What are soffit and fascia, and how do you install them?
Short answer. Fascia is the vertical board along the roof edge, fastened to the rafter tails, that the gutters attach to; soffit is the horizontal panel under the overhang that closes it in and often supplies intake air to the attic. They are installed together: framing and fascia first, then soffit panels, then fascia wrap, drip edge, and gutters.
What each part does
- Fascia: caps the rafter ends, supports the drip edge at the roof edge, and carries the gutters. Rot here can loosen gutters.
- Soffit: protects the rafter tails and attic from weather and animals, and its vents let air into the attic.
- Drip edge: metal flashing at the roof edge that directs water into the gutter instead of behind it onto the fascia.
Installation order
- Framing: repair or install rafter tails, sub fascia, and lookouts for a level soffit.
- Fascia board: straight, primed lumber fastened to the rafter tails.
- Soffit channels and panels: J-channel or F-channel at the wall and fascia, with panels cut slightly short for expansion and vented panels where the attic needs intake.
- Fascia wrap: aluminum coil bent to cover the fascia and lap over the soffit edge, or paint for wood.
- Drip edge and roofing: installed with the roof so water clears the fascia.
- Gutters: hung on the fascia with proper slope to the downspouts.
What they cost
Prices depend on linear feet, material, height, and rot repairs. Small repairs are often a few hundred dollars, while whole house soffit and fascia jobs usually run into the thousands.
Common problems
In Georgia, the usual failures are fascia rot from overflowing gutters or missing drip edge, sagging vinyl soffit, painted over vents, and squirrels chewing in at corners. See roof anatomy explained and drip edge explained.