Flashing is the metal at valleys, walls and roof edges that sheds water; when it fails, leaks start at the joins.
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Roof flashing is thin metal, usually galvanized steel, aluminum or copper, that carries water over the joints where a roof meets a wall, a dormer, a valley or an edge. Repair means resealing or replacing the failed piece. Warwick Roofing connects callers across Kent County and the nearby bay towns with an independent local roofer.
Shingles do the broad work of shedding water, but the places where one roof plane meets another surface are where a roof is most likely to leak. A valley between two slopes, the lower edge of a dormer wall, the line where a porch roof meets the house: each one relies on a strip of metal tucked under the roofing on one side and over it on the other.
Rhode Island houses give that metal plenty to do. The median home in Warwick was built in 1960, over a fifth of the city's homes predate the 1940s, and the older roofs in the villages, in Cranston's Edgewood and in the colonial towns along the bay carry gables, dormers, porches and chimneys, each with its own joins to keep tight.
If you can see a stain on the wall below a roof edge, or a ceiling spot that grows in a steady rain and not in a dry spell, flashing is a likely place to look. Call (833) 751-2102 and describe where the water shows. You are put through to an independent local roofer who can trace it, and the visit happens when a crew is free.
Sealant can slow a small leak for a while, but flashing works by overlap, not by glue. A bead of sealant over failed or badly laid metal usually cracks and lets the water back in. A roofer will often replace or re-lay the metal and treat sealant as a finishing touch.
Sealants stay flexible only for so long, and a roof moves a little through every freeze and thaw. A thick smear of old roof cement along a join tells a roofer that someone chased a leak before, and it often hides the real entry point. It is also messy to work around, so removing it can be part of the repair.
A quick sealant touch-up is sometimes a reasonable stopgap for a hairline gap on sound metal until a roofer can come. Ask the roofer whether sealing makes sense on your join or whether the metal needs to come out.
Older roofs have more joins, and each join is a place for water to get in. Metal wears, sealant dries out, and freeze-thaw cycles work gaps open over the years. Multi-gabled houses, dormers and additions give the weather the most places to find a weak spot.
Think about what a Victorian-era house is made of: porches, bays, dormers, tall chimneys and a roofline that steps up and down. Cranston's Edgewood Historic District holds mostly homes built between 1880 and 1962, and many have this kind of complicated roof. Each change in the roof plane needs metal, and every piece is a place that can fail.
Houses that have been re-roofed several times add another wrinkle. If new shingles went over old ones, the flashing may have been left in place from an earlier layer, or tucked in at the wrong depth, and that sets up a leak that looks like a new problem.
Leaks from flashing usually show up near a join, at a wall, valley or dormer, and often only in wind-driven rain or during a thaw. A leak from worn shingles tends to appear across an open slope. A roofer traces from the stain upslope to find which one it is.
A useful clue is where and when the stain appears. A mark on the ceiling just inside the wall of a dormer, which grows in an easterly storm, points at the metal there. A stain well away from any join and in the middle of a slope points at the shingles themselves, which is a job for roof repair or, if the slope is worn out, a replacement.
Do not climb up to look. Photos from the yard with a zoom, and a note of which room the stain is in, are enough for a roofer to plan the visit.
It can be. Roofs on waterfront streets in Barrington, Warren, Bristol and Jamestown sit in salt air and bay wind, and some metals and fasteners hold up better there than others. It is worth asking a roofer what metal and fasteners they plan to use before you agree to the work.
Corrosion-resistant fasteners and flashing are worth asking about on any shoreline roof. A roofer who works those towns will have a view on which metals suit the exposure, and may point out that a mismatch of two different metals touching can speed corrosion.
Away from the water, the main wear on flashing is freeze and thaw, and a roof that sits under tall trees collects leaf litter in its valleys, which keeps them wet.
Do not go onto the roof to chase a leak or to smear sealant along a join. Wet shingles, steep slopes and old, brittle roofing make footing unreliable, and a fall is a worse outcome than a stain. Take photos from the ground and let a roofer who has the right equipment look at the metal.
The roofer starts inside, at the stain, and works up and along the roof to where water could be getting in. Water travels along rafters before it drips, so the entry point is often a foot or more away from the spot you see on the ceiling.
Every wall join, valley, dormer and penetration is looked at for lifted metal, rust, gaps and old patches. The roofer notes whether the metal is sound and only the seal has failed, or whether the metal itself is bent, corroded or poorly laid.
To reach flashing that is tucked under shingles or siding, the roofer lifts the covering around the join. Good flashing is woven into the roofing, each piece overlapping the next like scales, so a sound repair usually means undoing some of that layering.
Damaged pieces are replaced with new metal cut to fit, and sound pieces are re-set. A bead of sealant is a finishing step on a joint that is mechanically right, not a substitute for flashing that has been laid wrong or has worn through.
Shingles or siding are put back over the new metal, and the roofer checks the gutter, trim and fascia nearby for damage from water that has been getting past. Any wet decking found along the way is flagged and quoted separately.
Where a roof runs into a vertical wall, small L-shaped pieces step up the join, one under each shingle course, and a second piece set into or over the wall covers the top edge. This is the standard fix on dormers, porch roofs and additions, and it is where older houses with many roof planes spend the most time being repaired.
A valley is the trough where two slopes meet and it carries the roof's heaviest flow of water, plus leaves and slush. Metal laid down the centre protects the deck, and the shingles on either side are trimmed to leave a clean channel. A worn or poorly laid valley is a regular source of ceiling stains in older, multi-gabled houses.
Along the eaves and rakes, a bent strip of metal guides water off the roof edge and into the gutter, instead of letting it creep back under the shingles to the fascia board. Where it is missing or rusted through, the wood behind it tends to rot first. Chimneys and skylights have their own flashing systems; see chimney flashing repair and skylight leak repair.
Published guides do not give a reliable price for flashing repair on its own, so no figure is quoted here. A few things you can describe on the phone move the quote.
| Job | Typical range | What it includes |
|---|---|---|
| How many joins are involved | Quoted on site | One valley or one dormer wall costs less than every join on a multi-gabled roof |
| Metal used and how it is laid | Quoted on site | Galvanized steel, aluminum and copper differ in cost and in how they age |
| Roof height, pitch and access | Quoted on site | Steep slopes, tall walls and tight lots take more setup |
| Water damage found underneath | Quoted separately | Wet sheathing, rotted trim or damaged siding is added once it is opened up |
These items show what moves the price, not a price list. Your exact price is confirmed on site before any work starts.
Most flashing repair calls are scheduled the same day when a technician is free, and you approve the price before any work starts.
Warwick gets roughly 48 to 49 inches of precipitation a year, with about 32 to 37 inches of snow, and the cold season runs about 3.3 months from early December to mid-March. Water at a join freezes at night and thaws in the day through that stretch, so a small gap that stays dry in a summer shower can open up over the winter. That is why a lot of flashing leaks are noticed in March, when the snow melts.
Snow and ice make flashing work harder. An ice dam pushes meltwater up under the shingles at the roof edge, and flashing at an eave or a wall join is the first thing it reaches. If the pattern looks like ice damming, the fix for the roof also involves heat loss and ventilation in the attic; see ice dam removal and prevention.
In Newport, East Greenwich, Pawtuxet Village, Apponaug and other historic districts, a change to roofing materials may need approval before work starts, and a repair to existing flashing in a like-for-like way is a different question from a change of material. Ask the roofer and the local commission before you order metal that differs from what is there.
Where a brick chimney passes through the roof, metal flashing and mortar have to stay tight; here is how a roofer fixes a leak.
Tracing and fixing roof leaks in Warwick-area homes, through an independent local roofer you reach with one call.
Targeted repairs to valleys, dormers, shingles and roof edges, done by an independent local roofer reached through one call.
Finding why a skylight drips, from flashing and seals to condensation, and fixing the leak at its source.
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A triple-decker has one roof over three households, and the low-slope or flat sections common on these houses leak at seams, flashing and drains.
Shingles cover the open slopes of the roof and shed water over their surface. Flashing is the metal at the joins and edges where shingles alone cannot seal the gap. The two work as a system, with each piece overlapping the next, so a failure of either one can let water in.
Often, yes. A re-roof exposes old flashing, and a roofer may replace it so the new shingles are tied into new metal. Whether yours can be reused depends on its condition and how it was laid, and the roofer should tell you which pieces are being replaced and why.
Wind drives rain sideways and up under edges that shed ordinary rain, so a gap at a wall join or a valley that stays dry in a light shower can leak in a storm. That pattern is a hint that the leak is at flashing, not across the open shingles.
Yes. Water running down behind siding or trim can soak sheathing and framing without ever showing on the ceiling, so a stain on the exterior or a soft patch of trim is worth reporting. The roofer may open up the area to see how far the water has gone.
It depends on the house, the budget and the exposure. Galvanized steel, aluminum and copper all work and they age differently, and mixing different metals together can speed corrosion. Ask the roofer what suits your roof and why, and whether the choice affects the quote.
It should. An inspection looks at valleys, walls, dormers and edges as well as the open slopes. If you are buying or selling, see roof inspection for what a roofer looks at and what you get back.