Roofing Terminology

Asphalt: A coating agent put on top materials throughout manufacturing.

Asphalt plastic top cement: An asphalt-based sealant used with bond top materials. Additionally well-known as flashing concrete, roof coat, bull or mastic.

Back surfacing: Granular information put on the back side of shingles with keep them from sticking throughout delivery and space.

Base flashing: That part of the flashing attached with or resting found on the deck with direct the flow of water on the roof.

Built-up roof: Multiple sheets of asphalt and ply sheets bonded together.

Butt edge: The bottom edgeof the shingle dividers.

Caulk: To fill a joint with avoid leaking.

Closed valley: The valley flashing is covered by shingles.

Coating: A layer of viscous asphalt put on the outer roof surface with safeguard the roof membrane.

Collar: Pre-formed flange placed over a release decorate with close the roof about the release decorate starting. Additionally called a release sleeve.

Concealed nail method: Application of roll top in which all nails are covered by a cemented, overlapping program.

Counter flashing: That part of the flashing attached with a upright surface above the airplane of the roof with avoid water from moving behind the base flashing.

Course: Row of shingles that will run horizontally, diagonally or vertically.

Cricket: A peaked water diverter installed at the back of the chimney with avoid buildup of snow and frost and to deflect water.

Deck: The top surfaceof which a roof experience applied, surface installed over the supporting framing members.

Double coverage: Asphalt top whose lapped part is at least two inches wider than the exposed part, producing two sheets of building material over the deck.

Downspout: A decorate for draining water from roof gutters with empty. Additionally called a leader.

Drip edge: L-shaped flashing used on the eaves and rakes with enable water run-off into the gutters and to drip obvious of fundamental construction.

Eave: The element of the roof that overhangs or extends outward and is not directly over the outdoor walls or the buildings indoor.

Exposed nail method: Application of roll top where nails are powered into the overlapping span of top. Nails experience the elements.

Fascia: A hardwood trim deck used with conceal the cut finishes of the roof's rafters and sheathing.

Felt: Fibrous information used because an underlayment or sheathing paper, describes roll top materials.

Flashing: Pieces of steel or roll top used with shape water close about release pipes, chimneys, adjoining walls, dormers and valleys.

Gable: The end of a outdoor wall that comes to a triangular aim at the ridge of the sloping roof.

Granules: Ceramic-coated and fired crushed rock that is applied because the top surface of asphalt top treatments.

Gutter: The trough that channels water within the eaves with the downspouts. Usually attached with the fascia.

Head lap: An overlapping of shingles or top felt at their upper edge.

Hip: The flip or upright ridge created by the set of two sloping roof airplanes. Runs within the ridge with the eaves.

Ice dam: Condition creating water back-up at the eave areas by the thawing and re-freezing of melted snow found on the overhang. Can force water under shingles, causing leaking.

Interlockingshingles: Individual shingles that mechanically fasten to one another with offer wind resistance.

Laminated shingles: Strip shingles made from two separate pieces laminated together with create extra density. Additionally called three-dimensional and architectural shingles.

Lap: Surface where one shingle or roll overlaps with another throughout the application form task.

Mansard roof: A shape with a nearly upright roof airplane linked with a roof airplane of less slope at its peak. Contains no gables.

Mineral stabilizers: Finely ground limestone, slate, traprock or additional inert materials added to asphalt coatings for toughness and increased resistance with fire and weathering.

Nesting: A approach to reroofing, installing a 2nd layer of unique asphalt shingles, in which the top edge of the unique shingle is butted resistant to the bottom edge of the existing shingle loss.

Pitch: The amount of roof incline indicated because the ratio of the rise, in feet, with the span, in feet.

Low Slope - Roof pitches that are lower than 26 degrees.

Normal Slope - Roof pitches that are between 26 and 45 degrees.

Steep Slope - Roof pitches that are far more than 45 degrees.

Rafter: The supporting framing that makes upwards the roof structure; instantly beneath the deck; the roof sheathing is nailed with the rafters.

Rake: The inclined edge of the sloped roof over a wall within the eave with the ridge. They is close or extended.

Ridge: The horizontal exterior position created by the set of two sloping sides of the roof at the highest aim of the roof, stylish or dormer.

Run: The horizontal distance involving the eaves along with a aim directly inside the given ridge; or half the span.

Selvage: That part of roll top overlapped by the application form of the roof covering to get double coverage.

Sheathing: Exterior level panels used because a roof deck information.

Shed roof: A single roof airplane without hips, ridges, valleys or gables, not linked with any other roofs.

Slope: The amount of roof incline indicated because the ratio of the rise, in inches, with the run, in feet.

Smooth-surfaced roofing: Roll top that is covered with ground talc or mica rather of granules (coated).

Soffit: The completed bottom of the eaves that extends within the fascia with the exterior and hides the lower of a overhang.

Soil stack: A release decorate that penetrates the roof.

Span: The horizontal distance from eaves with eaves.

Specialty eaves flashing membrane: A self-adhering, coating shingle underlayment designed with safeguard against water infiltration due with frost dams or wind powered rain.

Starter strip: Asphalt top applied at the eaves because the 1st span of shingles installed.

Tab: The weather exposed surface of strip shingles involving the cutouts.

Telegraphing: Shingles installed over an uneven surface that show distortion.

Truss - A combination of beams, pubs and connections, commonly in triangular units with shape a framework for help in wide span roof construction.

UL label: Label displayed on material with indicate the level of fire and/or wind resistance of asphalt top.

Underlayment: A layer of asphalt based rolled materials installed under key building material before shingles are installed with offer additional protection for the deck.

Valley: The internal position created by the set of two inclined roof surfaces with offer water overflow.

Vapor barrier/retarder: Whatever information that prevents the passing of water or water vapour by it.

Vent: Whatever device installed found on the roof because an store for air with ventilate the underside of the roof deck.

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