Click on colorful terms to see a picture. Some terms, such as various methods, will not have pictures.

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SaturantAsphalt used to impregnate an organic felt base material.

Saturated FeltAn asphalt-impregnated felt used as an underlayment between the deck and the roofing material.

SawteethThe exposed section of double thickness on some shingles, also called dragon’s teeth. Shaped to imitate a wood shake look on the roof.

Self-Sealant or Self-Sealing Cement: A thermal-sealing tab cement built into the shingle to firmly cement the shingles together automatically after they have been applied properly and exposed to warm sun temperatures. In warm seasons, the seal will be complete in a matter of days. In colder seasons, sealing time depends on the temperature and amount of direct sunlight hitting the shingles. Hand sealing with cement should be done to ensure sealing in winter.

Self-Sealing Shingles: Shingles containing factory-applied strips or spots of self-sealing adhesive.

Self-Sealing Strip or SpotFactory-applied adhesive that bonds shingle courses together when exposed to the heat of the sun after application.

SelvageThe non-exposed area on rolled roofing. Area without granules. Designed for nail placement and sealant.

ShadingSlight differences in shingle color that may occur as a result of normal manufacturing operations.

SheathingExterior-grade boards used as a roof deck material.

Shed RoofA roof containing only one sloping plane. Has no hips, ridges, valleys, or gables.

Side LapsThe area on roll material where one roll overlaps the rolled material beneath it. Also called selvage edge on rolled roofing.

Side WallsWhere a vertical roof plane meets a vertical wall. The sides of dormers, etc.

Single Coverage: Asphalt roofing that provides one layer of roofing material over the deck.

SlopeThe degree of roof incline expressed as the ratio of the rise, in feet, to the span, in feet.

Smooth-Surfaced RoofingRoll roofing that is covered with ground talc or mica instead of granules (coated).

SoffitThe finished underside of the eaves.

Soffit VentilationIntake ventilation installed under the eaves, or at the roof edge.

Soil StackA vent pipe that penetrates the roof.

SpanThe horizontal distance from eaves to eaves.

Specialty Eaves Flashing MembraneA self-adhering, waterproofing shingle underlayment designed to protect against water infiltration due to ice dams or wind-driven rain.

Square: A unit of roof measure covering 100 square feet.

Square-Tab ShinglesShingles on which tabs are all the same size and exposure.

Starter StripAsphalt roofing applied at the eaves that provides protection by filling in the spaces under the cutouts and joints of the first course of shingles.

Steep-Slope ApplicationMethod of installing asphalt shingles on roof slopes greater than 21 inches per foot (Mansard).

Step FlashingFlashing application method used where a vertical surface meets a sloping roof plane.

Strip ShinglesA single-layer shingle commonly known as a three-tab shingle because it has three tabs.


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