Resources
Roofing Dictionary
When you need to discuss your roof with your contractor, it helps to understand some of the terminology commonly used in the business. Here are roofing terms you'll find handy to know.
Know Your Roof
Common Roofing Terms
Here's a short overview of what a roofer looks at when inspecting your roof.
Architectural Shingles
Also called dimensional or laminated shingles, these are made from fiberglass and asphalt, then laminated or textured for an attractive 3D look.
Decking
The plywood that covers the roof's wooden frame. Also called sheathing.
Felt
Paper-like material used as a protective layer on top of the decking and under the shingles. Often impregnated with asphalt for additional water protection.
Flashing
Usually made of metal and used to prevent leaks around roof elements like pipes, chimneys, dormers, and valleys.
Eave
A roof edge that overhangs the exterior wall of the home or building.
Drip Edge
Flashing usually made of steel that goes along eaves at a 90-degree angle to direct rainwater runoff into the roof gutters.
Rafter
Individual pieces of wood that make up the roof's frame. Rafters support the decking and extend from the peak down to the exterior walls.
Soffit
The finished underside of the eaves, or roof overhang.
Fascia
Often called "the boards behind the roof gutters," this vertical trim is found just under the roof where it covers the rafter tails at the eaves.
Leak Barrier
A self-adhering and self-sealing material applied to the roof's deck to protect it from severe rainstorms.
Roof Ventilation
A system for removing hot air and moisture from the attic area. Can be power-driven or static, and is critically important for maintaining comfortable interior temperatures.
Valley
The internal angle formed where two sloping roof planes meet. Valleys channel water runoff and require careful flashing to prevent leaks.
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