Rafter tail rot is wood decay at the ends of the rafters that overhang your walls to form the eaves. It almost always starts with water reaching unprotected end grain: gutters that overflow, a missing or short drip edge, or peeling paint. Caught early it's a modest repair; left alone it can weaken the roof edge.
Seeing soft wood, sagging gutters or paint bubbling at the eaves? Call Cannon Roofing at (940) 627-1045 — we're available 24/7 — or ask for a free inspection through our contact page.
How water reaches the rafter tails
Rafter tails are protected on top by the roof deck and shingles, on the outside by fascia board, and underneath by soffit. Rot sets in when one of those layers lets water in and it can't dry out.
Gutter overflow
Clogged or undersized gutters spill over the back edge during heavy rain. That water runs straight down the fascia and soaks into the rafter ends behind it. Loose gutters pulled away from the house do the same thing.
Missing or failed drip edge
Drip edge is the bent metal strip along the roof edge that directs water off the shingles and into the gutter. Without it, water curls back under the shingles and wicks into the top of the fascia and deck edge. Our explainer on drip edge and roof edges shows where it belongs.
Paint and exposed tails
Some older North Texas homes have exposed rafter tails as a design feature. Once paint cracks on the end grain, every rain soaks in and Texas humidity keeps it damp.
Roof leaks at the eave
Damaged shingles or a failing valley near the edge can drip onto the tails from above, where you'll never see it from the ground. Because the soffit hides that area, this kind of leak can run for several seasons before the fascia finally softens enough to notice.
Signs of rafter tail rot to look for
- Fascia that's soft, cracked, bowed or pulling away at the corners.
- Gutters that sag in one spot or won't stay fastened.
- Peeling paint, dark staining or mushroom-like growth at the eaves.
- A wavy or dipping roofline when you sight along the edge.
- Holes where birds, squirrels or insects have moved into soft wood.
How the damage is assessed
A proper assessment looks at more than the board you can see. Fascia often hides rot in the rafter ends behind it.
Probing the wood
We press an awl or screwdriver into the fascia and tails. Wood that's firm with shallow surface softness is a different job from wood where the tool sinks in easily.
Opening up the edge
Pulling a section of gutter or soffit lets us see the tails directly and check how far back the decay runs toward the wall.
Checking from the attic
From inside, we look at the deck edge and the rafters over the wall plate for staining, softness or daylight.
How far the rot runs decides the fix
Surface rot on the end grain is one thing. Rot that runs back toward the wall line, or a roofline that visibly sags, means structural repair is needed before any trim goes back on.
How rafter tail repairs tie into the roof edge
Fixing the wood is only half the job. If the water source isn't corrected, new wood will rot the same way.
Repairing the tails
Depending on the damage, soft surface wood may be consolidated, or rotted ends cut back and new lumber fastened alongside the sound part of the rafter, often called sistering. Badly damaged deck boards at the edge are replaced too.
Replacing fascia and soffit
New fascia gives the gutters a solid mount, and new soffit closes the eave while keeping the intake vents open for attic airflow.
Drip edge and gutters
Drip edge goes on so water clears the fascia and lands in the gutter. Gutters are sized, pitched and fastened to carry the water away, with downspouts that discharge away from the foundation. Our gutters, soffit and fascia service covers that whole edge, and our article on fascia repair with gutter replacement explains why the two are often done together.
Timing: repair now or with a new roof?
Rafter tail and deck-edge repairs are easiest when the shingles are already off, so if your roof is near the end of its life, doing both together makes sense. If the roof has plenty of years left, the edge can be opened and repaired on its own. Either way, don't wait if gutters are pulling loose or the edge is sagging.
Cannon Roofing has worked on Wise County homes since 1994. Every employee holds the Technician Seal of Safety — background checked, drug tested, factory trained and insured — and we'll show you photos of what we find behind the fascia before any work is agreed.
Frequently asked questions
Can I just replace the fascia board?
Only if the rafter tails behind it are sound. Nailing new fascia to rotted tails leaves nothing solid to hold it or the gutters, and the rot keeps spreading.
What causes rafter tail rot most often?
Water spilling over or behind gutters, and a missing or poorly installed drip edge. Both put water on the end grain of the wood again and again.
Is rafter tail rot covered by homeowner's insurance?
Policies usually treat slow rot from long-term moisture as a maintenance issue rather than sudden damage. Check your policy, and ask your agent if a specific storm caused the problem.
Worried about soft wood along your eaves? Call Cannon Roofing at (940) 627-1045 — we answer around the clock. We'll inspect the gutters, fascia and roof edge, show you what's behind the trim, and give you a clear written estimate. You can also contact us through our contact page.