Roofing can be full of unfamiliar terms. Understanding the basics helps you communicate better with contractors, spot potential issues, and protect your investment.
Roofing Terms and Definitions
- Asphalt Shingles: The most common roofing material in North America, made of fiberglass and asphalt.
- Decking (Sheathing): The wooden base of your roof that supports shingles-usually made of plywood or OSB.
- Drip Edge: Metal flashing installed along the roof edges to direct water away from the fascia and into the gutters.
- Eaves: The edges of the roof that overhang the walls of your home.
- Fascia: A board running along the edge of the roof, typically where gutters are attached.
- Flashing: Thin metal used around chimneys, skylights, and roof valleys to prevent leaks.
- Gable: The triangular upper portion of a wall at the end of a ridged roof.
- Hip: The external angle where two roof slopes meet.
- Ice & Water Shield: A waterproof underlayment installed in vulnerable areas like valleys and eaves.
- Ridge: The highest horizontal line where two roof planes meet.
- Ridge Vent: A vent installed at the roof's peak to allow hot, moist air to escape from the attic.
- Soffit: The underside of the roof overhang that connects the wall to the eave. It often contains vents.
- Underlayment: A water-resistant layer installed under shingles to provide an extra barrier against moisture.
- Valley: The internal angle where two roof slopes meet. Water flows here, so it needs strong waterproofing.
- Vent Stack: A pipe that vents sewer gases from the home-typically exits through the roof.
Why It Matters
Understanding roofing terms empowers you to ask smart questions, compare quotes accurately, and avoid being taken advantage of. It's especially helpful during inspections or when planning a roof replacement.
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