Click on colorful terms to see a picture. Some terms, such as various methods, will not have pictures.
Saturant: Asphalt used to impregnate an organic felt base material.
Saturated Felt: An asphalt-impregnated felt used as an underlayment between the deck and the roofing material.
Sawteeth: The 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 Spot: Factory-applied adhesive that bonds shingle courses together when exposed to the heat of the sun after application.
Selvage: The non-exposed area on rolled roofing. Area without granules. Designed for nail placement and sealant.
Shading: Slight differences in shingle color that may occur as a result of normal manufacturing operations.
Sheathing: Exterior-grade boards used as a roof deck material.
Shed Roof: A roof containing only one sloping plane. Has no hips, ridges, valleys, or gables.
Side Laps: The area on roll material where one roll overlaps the rolled material beneath it. Also called selvage edge on rolled roofing.
Side Walls: Where 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.
Slope: The degree of roof incline expressed as the ratio of the rise, in feet, to the span, in feet.
Smooth-Surfaced Roofing: Roll roofing that is covered with ground talc or mica instead of granules (coated).
Soffit: The finished underside of the eaves.
Soffit Ventilation: Intake ventilation installed under the eaves, or at the roof edge.
Soil Stack: A vent pipe that penetrates the roof.
Span: The horizontal distance from eaves to eaves.
Specialty Eaves Flashing Membrane: A 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 Shingles: Shingles on which tabs are all the same size and exposure.
Starter Strip: Asphalt 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 Application: Method of installing asphalt shingles on roof slopes greater than 21 inches per foot (Mansard).
Step Flashing: Flashing application method used where a vertical surface meets a sloping roof plane.
Strip Shingles: A single-layer shingle commonly known as a three-tab shingle because it has three tabs.