Valley flashing
Where two slopes meet, a metal or woven shingle valley carries the most water on the roof. Metal valleys last well but can rust, and woven valleys can trap debris.
Urgent? Call to reach a local roofer
Roof Flashing Repair in Schaumburg: Valleys, Dormers and Wall Joints
Repairing valley, step, apron and wall flashing where the roof meets something else, on older Glen Ellyn, Palatine and Arlington Heights houses.
- Roof repair and full replacement
- Ice dams, hail 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 Repair
Roof Flashing Repair: what it covers
Quick answer
Flashing is the metal that sheds water at every place the roof meets a wall, a valley, a dormer or a pipe, and it is where most roof leaks begin. Schaumburg Roofing connects you with an independent local roofer who finds the failed joint, renews or re-laps the flashing and quotes the repair in writing, not just a bead of sealant.
Shingles do the easy work. Across an open slope they overlap like fish scales and water runs down them without effort. The hard work is at the junctions, where the slope ends at a wall, two slopes meet in a valley, a dormer cheek rises from the plane or a pipe pokes through. At each, the flashing has to catch water that the shingles cannot and lead it back onto the roof. When flashing fails, it usually fails quietly, and the first sign is a stain on a ceiling.
Older houses in Glen Ellyn, Palatine, Arlington Heights and Mount Prospect carry the most of it. Pre-war and postwar houses there were built with dormers, gables and additions, each adding a wall-to-roof joint and a valley. Decades of freeze-thaw movement open sealant, rust fasteners and lift the edges of metal. A leak that seems to come from the middle of a room often traces to a joint three feet away.
Schaumburg Roofing is a call line that puts you through to an independent local roofer. The roofer inspects each junction, names the one that failed and explains the repair. Call (833) 751-2102, say where inside the house water appears and whether a dormer, a chimney or an addition sits above it.
- Service area
- Schaumburg & Cook County
- Availability
- Call to reach a local roofer, emergencies first
- Phone
- (833) 751-2102
Why is sealant not a lasting fix for flashing?
Sealant is a flexible bead that dries, cracks and pulls away as the roof expands and contracts through freeze-thaw cycles. It can hold for a season or two, but it hides rather than fixes a flashing problem. A durable repair relies on layered metal, with sealant only as a backup.
The pattern is familiar: a roofer or owner caulks a joint, the stain stops, and the same stain returns a few winters later. The caulk has failed, and the metal underneath was never right.
Ask the roofer what will be done with metal, not just with sealant, and ask them to show the failed flashing before and after.
Which flashing details leak most on older houses?
Wall-to-roof joints at dormers and additions, valleys, and the points where a lower roof meets an upper wall. These intersections multiplied when owners added dormers and family rooms. Each one is a joint that must be built correctly and maintained, and each is a place where decades of movement show up.
A kickout piece at the bottom of a roof-to-wall joint sends water into the gutter rather than behind the siding. When it is missing, the wall below can rot while the roof looks fine.
Houses with pre-war cores and later additions in Glen Ellyn and Arlington Heights often combine several eras of flashing on one roof.
How does a roofer tell if flashing was never installed correctly?
The metal pieces should overlap in the direction water flows, each higher piece laid over the next one down, with no reliance on sealant to carry the water. Flashing that is flat against the wall without a counterflashing or siding cover, or that is face-nailed through the visible surface, was not installed to shed water properly.
Roofers see the same installation shortcuts repeatedly: step flashing replaced by a continuous strip, a wall joint caulked in place of a metal piece, valley metal cut short of the eave. These can hold for years and then fail in one hard winter.
Ask the roofer to show you the old flashing when it comes off. Seeing a rusted, undersized or missing piece makes the repair easy to understand, and it tells you whether neighboring joints are likely to fail next.
How can a flashing leak harm the house if it seems minor?
Water entering at a joint can run down inside a wall, soak insulation and rot the framing without ever dripping on a ceiling. By the time a stain shows, the damage behind the wall may be older and larger. Fixing flashing early is cheaper than repairing what it protects.
Check the interior wall below a roof-to-wall joint for soft paint, bubbling or a musty smell. These can show water movement before any ceiling stain appears.
If rot is found, the carpenter's work is separate from the roofer's, and both should be coordinated.
When does flashing repair become part of a larger job?
When the surrounding shingles are near the end of their life, or when the flashing is so widespread that a repair would disturb more roof than it fixes. In that case, redoing the flashing during a reroof is more practical and better detailed. The roofer should explain why.
A full replacement is the best time to renew all flashing at once, so that new shingles are not tied into old metal. The roof replacement page describes how that works.
Warning signs
Signs you need roof flashing repair
Do not climb to a dormer or valley to dab sealant on a leak. These are the steepest, wettest parts of a roof, and wet metal is slick. Photograph the stain, note when it appears and call.
- A ceiling stain near a dormer, an exterior wall or a roof valley
- Streaks or rust trails below a wall where the roof meets it
- Sealant that is cracked, split or pulled away from a flashing edge
- Metal that is bent, lifted, rusted through or missing sections
- Wet or darkened siding or trim where a roof runs into a wall
- Shingles that look dark and wet at a valley long after rain has stopped
- Peeling paint on the exterior wall just above the roofline
Our process
How our roof flashing repair visit works
Trace the water to a junction
The roofer starts at the stain, checks the attic and then inspects each wall, valley and penetration upslope. Many leaks have a single failed joint.
Expose the flashing
Shingles or siding at the edge are lifted so the flashing can be seen in full. Surface sealant often hides a failed joint beneath.
Decide whether to re-lap or replace
Metal in good condition can sometimes be re-lapped and resealed. Rusted, bent or incorrectly installed flashing is replaced with new pieces.
Install properly layered flashing
New flashing is layered so that water always runs over the next piece, with step pieces woven into the shingle courses and counterflashing set into the wall.
Reseal the surrounding area
Shingles are replaced, siding refitted and exposed edges sealed. The roofer checks the repair after rain or with a water test.
Options
Types and options for roof flashing repair
Step and wall flashing
Small steps of metal, one per shingle course, run up a wall and are covered by siding. Failure usually comes from missing pieces, rust or sealant used in place of metal.
Penetration and chimney flashing
Pipes, vents and chimneys each need their own flashing detail. The chimney flashing repair page covers masonry, which has its own details.
Cost
How much does roof flashing repair cost in Schaumburg?
A flashing repair is a small job when one joint failed and a larger one when a whole run of metal is gone. No figures are printed here.
| Job | Typical range | What it includes |
|---|---|---|
| Length and number of junctions | Counted on site | A single vent pipe is a small repair; a long wall joint or several dormers is far more |
| Access to the joint | Judged at the visit | Siding, trim and shingles may have to be removed and replaced to reach the flashing |
| Metal and finish | Set by material | Aluminum, galvanized steel and copper differ in cost and in how long they last |
| Hidden water damage | Found when opened | Wet or rotted sheathing around the joint is replaced as found |
| Height and roof pitch | Seen on site | Two-story walls and steep slopes require more safety equipment |
Your exact price is set by the roofer after inspection and confirmed in writing before any work starts.
One call and it gets handled.
Most roof flashing repair calls are scheduled the same day when a technician is free, and you approve the price before any work starts.
Cook County
Why roof flashing repair is different in Northwest Chicago suburbs
The older parts of this region, around downtown Glen Ellyn, Palatine, Arlington Heights, Mount Prospect and Roselle, include houses with steep gables, dormers and brick, all of which create more junctions than a plain ranch roof. A flashing visit there may involve more than one joint.
Postwar split-levels in the Schaumburg area often have a lower roof meeting an upper wall, a detail that depends on kickout flashing and tight step pieces. It is one of the first places a roofer looks when a ceiling stain appears under the intersection.
Additions made over the decades often combined different flashing methods in one roof. A single leak may be one joint of a long run, and the roofer should say whether the rest of the run is sound or whether the same fault repeats along it.
Related
Related services
Chimney Flashing and Repair
Renewing step flashing, counterflashing and crickets around brick chimneys on older houses in Roselle, Itasca and Des Plaines.
Roof Leak Repair
Leak tracing and repair at chimneys, valleys, vents and eaves on Schaumburg-area roofs, with temporary cover discussed first when water is active.
Skylight Installation and Leak Repair
Tracing and fixing leaks around skylights in 1970s to 1990s roofs, and what to know before adding a new one.
Where we work
Roof Flashing Repair across Cook County
- Flashing Repair in Schaumburg
- Flashing Repair in Hoffman Estates
- Flashing Repair in Roselle
- Flashing Repair in Hanover Park
- Flashing Repair in Medinah
- Flashing Repair in Rolling Meadows
- Flashing Repair in Streamwood
- Flashing Repair in Itasca
- Flashing Repair in Elk Grove Village
- Flashing Repair in Palatine
- Flashing Repair in Arlington Heights
- Flashing Repair in Bartlett
- Flashing Repair in Mount Prospect
- Flashing Repair in Glendale Heights
- Flashing Repair in Addison
- Flashing Repair in Wood Dale
- Flashing Repair in Prospect Heights
- Flashing Repair in Bensenville
- Flashing Repair in Carol Stream
- Flashing Repair in Bloomingdale
- Flashing Repair in Des Plaines
- Flashing Repair in Wheeling
- Flashing Repair in Wayne
- Flashing Repair in Buffalo Grove
- Flashing Repair in Carpentersville
- Flashing Repair in Glen Ellyn
- Flashing Repair in South Elgin
Not sure if you're covered? Check your ZIP code.
FAQ
Roof Flashing Repair FAQs
Can flashing be fixed without replacing shingles?
Sometimes, if the shingles around it are flexible. Often a few courses must be lifted and replaced to expose the metal. Brittle shingles may need larger replacement.
What metal is best for flashing?
Aluminum, galvanized steel and copper are common. The best choice depends on the roof, the budget and the surrounding metals, since some combinations corrode. Ask the roofer to name the metal in the quote.
How do I know if the flashing is failing?
Look for staining below the joint, rust or lifted metal, and sealant that has cracked. A roofer can confirm by lifting adjacent shingles.
Is a flashing leak an emergency?
If water is entering the house, say so on the call; temporary cover may be discussed before the repair. If it is a small, occasional stain, a routine visit is usually sufficient.
Can I seal flashing myself?
It would mean working at a roof edge or wall, which is risky, and a bead of sealant often hides a problem. A roofer can fix it properly.
How long does flashing last?
It depends on the metal, the installation and the weather. Quality metal installed correctly can outlast the shingles around it, while sealant-dependent details fail much sooner.