Ask homeowners “where does a roof leak start?” and 90% will say “shingles.” They’re wrong. In South Florida, the overwhelming majority of roof failures start at the eaves — that band where the roof meets the gutter — and specifically at three components most homeowners don’t know the names of: drip edge, fascia, and soffit.
Here’s what each one is, how to spot early failure, and what real fixes cost.
Drip edge: the metal strip you’ve never noticed
What it is: An L-shaped piece of metal (typically aluminum or galvanized steel) that runs along the edge of your roof, between the underlayment and the gutter. About 3 inches tall x 2 inches deep. Bent at 90 degrees with a small kick at the bottom.
What it does: Forces water to drip past the fascia board into the gutter, instead of wicking back under the shingles where the roof meets the wall. Without drip edge, capillary action pulls water back upslope into the soffit and decking.
How it fails: Older homes (pre-2000) often have no drip edge at all — it wasn’t required by code until 2010 (national) and 2017 (Florida). Newer homes have drip edge but it’s often undersized or poorly nailed.
Florida Building Code 2023 (R903.4.1) now requires drip edge at all eaves and rakes on every re-roof, no exceptions.
Visible failure signs:
- Dark staining on the underside of the soffit near the eave
- Wood rot at the top of the fascia board
- Paint peeling on the fascia from the inside out
- Water stains on the ceiling near exterior walls (the leak path: roof edge → wall cavity → ceiling)
Fix cost: $1.50–$3.00 per linear foot if done during a re-roof (essentially included). Standalone retrofit: $4–$8 per linear foot because it requires lifting the bottom row of shingles.
Fascia: the rotting board behind your gutter
What it is: The vertical board that runs along the edge of your roof, behind the gutter. Typically 1x6 or 1x8 wood (in older homes) or aluminum (in newer / upgraded homes). Connects the soffit (horizontal underside) to the roof edge.
What it does: Provides a mounting surface for gutters and gives the roof its finished edge. Closes the gap between rafters at the eave.
How it fails: Wood fascia in South Florida is constantly wet (gutters overflow, drip edge is missing, condensation pools). Wood absorbs water; over years, it rots. Once the rot reaches the gutter mounting screws, the gutter starts pulling away from the house.
Visible failure signs:
- Soft spots in the fascia (push it with your finger — it should feel solid like furniture wood)
- Visible water stains, dark patches, or moss/mildew on the fascia surface
- Gutters separating from the house
- Vertical paint peeling on the fascia
- Visible bulging or warping in the fascia line when viewed from the street
Fix cost: $8–$15 per linear foot to replace with aluminum (best long-term fix). $4–$8 per linear foot to replace with treated wood (cheaper, will rot again in 12–18 years). For a typical home with 200 linear feet of perimeter eave, that’s $1,600–$3,000 for aluminum.
Soffit: the underside that traps moisture
What it is: The horizontal underside of your roof overhang. The panel between the bottom of the fascia and the exterior wall. Typically aluminum perforated panels (vented) or solid aluminum (unvented).
What it does: Closes off the underside of the roof overhang. The vented version is the intake for your attic ventilation system — cool outside air enters through soffit vents, rises through the attic, and exits through ridge or off-ridge vents at the peak.
How it fails: Older soffit was wood (T1-11 plywood or beadboard). Wood soffit absorbs moisture from the air below and from any roof leaks above. Eventually it warps, cracks, and falls down in patches. Even aluminum soffit can corrode if salt air is severe (true within 1 mile of the coast).
Visible failure signs:
- Sagging soffit panels
- Holes in the soffit (where pests have chewed through rotted wood)
- Daylight visible through soffit gaps when looking up from the ground
- Water stains on the soffit surface
- Squirrels, palm rats, or wasps observed entering the attic from the eaves
Fix cost: $7–$13 per linear foot for vented aluminum soffit replacement. For a typical home with 200 linear feet of perimeter eave, that’s $1,400–$2,600.
Why all three usually fail together
The eave system is interconnected. When drip edge fails, water reaches fascia. When fascia rots, water reaches soffit. When soffit fails, water enters the attic. The progression takes 5–10 years and is usually invisible from the ground until structural damage starts.
The cost difference between fixing all three together vs sequentially:
- All three at once during a re-roof: $5,000–$8,000 added to the roof project
- All three sequentially over 5 years standalone: $9,000–$13,000 in mobilization fees, separate permits, and disruption
The economically rational answer is to bundle all three at re-roof time.
How to spot early failure on your own
Walk around your house with binoculars (or a phone camera with zoom). Look at:
- Eave line: Is it straight? Or does it sag in places between roof rafters?
- Fascia paint: Is it peeling? Are there dark vertical streaks?
- Soffit: Are the panels flush? Any gaps, holes, or bulges?
- Gutter: Is it pulling away from the fascia? Does any section angle differently from the rest?
- Roof edge: Can you see the drip edge? It should be a thin metal strip visible just above where the gutter meets the fascia.
If you see two or more of these issues, schedule an inspection. Early intervention is cheap. Letting it progress to interior wall damage is expensive.
What we do during a free inspection
When we inspect a roof, we don’t just walk the field — we walk every linear foot of eave with a moisture meter and a flashlight. We document:
- Drip edge presence and condition
- Fascia rot probe results (we test wood firmness with a pick)
- Soffit ventilation calculation
- Pest entry points
- Gutter alignment + downspout outlet condition
You get a written report with photos. Even if you don’t move forward with us, you get the truth about your roof’s eaves. Schedule yours.