TPO
Thermoplastic polyolefin, a single-ply membrane commonly used on low-slope roofs.
Ridge Vent
A ventilation outlet installed along the roof ridge that allows warm, moist attic air to escape when paired with intake ventilation.
Metal Roofing
A roofing system using metal panels, shingles, or tiles, installed with system-specific fasteners and flashing.
Ice Dam
A ridge of ice that forms near a roof edge and can hold melting water behind it.
Hip Roof
A roof with slopes on all sides that meet at hips instead of having vertical gable ends.
Gable
The triangular upper section of a wall under the end of a pitched roof.
Fascia
The vertical board or trim at the roof edge, often behind the gutters.
Eave
The lower edge of a roof that extends beyond an exterior wall.
Drip Edge
A metal edging installed at roof edges to guide water away from the fascia and into the gutter system.
Counterflashing
Flashing that covers or protects base flashing where a roof meets a wall, chimney, or other vertical surface.