Term | Definition |
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Eaves |
The horizontal, lower edge of a sloped roof. |
Eaves flashing |
Additional layer of roofing material applied at the eaves to help prevent damage from water back-up. |
Edge venting |
The installation of a vent material along the roof edge (e.g., Starter Vent) as part of a ventilation system. Edge vent material should be used in conjunction with other venting material (e.g., ridge vent) as it not intended for use by itself. |
Edging strips |
Boards nailed along eaves and rakes after cutting back existing wood shingles to provide secure edges for re-roofing with asphalt shingles. |
Exposed nail method |
Application of roll roofing in which all nails are driven into the cemented, overlapping course of roofing. Nails are exposed to the weather. |
Exposure |
Portion of the shingle exposed to the weather. Exposure is measured from the butt of one shingle to the butt of the next. |
Fascia |
Horizontal trim at the eaves that covers the rafter ends. |
Feathering strips |
Tapered wood filler strips placed along the butts of old wood shingles to create a level surface when re-roofing over existing wood shingle roofs. Feathering strips are also called horse feathers. |
Felt |
A flexible sheet that is saturated with asphalt and used as an underlayment, sometimes called "tar paper" |
Fiber-cement |
A roofing material that has cellulose (wood fiber) mixed into it. Cellulose absorbs water and can add greatly to the roof's weight, while reducing its longevity. |
Fiberglass mat |
An asphalt roofing base material manufactured from glass fibers. |
Flashing |
Pieces of metal or roll roofing used to prevent seepage of water into a building around any intersection or projection in a roof such as vent pipes, chimneys, adjoining walls, dormers and valleys. Galvanized metal flashing should be minimum 26-gauge. There are 4 main types of flashing used in residential roofing systems:
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Flashing cement |
An asphalt-based cement used to bond roofing materials. Flashing cement is also known as mastic. |
Free-tab shingles |
Shingles that do not contain factory-applied strips or spots of self-sealing adhesive. |
Gable |
The upper portion of a sidewall that comes to a triangular point at the ridge of a sloping roof. |