Steep-slope Roofing Terms
Learn about common steep-slope roofing terminology that can help you talk to roofing contractors!
When you work with a roofer, it can be helpful to understand the basic terms used by roofers and in the roofing industry. Having this knowledge allows homeowners, business owners and property managers to ask their contractors more specific roofing questions.
Check out this video from John Kenney, one of AskARoofer's resident experts and the president of Cotney Consulting Group! In it, he shares some basic information about roofing that you might find helpful!
Steep-slope roofs have a pitch greater than 3:12 slope. These are most commonly found in residential areas and can also be called pitched roofs.
They can be made of a variety of materials, including asphalt shingles, wood shakes or shingles, metal systems, clay or concrete tiles. In addition to these types of materials, steep-slope roofs require five main roofing products: the roof system, underlayment, fastenings, flashings and decking/sheathing.
Below, we have collected some of the common terms that are used when talking about steep-slope roofs. This is a great list to reference as you talk with roofing contractors when you have roof problems or need roof maintenance.
3-tab shingle: A single-layer asphalt shingle separated by cut-outs into three tabs.
Architectural shingle: An asphalt shingle made up of multiple layers, also known as dimensional or laminated shingles.
Attic vent: An opening that allows air, heat and water vapor to escape from the attic to help prevent damage to roofing materials.
Bundle: A package of shingles.
Cricket: A structure designed to divert water on a roof around the high side of chimneys and other large roof projections.
Decking or sheathing: The structural material such as plywood, boards, planks or other structural sheathings over which roofing is installed.
Dormer: A small, raised roof area, usually with a vertical window that projects from a sloping roof and usually illuminates a bedroom.
Drip edge: A trim metal piece is installed at the roof's edge to keep shingles off the deck, extending them out over eaves and gutters.
Eave: The edge of a roof that overhangs the perimeter wall.
Fascia: The trim around the perimeter of a building, just under the roofing. Wood is most common in residential construction.
Flashing: Material installed around a roof penetration or along an edge to help keep moisture from entering the layers below. Found along the roof's perimeter or at penetrations, walls, expansion joints, valleys, drains, and other vertical areas of a roofing system.
Gable roof: A traditional roof design consisting of two sections whose upper horizontal edges meet to form its ridge.
Hip roof: A type of roof where all four sides slope downwards to the walls.
Penetration: Any constructed item going through the roofing system that requires flashing.
Ridge cap shingles: Material specifically made to cover the peak ridge or hips of the roof.
Roof ridge vent: A gap that is cut into the wood deck at the highest point on the roof to allow air flow from the inside to the outside of the attic through a manufactures prefabricated air exhaust vent.
Roofing felt or underlayment: A material installed on top of the roof decking to protect the structure beneath the roof system and typically made of asphalt-saturated paper or synthetic materials.
Slope: The roof steepness of the structure that is expressed as a ratio. For example, a 6:12 slope means a 6" vertical rise for every 12" horizontal length.
Soffit: The underside exposed area of a roof eave or overhang.
Solar roofing: Solar panels that are installed or integrated into a roofing system.
Square: A roof area measurement equal to 100 square feet.
Starter strip: The first row of shingle roofing that is installed at the edge of the eave of the structure.
Tab: The bottom portion of a shingle, where the shingle cut-outs separate the material.
Valley: Where two downward-sloping roof sections join, creating a "V" shaped channel for diverting water.
Vapor retarder: A vapor-resistant material or membrane that reduces the rate at which water vapor can move through a material installed in a separate layer during roofing installation.
Warranty: A legal document from the roofing manufacturer or contractor to cover any issues with your new roof. There are three main types:
- A standard manufacturer's warranty covers the products you purchase.
- An extended manufacturer's warranty covers contractor workmanship along with expanded coverage for the products.
- A workmanship warranty from the contractor covers the installation, usually for one or two years.
Learn more about steep-slope roofs.
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