Valley flashing
Metal in the valley where two slopes meet, carrying a lot of water. Wear shows as rust or a worn channel. Valleys are a common repair on older multi-plane roofs.
Serving Warren County
Roof Flashing Repair in Washington at Valleys, Walls and Dormers
How flashing fails at valleys, walls and dormers on older multi-plane roofs, and how a roofer repairs or rebuilds it.
- Roof repair and full replacement
- Ice dams, leaks and storm damage
- Connected to an independent local roofer
Get a fast quote
Fastest: call (833) 751-2102. Or send this and we call you back.
Flashing
Flashing Repair: what it covers
Quick answer
Flashing is the thin metal that seals the joints where a roof meets a wall, a valley, a dormer or a vent. It is a common failure point on older roofs. Washington Roofing connects you with an independent local roofer who resets, replaces or rebuilds flashing, usually after tracing a leak back to it.
The shingle field of a roof sheds water by overlap, and it does so reliably for years. The trouble comes at the joints. Where two planes meet in a valley, where a roof butts against a wall, where a dormer rises from a slope or a pipe pokes through, water is forced to the side or held in a pocket, and the only thing standing between it and the house is a strip of metal and a bead of sealant.
Older houses collect these joints. A farmhouse with a kitchen addition, a village house with a porch roof and a dormer, or a Victorian with several gables can have a dozen places where flashing was installed in different decades, by different people, with different materials. In ZIP 07882, 1,572 of 6,233 housing units date from 1939 or earlier, per a Census-based profile, so multi-plane roofs with a long history are common.
Washington Roofing is a call line that connects you with an independent local roofer, who does the work. Call (833) 751-2102 and say where the stain appears and what is next to it, whether a chimney, a wall or a dormer. The roofer arranges the visit and explains the repair.
- Service area
- Washington & Warren County
- Availability
- Call to reach a local roofer
- Phone
- (833) 751-2102
Warning signs
Signs you need flashing repair
Do not climb up to caulk a joint yourself. Sealant over wet or dirty metal does not hold, and a fall from a ladder at a wall or dormer is a real danger.
- Stains on an upstairs ceiling or wall near a roof junction
- Rust, lifted edges or gaps in the metal at a valley or wall
- Sealant that has cracked, shrunk or pulled away from a joint
- Water marks on siding below where a roof meets a wall
- Damp attic insulation or dark tracks on wood at a dormer or valley
- Shingles that look fine but leaks that return after rain
- Metal that is bent, flattened or lifted by ice
Cost
How much does flashing repair cost in Washington?
No price is printed for flashing work. It depends on how much metal is involved and how hard it is to reach. These factors move the quote.
| Job | Typical range | What it includes |
|---|---|---|
| Number of joints | Counted at inspection | One vent is a small job; a roof with many dormers and valleys is larger |
| Reseal or replace | Decided on site | Replacement takes longer than resealing but usually lasts |
| Access and height | Measured on site | Steep pitch and second-storey walls need more equipment |
| Shingles around the joint | Judged on site | They often have to be lifted and may not reseat |
| Hidden damage | Found when opened | Soft decking or wet framing is repaired separately |
Your exact price is confirmed on site before any work starts.
Options
Types and options for flashing repair
Wall and dormer flashing
Step flashing along walls and dormers, and kickout flashing at the bottom of a wall, which sends water into the gutter. A missing kickout can soak a wall unseen.
Vent and pipe flashing
Boots and collars around pipes and vents, with rubber that cracks in sun and cold. Chimneys have their own page: chimney flashing repair.
One call and it gets handled.
Most flashing repair calls are scheduled the same day when a technician is free, and you approve the price before any work starts.
Why is sealant alone a poor fix for failing flashing?
Sealant dries, shrinks and cracks as it cycles through heat and cold, and it only closes a gap for a while. Flashing works by overlapping layers that shed water, not by sealing. A joint that relies mainly on sealant is likely to leak again.
A bead of sealant over a rusted or badly lapped flashing can look finished and still leak a month later. The repair that lasts replaces the metal and lays it correctly.
Ask the roofer whether the plan is to replace the metal or to seal it, and why. Either answer should come with reasons, and with photographs.
What is kickout flashing and why does it matter?
Kickout flashing is a small angled piece at the bottom of a roof-to-wall joint that sends water into the gutter rather than down behind the siding. When it is missing, water runs behind the wall and can rot framing without any visible sign inside for years.
You can often spot the need for one by a streak or stain on the siding where the roof edge meets the wall. It is a small part with large consequences.
If you see staining on a wall below a roof edge, mention it when you call.
Do dormers and additions leak more than simple roofs?
They tend to, because each one adds joints and changes how water flows. A plain gable roof has few places for flashing to fail. A roof with several dormers, valleys and a chimney has many, and each depends on workmanship that may be decades old.
That does not mean a complex roof is a poor roof. It means the roofer will spend more of the visit on joints than on the open slopes.
Sound flashing at every junction is what lets a complicated roof last.
How do I check flashing from the ground?
Use binoculars on a dry day to look at the metal along chimneys, walls, valleys and vents for rust, gaps, lifted edges or sealant that has pulled away. Do not climb up. Note anything that looks different from the rest of the roof and tell the roofer.
Look from several positions, because the angle changes what you can see. Photographs taken at full zoom help the roofer plan the visit, and they let you compare against the same spot after a repair.
Inside, check ceilings and the tops of walls near these joints after each rain. A faint ring that grows is worth a call before it becomes a dark one.
What does flashing look like on an older house in Washington?
On older houses it is often a mix: copper or galvanised metal on the oldest parts, aluminium on later additions and sealant patches from different repairs. The mix itself is not a problem; what matters is whether each joint is lapped correctly and the metal is sound.
A roofer who reads that history can often tell you which joint was done in which era, and which has been repaired more than once. That helps explain why a particular corner keeps leaking.
Where original flashing is set into brick or stone, repairs sometimes involve a mason for the mortar as well as a roofer for the metal. Ask who is responsible for each part.
Our process
How our flashing repair visit works
Trace the leak to the joint
The roofer starts from the stain inside and works up and across the roof to find the junction responsible. Photographs of the damaged metal help you see what failed.
Decide between a reseal and a rebuild
A small gap may be sealed, but sealant alone is rarely a lasting fix. If the metal is rusted, flattened or wrongly installed, it should be replaced.
Remove the old flashing and any damaged shingles
Shingles beside the joint are lifted so the roofer can see the deck and underlayment. Soft boards are replaced.
Install new flashing in layers
Step flashing goes in with each course of shingles, with counter flashing over it at walls and chimneys. Layers must overlap so water runs over the joint and not under it.
Seal, check and clean up
Sealant is used where it is appropriate, not as the main barrier. The roofer checks the work and sweeps the site.
Warren County
Why flashing repair is different in Warren County and the Delaware Valley
Freeze-thaw winters in Warren County, with roughly 30 to 40 inches of snow a year, lift and loosen flashing and sealant at joints, so repairs often come after the spring thaw reveals what winter did.
Buildings in older town centres such as Washington Borough and Hackettstown often have roofs that meet taller walls, and counter flashing set into brick or stone needs the mortar around it to be sound.
The roofer you reach should tell you their New Jersey home improvement contractor registration number on request. It begins with 13VH, and you can check it with the Division of Consumer Affairs.
Downtown buildings in Washington Borough were rebuilt in places after a large fire in 1962, so rooflines and wall joints from several periods can sit side by side on the same block.
Where we work
Flashing Repair across Warren County
- Flashing in Washington
- Flashing in Changewater
- Flashing in Broadway
- Flashing in Oxford
- Flashing in Port Murray
- Flashing in Asbury
- Flashing in Glen Gardner
- Flashing in Hampton
- Flashing in Belvidere
- Flashing in Buttzville
- Flashing in Great Meadows
- Flashing in Stewartsville
- Flashing in High Bridge
- Flashing in Vienna
- Flashing in Phillipsburg
- Flashing in Clinton
- Flashing in Bloomsbury
- Flashing in Califon
- Flashing in Martins Creek
- Flashing in Schooleys Mountain
- Flashing in Delaware
- Flashing in Hackettstown
- Flashing in Annandale
- Flashing in Long Valley
- Flashing in Ackermanville
- Flashing in Pittstown
- Flashing in Hope
- Flashing in Lebanon
- Flashing in Bangor
- Flashing in Easton
Not sure if you're covered? Check your ZIP code.
Related
Related services
Chimney Flashing Repair
Why chimneys leak at the roof line on Warren County houses, and what a roofer does about flashing, saddles and mortar joints.
Roof Leak Repair
How leaks are traced on Warren County roofs, what to do inside the house while you wait, and what the repair usually involves.
Roof Repair
Targeted repairs to valleys, chimney joints, vents and loose shingles on Warren County homes, without a replacement you do not need.
FAQ
Flashing Repair FAQs
How do I know if my flashing is the problem?
Stains near a chimney, wall, valley or dormer are the clue, along with rust or gaps visible from the ground. The roofer confirms it up close.
Can flashing be fixed without replacing shingles?
Sometimes, but shingles near the joint often need to be lifted and some may not reseat. The roofer explains what is likely for your roof.
Is sealant ever enough?
For a small gap in otherwise sound metal, sometimes. It is rarely a lasting fix on its own.
Is flashing repair covered by insurance?
Usually only when caused by a covered event such as a storm. Wear and age are treated differently. Ask your insurer.
Are leaks at flashing urgent?
If water is entering, protect the inside and call. See roof leak repair for what to do while you wait.