e. the opposite arrangement to the half-hipped roof.
- East Asian hip-and-gable roofA hip roof that slopes down on all four sides and integrates a gable on two opposing sides.
- End LapsWhen installing rolled products in roofing, the area where a roll ends on a roof, and is overlapped by the next section of rolled material.
- EWAEngineered Wood Association. Tests and sets standards for all varieties of plywood used in the U.S.
- ExposureThe area on any roofing material that is left exposed to the elements.
- FastenersNails or screws used to secure roofing to the deck.
- FHAThe Federal Housing Authority sets construction standards throughout the U.S.
- FlashingMaterials used to waterproof a roof around any projections
- Florida Energy Systems ConsortiumThe Florida Energy Systems Consortium (FESC) was created by the Florida State government to promote collaboration among the energy experts at its 11 supported universities to share energy-related expertise. The consortium assists the state in the development and implementation of an(...)
- GableA simple roof design shaped like an inverted V.
- GambrelA roof similar to a mansard but sloped in one direction rather than both.
- GranulesCrushed rock that is coated with a ceramic coating and fired, used as top surface on shingles.
- Half-hippedA hybrid of a gable and a hipped roof.
- Helm roofA pyramidal roof with gable ends; often found on church towers.
- Hidden roofA type of Japanese roof construction.
- HipA hipped roof is sloped in two pairs of directions (e.g. N-S and E-W) compared to the one pair of direction (e.g. N-S or E-W) for a gable roof.
- Hip LegsThe down-slope ridges on hip roofs.
- Hip RoofA roof with four roof planes coming together at a peak and four separate hip legs.
- Ice DamWhen a snow load melts on a roof and re-freezes at the eave areas. Ice dams force water to "back-up" under shingles and cause leakage.
- KarahafuA type of gable found in some traditional Japanese buildings.
- L FlashingContinuous metal flashing consisting of several feet of metal. Used at horizontal walls, bent to resemble an "L".
- Low SlopesRoof pitches less than 4:12 are considered low sloped roofs. Special installation practices must be used on roofs sloped 2:12-4:12. Shingles can not be installed at slopes less than 2/12.
- MansardA roof with the pitch divided into a shallow slope above a steeper slope. The steep slope may be curved. An element of the Second Empire architectural style (Mansard style) in the U.S.
- Modified bitumenRolled roofing membrane with polymer modified asphalt and either polyester or fiberglass reinforcement.
- MokoshiA Japanese decorative pent roof
- Monitor roofA roof with a monitor; 'a raised structure running part or all of the way along the ridge of a double-pitched roof, with its own roof running parallel with the main roof.
- Mono-pitched roofA roof with one slope, historically attached to a taller wall.
- MRAMetal Roofing Alliance.
- NRCAThe National Roofing Contractors Association. Respected national organization of roofing contractors.
- Oak Ridge National LaboratoryA multiprogram science and technology national laboratory managed for the United States Department of Energy (DOE) by UT-Battelle. ORNL is the largest science and energy national laboratory in the Department of Energy system by acreage. ORNL is located in Oak Ridge, Tennessee, near Knoxville.(...)
- Open ValleyValley installation using metal down the valley center.
- OSBOriented Strand Board. A decking made from wood chips and lamination glues.
- OutshotA pitched extension of a main roof similar to a lean-to but an extension of the upper roof.
- PyatthatA multi-tiered and spired roof commonly found in Burmese royal and Buddhist architecture.
- Pyramid roofA hip roof on a square building.
- Rake EdgeThe vertical edge of gable style roof planes.
- Roof LouversRooftop rectangular shaped roof vents.
- Roof PlaneA roofing area defined by having four separate edges. One side of a gable, hip or mansard roof.
- SaltboxA gable roof with one side longer than the other, and thus closer to the ground unless the pitch on one side is altered.
- Saw-toothA roof comprising a series of mono-pitched roofs with vertical surfaces glazed and facing away from the equator. The sloping surfaces are opaque, shielding the workers and machinery from direct sunlight. This sort of roof admits natural light into a factory, and is also known as "Northlight"(...)
- Shed RoofRoof design of a single roof plane. Area does not tie into any other roofs.
- Side WallsWhere a vertical roof plane meets a vertical wall. The sides of dormers etc.
- Soffit VentilationIntake ventilation installed under the eaves, or at the roof edge.
- Starter StripThe first course of roofing installed. Usually trimmed from main roof material.
- Steep-Slope RoofingGenerally all slopes higher than 4/12 are considered steep slopes.
- StepflashingMetal flashing pieces installed at sidewalls and chimneys for weatherproofing.
- Tear-OffRemoval of existing roofing materials down to the roof deck.
- TentedA type of polygonal hipped roof with steeply pitched slopes rising to a peak.
- TerraceA flat roof with a balustrade, used as a living space.
- TransitionsWhen a roof plane ties into another roof plane that has a different pitch or slope.
- UnderlaymentsAsphalt-based rolled materials designed to be installed under main roofing material to serve as added protection.
- Urban Heat Island EffectAn urban heat island (UHI) is a metropolitan area that is significantly warmer than its surrounding rural areas due to human activities.
- ValleysArea where two adjoining sloped roof planes intersect on a roof creating a "V" shaped depression.
- VaporTerm used to describe moisture laden air.
- Warm WallThe finished wall inside of a structure, used in roofing to determine how far up the deck to install waterproof underlayments at eaves.