Glossary of Roofing Terms

Asphalt Shingle

A shingle manufactured by coating a reinforcing material (felt or fibrous glass mat) with asphalt and having mineral granules on the side exposed to the weather.

Built-up Roof

A flat or low-sloped roof covered with layers of asphalt and roofing felt, then sealed with a layer of gravel.

Counter Flashing

The flashing that is embedded, or attached, and sealed at its top in a wall or other vertical structure and is lapped down over base flashing. Courses Horizontal rows of shingles or tiles.

Deck

The surface installed over the supporting framing members to which the roofing is applied.

Drip Edge

The strip of metal extending out beyond the eaves or rakes to prevent rainwater from curling around the shingles back into the wooden portion of the house.

Eaves

The lower edge of a roof (often overhanging beyond the edge of the house).

Felt

The bituminous paper used by roofers, usually made of a combination of asphalt and either paper or rags.

Flashing

Sheet metal or other material used at various planes on a roof to prevent water leakage

Rafter

Structural wood, usually slanted, to which sheathing is attached.

Rake

The slanting edge of a gable roof at the end wall of the house.

Re-Roofing

Installing a new roof system on a building that is not new.

Ridge

The horizontal line at the top edge of two sloping roof planes.

Rise

The vertical distance from the eaves line to the ridge.

Run

The horizontal distance from the eaves to a point directly under the ridge.

Sheathing

Boards that are nailed to the rafters and used as a roof deck material.

Shingle Flashing

Flashing that is laid in strips under each shingle and bent up at the edge of a chimney or wall.

Pitch (Slope)

A measurement of how "steep" a roof is; The number of inches of vertical rise in a roof per 12-inches of horizontal distance.

Soffit

The finished area that encloses the underside of the eaves.

Square

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

Underlayment

A layer of roofing felt or tar paper laid on top of sheathing before shingles are applied, providing additional protection.

tucson roofer for commercial and residential
Licensed, Bonded & Insured - L42-R0C195414